PATENTS RELATED TO WASTEWATER

Although it is not necessary for a patent agent to have personal experience with the specific subject matter, it has its advantages. Dr. Demchick's experience includes laboratory experience involving wastewater. Dr. Demchick enjoyed lecturing about wastewater treatment and issues in many of the classes he taught.

Dr. Demchick is a scientist with a quarter of a century of research experience in academic, industrial and governmental settings.

If you are considering patent protection for an invention, Dr. Demchick will be glad to discuss the matter with you. There is no charge for an initial discussion.

The following sampling is to give you some sense of the types of wastewater related inventions which have received United States patent protection. The patent list is not exhaustive and is certainly not a substitute for a proper patent search . It should be noted that only U.S. Patents are included.

It should be noted that spelling, form and typographical errors in the original patents are preserved here.

Wastewater treatment (United States Patent 7,153,423)

Wastewater fluid level sensing and control system (United States Patent 7,151,459)

Method for reducing hydrogen sulfide emissions from wastewater (United States Patent 7,147,783)

Process for reducing sludge derived from the treatment of wastewater by oxygenation and mechanical action (United States Patent 7,147,780)

Passive treatment of wastewater and contaminated groundwater (United States Patent 7,147,779)

Method and system for nitrifying and denitrifying wastewater (United States Patent 7,147,778)

Wastewater treatment system with membrane separators and provision for storm flow conditions (United States Patent 7,147,777)

Oxidation reduction potential (ORP) based wastewater treatment process (United States Patent 7,141,175)

Layered sheet construction for wastewater treatment (United States Patent 7,140,495)

Apparatus for reducing nitrate demands in the reduction of dissolved and/or atmospheric sulfides in wastewater (United States Patent 7,138,049)

Apparatus and method for the removal of solids and floatables from a wastewater stream (United States Patent 7,138,048)

Process for recovery of nutrients from wastewater (United States Patent 7,135,116)

Denitrification system for nitrified wastewater or nitrified water (United States Patent 7,135,110)

Process and system for enhanced nitrogen removal in a wetland and recirculating sand filter wastewater treatment system (United States Patent 7,128,839)

Wastewater ballast system and method (United States Patent 7,128,009)

Nucleic acid fragments for the identification of bacteria in industrial wastewater bioreactors (United States Patent 7,125,981)

Nucleic acid fragments for the identification of bacteria in industrial wastewater bioreactors (United States Patent 7,125,980)

Process for removal of polycyclic aromatic hydrocarbons in wastewater and other contaminated sites (United States Patent 7,118,906)

Membrane supported bioreactor for municipal and industrial wastewater treatment (United States Patent 7,118,672)

Wastewater treatment and dispersal system (United States Patent 7,118,669)

Marine vessel onboard wastewater treatment system (United States Patent 7,108,782)

Method for the removal of heavy metals from acidic wastewater and chemical solutions (United States Patent 7,105,094)

Sewage treatment process by activated-sludge method comprising line atomizing treatment (United States Patent 7,105,092)

Soil covered environmentally affirmative household sewage treatment system (United States Patent 7,101,476)

Coconut mesocarp-based biofilter material and its use in a wastewater treatment system (United States Patent 7,097,768)

Dairy wastewater treatment (United States Patent 7,097,736)

Nucleic acid fragments for the identification of bacteria in industrial wastewater bioreactors (United States Patent 7,094,893)

Methods for reducing nitrate demands in the reduction of dissolved and/or atmospheric sulfides in wastewater (United States Patent 7,087,172)

Method for selective recovery and dewatering sewage sludge by using sludge-coal-oil co-agglomeration (United States Patent 7,087,171)

Method and system for treating wastewater containing organic compounds (United States Patent 7,087,170)

Combined tidal vertical flow and horizontal flow wastewater treatment system and method (United States Patent 7,087,169)

Polymeric compositions for dewatering sewage sludges (United States Patent 7,084,205)

