Expired Canadian patentCanada
Control of biofouling in aqueous systems by non-polymeric quaternary ammonium polyhalides
CA 1319606 C · Owner: Gannon, James Edward · Inventors: Gannon, James Edward; Thornburgh, Scott
Overview
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Water soluble liquid quaternary ammonium polyhalides and quaternary ammonium polyhalides in water soluble admixture with surfactants, and their use in the control of biofouling in aqueous systems.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted June 29, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 29, 2010.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 4, 1987
GrantedJune 29, 1993
Term endedJune 29, 2010
Patent numberCA 1319606 C
Classification (IPC)C02F1/50
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.