Foam control composition and method for controlling foam in aqueous systems
CA 2404708 A1 · Owner: Walterick, Gerald C. Jr. · Inventors: Walterick, Gerald C. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to methods and compositions for controlling foam i.e. defoaming or inhibiting the formation thereof in aqueous systems including , wastewater systems and in aqueous industrial process systems by adding primary alcohol, alcohol alkoxylate, and emulsifier to the aqueous system such as in , a stable aqueous composition.
Read the whole patent
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
- Filed February 8, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 8, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.