Compact surface mounted on-site wastewater treatment unit (United States Patent 7,081,203)

Method for treating ETA-containing wastewater (United States Patent 7,081,194)

Packaged wastewater treatment unit (United States Patent 7,077,959)

Sewage treatment plant (United States Patent 7,077,958)

Aerobic wastewater treatment system (United States Patent 7,077,952)

Wastewater fluid level sensing and control system (United States Patent 7,075,443)

Use of pre-sorted plastic material wastes and process for producing a granular material as a filter for the purification of sewage (United States Patent 7,074,356)

Device and process for vertically extracting diffusers from a wastewater treatment tank (United States Patent 7,069,655)

Wastewater treatment bioreactor (United States Patent 7,063,786)

Method and apparatus for the treatment of wastewater (United States Patent 7,060,186)

Sewage treatment apparatus using self-granulated activated sludge and sewage treatment method thereof (United States Patent 7,060,185)

Wastewater ballast system and method (United States Patent 7,059,261)

Apparatus and method for processing of animal manure wastewater (United States Patent 7,056,441)

Flood and drain wastewater treatment system and associated methods (United States Patent 7,056,438)

Apparatus for the removal of heavy metals from acidic wastewater and chemical solutions (United States Patent 7,048,854)

Method and apparatus for treating water or wastewater to reduce organic and hardness contamination (United States Patent 7,048,852)

Treatment of swine wastewater by biological and membrane separation technologies (United States Patent 7,045,063)

Method and apparatus for enhancing wastewater treatment in lagoons (United States Patent 7,041,219)

Sewage effluent distribution means (United States Patent 7,040,840)

Methods for water and wastewater sludge treatment using floc or network strength (United States Patent 7,037,433)

Municipal wastewater treatment apparatus and process with a continuous feed and cyclic aeration (United States Patent 7,033,503)

Integrated tidal wastewater treatment system and method (United States Patent 7,029,586)

Process and apparatus for manufacture of fertilizer products from manure and sewage (United States Patent 7,024,796)

Reduction of wastewater in phosphate manufacturing (United States Patent 7,022,242)

Aerobic wastewater management system, apparatus, and method (United States Patent 7,022,237)

Wastewater biological treatment system and method therefor (United States Patent 7,022,235)

Biologically active reactor system and method for treating wastewater (United States Patent 7,022,233)

Anaerobic bioreactor for the wastewater-treatment plant (United States Patent 7,022,226)

In-pipe wastewater treatment system (United States Patent 7,022,222)

Aerobic wastewater management system, apparatus, and method (United States Patent 7,018,536)

Wastewater treatment control system (United States Patent 7,014,777)

Method for reducing nitrate concentration in wastewater (United States Patent 7,014,769)

Recreational vehicle attachment to secure a sewage discharge hose (United States Patent 7,013,922)

Process for recycling mixed liquor with dual-use jet recirculation pumps to provide highly efficient wastewater treatment (United States Patent 7,011,757)

Wastewater separator and method of using same (United States Patent 7,011,752)

Single vessel multi-zone wastewater bio-treatment system (United States Patent 7,008,538)

Apparatus for oxygenating wastewater (United States Patent 7,008,535)

Residual wastewater chlorine concentration control using a dynamic weir (United States Patent 7,005,073)

Apparatus and method for aeration of wastewater (United States Patent 7,005,069)

Method and apparatus for treating animal waste and wastewater (United States Patent 7,005,068)

Wastewater treatment system having aeration dropline-supporting clips (United States Patent 7,005,065)

Method and apparatus for remediating wastewater holding areas and the like (United States Patent 7,005,064)

Essentially insoluble heavy metal sulfide slurry for wastewater treatment (United States Patent 7,001,583)

Process for removing phosphorus from wastewater utilizing a triple basin wastewater treatment system (United States Patent 7,001,516)

Selective fluoride and ammonia removal by chromatographic separation of wastewater (United States Patent 6,998,054)

Wastewater source control system (United States Patent 6,997,201)

