WATER POLLUTION CONTROL CORP innovation strategy

Patent filings in countries

#	Country	Total Patents
#1	United States	21
#2	Canada	18
#3	Australia	2
#4	Denmark	1
#5	EPO (European Patent Office)	1
#6	United Kingdom	1
#7	Ireland	1
#8	WIPO (World Intellectual Property Organization)	1

#	Technology
#1	Climate change mitigation in wastewater treatment
#2	Water treatment
#3	Mixing
#4	Unspecified technologies
#5	Separation
#6	Pipes
#7	Building materials
#8	Unspecified technologies
#9	Climate change adaptation technologies

Publication	Filing date	Title
US5378355A	1992-12-04	Direct delivery in-situ diffuser cleaning
US5328601A	1989-10-12	Apparatus for in place gas cleaning of diffusion elements
US4889620A	1985-02-06	In place gas cleaning of diffusion elements
US4451373A	1981-10-19	Ring channel aeration apparatus and method
IE812259L	1981-09-29	Cleaning of diffusion elements of sewage aeration system
US4382867A	1980-11-04	In place gas cleaning of diffusion elements
CA1148673A	1980-07-31	Ring channel aeration apparatus and method
US4288395A	1980-04-15	Diffusion element with boundary zone treatment
CA1143368A	1980-02-12	Diffusion element with boundary zone
CA1152979A	1980-02-12	Gas diffusion apparatus
CA1140536A	1980-02-12	Diffusion element with boundary zone treatment
CA1143367A	1980-02-12	Diffusion element
CA1154754A	1980-02-12	Sewage aeration system
US4294696A	1980-01-25	Swing diffuser
US4288394A	1979-12-10	Sewage aeration system
US4261932A	1978-10-19	Diffusion element with boundary zone treatment
US4261933A	1978-10-19	Diffusion element
US4198299A	1977-05-09	Microscreen method and apparatus
US4012470A	1975-06-27	Sewage treatment aeration systems
US3953553A	1975-02-28	Sewage treatment aeration systems