Process for production of biopolymers from nitrogen deficient wastewater (United States Patent 6,987,011)

Wastewater treatment (United States Patent 6,984,324)

System for the treatment of wastewater (United States Patent 6,979,398)

Wastewater treatment station in shipping-container (United States Patent 6,977,038)

Wastewater treatment apparatus including dosing and recirculation chambers within a single tank (United States Patent 6,974,536)

Cells and electrodes for electrocoagulation treatment of wastewater (United States Patent 6,972,077)

Sewage sludge treatment (United States Patent 6,966,941)

Bioreactor processing of wastewater (United States Patent 6,964,738)

Systems for water and wastewater sludge treatment using floc or network strength (United States Patent 6,964,737)

Wastewater treatment (United States Patent 6,960,304)

Leachate and wastewater remediation system (United States Patent 6,960,301)

Wastewater trickle tower with curtain(s) (United States Patent 6,955,275)

Methods and systems for improved dosing of a chemical treatment, such as chlorine dioxide, into a fluid stream, such as a wastewater stream (United States Patent 6,949,196)

Packaged wastewater treatment unit (United States Patent 6,949,191)

Wastewater treatment apparatus and system (United States Patent 6,949,187)

Method for biological cleaning of wastewater (United States Patent 6,946,074)

Method for treating wastewater in a membrane bioreactor to produce a low phosphorus effluent (United States Patent 6,946,073)

Method for treating soybean refinery wastewater (United States Patent 6,942,809)

Growth media wastewater treatment reactor (United States Patent 6,942,788)

Wastewater treatment (United States Patent 7,153,423)

Wastewater fluid level sensing and control system (United States Patent 7,151,459)

Method for reducing hydrogen sulfide emissions from wastewater (United States Patent 7,147,783)

Process for reducing sludge derived from the treatment of wastewater by oxygenation and mechanical action (United States Patent 7,147,780)

Passive treatment of wastewater and contaminated groundwater (United States Patent 7,147,779)

Method and system for nitrifying and denitrifying wastewater (United States Patent 7,147,778)

Wastewater treatment system with membrane separators and provision for storm flow conditions (United States Patent 7,147,777)

Oxidation reduction potential (ORP) based wastewater treatment process (United States Patent 7,141,175)

Layered sheet construction for wastewater treatment (United States Patent 7,140,495)

Apparatus for reducing nitrate demands in the reduction of dissolved and/or atmospheric sulfides in wastewater (United States Patent 7,138,049)

Apparatus and method for the removal of solids and floatables from a wastewater stream (United States Patent 7,138,048)

Process for recovery of nutrients from wastewater (United States Patent 7,135,116)

Denitrification system for nitrified wastewater or nitrified water (United States Patent 7,135,110)

Process and system for enhanced nitrogen removal in a wetland and recirculating sand filter wastewater treatment system (United States Patent 7,128,839)

Wastewater ballast system and method (United States Patent 7,128,009)

Nucleic acid fragments for the identification of bacteria in industrial wastewater bioreactors (United States Patent 7,125,981)

Nucleic acid fragments for the identification of bacteria in industrial wastewater bioreactors (United States Patent 7,125,980)

Process for removal of polycyclic aromatic hydrocarbons in wastewater and other contaminated sites (United States Patent 7,118,906)

Membrane supported bioreactor for municipal and industrial wastewater treatment (United States Patent 7,118,672)

Wastewater treatment and dispersal system (United States Patent 7,118,669)

Marine vessel onboard wastewater treatment system (United States Patent 7,108,782)

Method for the removal of heavy metals from acidic wastewater and chemical solutions (United States Patent 7,105,094)

Sewage treatment process by activated-sludge method comprising line atomizing treatment (United States Patent 7,105,092)

Soil covered environmentally affirmative household sewage treatment system (United States Patent 7,101,476)

Coconut mesocarp-based biofilter material and its use in a wastewater treatment system (United States Patent 7,097,768)

Dairy wastewater treatment (United States Patent 7,097,736)

Nucleic acid fragments for the identification of bacteria in industrial wastewater bioreactors (United States Patent 7,094,893)

Methods for reducing nitrate demands in the reduction of dissolved and/or atmospheric sulfides in wastewater (United States Patent 7,087,172)

Method for selective recovery and dewatering sewage sludge by using sludge-coal-oil co-agglomeration (United States Patent 7,087,171)

Method and system for treating wastewater containing organic compounds (United States Patent 7,087,170)

Combined tidal vertical flow and horizontal flow wastewater treatment system and method (United States Patent 7,087,169)

Polymeric compositions for dewatering sewage sludges (United States Patent 7,084,205)

Compact surface mounted on-site wastewater treatment unit (United States Patent 7,081,203)

Method for treating ETA-containing wastewater (United States Patent 7,081,194)

Packaged wastewater treatment unit (United States Patent 7,077,959)

Sewage treatment plant (United States Patent 7,077,958)

Aerobic wastewater treatment system (United States Patent 7,077,952)

Wastewater fluid level sensing and control system (United States Patent 7,075,443)

Use of pre-sorted plastic material wastes and process for producing a granular material as a filter for the purification of sewage (United States Patent 7,074,356)

Device and process for vertically extracting diffusers from a wastewater treatment tank (United States Patent 7,069,655)

Wastewater treatment bioreactor (United States Patent 7,063,786)

Method and apparatus for the treatment of wastewater (United States Patent 7,060,186)

Sewage treatment apparatus using self-granulated activated sludge and sewage treatment method thereof (United States Patent 7,060,185)

Wastewater ballast system and method (United States Patent 7,059,261)

Apparatus and method for processing of animal manure wastewater (United States Patent 7,056,441)

Flood and drain wastewater treatment system and associated methods (United States Patent 7,056,438)

Apparatus for the removal of heavy metals from acidic wastewater and chemical solutions (United States Patent 7,048,854)

Method and apparatus for treating water or wastewater to reduce organic and hardness contamination (United States Patent 7,048,852)

Treatment of swine wastewater by biological and membrane separation technologies (United States Patent 7,045,063)

Method and apparatus for enhancing wastewater treatment in lagoons (United States Patent 7,041,219)

Sewage effluent distribution means (United States Patent 7,040,840)

Methods for water and wastewater sludge treatment using floc or network strength (United States Patent 7,037,433)

Municipal wastewater treatment apparatus and process with a continuous feed and cyclic aeration (United States Patent 7,033,503)

Integrated tidal wastewater treatment system and method (United States Patent 7,029,586)

Process and apparatus for manufacture of fertilizer products from manure and sewage (United States Patent 7,024,796)

Reduction of wastewater in phosphate manufacturing (United States Patent 7,022,242)

Aerobic wastewater management system, apparatus, and method (United States Patent 7,022,237)

Wastewater biological treatment system and method therefor (United States Patent 7,022,235)

Biologically active reactor system and method for treating wastewater (United States Patent 7,022,233)

Anaerobic bioreactor for the wastewater-treatment plant (United States Patent 7,022,226)

In-pipe wastewater treatment system (United States Patent 7,022,222)

Aerobic wastewater management system, apparatus, and method (United States Patent 7,018,536)

Wastewater treatment control system (United States Patent 7,014,777)

Method for reducing nitrate concentration in wastewater (United States Patent 7,014,769)

Recreational vehicle attachment to secure a sewage discharge hose (United States Patent 7,013,922)

Process for recycling mixed liquor with dual-use jet recirculation pumps to provide highly efficient wastewater treatment (United States Patent 7,011,757)

Wastewater separator and method of using same (United States Patent 7,011,752)

Single vessel multi-zone wastewater bio-treatment system (United States Patent 7,008,538)

Apparatus for oxygenating wastewater (United States Patent 7,008,535)

Residual wastewater chlorine concentration control using a dynamic weir (United States Patent 7,005,073)

Apparatus and method for aeration of wastewater (United States Patent 7,005,069)

Method and apparatus for treating animal waste and wastewater (United States Patent 7,005,068)

Wastewater treatment system having aeration dropline-supporting clips (United States Patent 7,005,065)

Method and apparatus for remediating wastewater holding areas and the like (United States Patent 7,005,064)

Essentially insoluble heavy metal sulfide slurry for wastewater treatment (United States Patent 7,001,583)

Process for removing phosphorus from wastewater utilizing a triple basin wastewater treatment system (United States Patent 7,001,516)

Selective fluoride and ammonia removal by chromatographic separation of wastewater (United States Patent 6,998,054)

Wastewater source control system (United States Patent 6,997,201)

Process for production of biopolymers from nitrogen deficient wastewater (United States Patent 6,987,011)

Wastewater treatment (United States Patent 6,984,324)

System for the treatment of wastewater (United States Patent 6,979,398)

Wastewater treatment station in shipping-container (United States Patent 6,977,038)

Wastewater treatment apparatus including dosing and recirculation chambers within a single tank (United States Patent 6,974,536)

Cells and electrodes for electrocoagulation treatment of wastewater (United States Patent 6,972,077)

Sewage sludge treatment (United States Patent 6,966,941)

Bioreactor processing of wastewater (United States Patent 6,964,738)

Systems for water and wastewater sludge treatment using floc or network strength (United States Patent 6,964,737)

Wastewater treatment (United States Patent 6,960,304)

Leachate and wastewater remediation system (United States Patent 6,960,301)

Wastewater trickle tower with curtain(s) (United States Patent 6,955,275)

Methods and systems for improved dosing of a chemical treatment, such as chlorine dioxide, into a fluid stream, such as a wastewater stream (United States Patent 6,949,196)

Packaged wastewater treatment unit (United States Patent 6,949,191)

Wastewater treatment apparatus and system (United States Patent 6,949,187)

Method for biological cleaning of wastewater (United States Patent 6,946,074)

Method for treating wastewater in a membrane bioreactor to produce a low phosphorus effluent (United States Patent 6,946,073)

Method for treating soybean refinery wastewater (United States Patent 6,942,809)

Growth media wastewater treatment reactor (United States Patent 6,942,788)

Wastewater treatment (United States Patent 7,153,423)

Wastewater fluid level sensing and control system (United States Patent 7,151,459)

Method for reducing hydrogen sulfide emissions from wastewater (United States Patent 7,147,783)

Process for reducing sludge derived from the treatment of wastewater by oxygenation and mechanical action (United States Patent 7,147,780)

Passive treatment of wastewater and contaminated groundwater (United States Patent 7,147,779)

Method and system for nitrifying and denitrifying wastewater (United States Patent 7,147,778)

Although his recognition as a registered patent agent permits him to represent others in all patent matters before the United States Patent and Trademark Office, Dr. Demchick limits his practice to patent matters involving inventions for which he is confident that his expertise will allow him to serve his client well. He will gladly discuss whether he is comfortable handling cases involving inventions in a particular field. He will err on the side of declining cases if he has uncertainty about his ability to do what is needed in the case. Dr. Demchick does not represent clients in court. However, he refers clients to a patent attorney who does represent others in court, if it appears likely that patent related representation in court is appropriate. Dr. Demchick prepares and files non-provisional (regular) patent applications and provisional patent applications. He prepares and files utility patent applications and design patent applications. He prepares and files U.S. patent applications and international patent applications under the Patent Cooperation Treaty (PCT). He prepares and files applications to enter the U.S. National Phase for inventions for which international patent applications (PCT) were already filed. One of the matters he discusses with each client or potential client is which type of application(s) best meets that client's needs. He usually does a patent search (patentability search) as part of the preparation of a patent application. He discusses the value of patent searching with each inventor before agreeing to prepare a patent application for that inventor.