Detergent compositions having suds suppressing properties
CA 2189751 C · Owner: The Procter & Gamble Company · Inventors: Hartshorn, Richard Timothy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A detergent composition for-, mulated with conventional detersive surfactants, optional builders, detergent adjuncts and a suds suppressor, wherein said suds suppressor is an amino acid of formula (I), or its al-, kali metal alkaline earth metal salt or mixtures thereof wherein R1 is an alkyl, aryl or alkaryl group containing from 1 to 14 carbon atoms R2 is an alkylene, arylene or alkarylene group containing from 1 to 14 carbon atoms R5 is H or an alkyl, aryl, or alkaryl group containing from 1 to 10 carbon atoms. The invention also relates to a detergent composition comprising a mixture of amidoacid and amidoperacid suds suppressors and to an aqueous wash liquor containing a detersive …
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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
- Filed April 18, 1995 and granted June 27, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 18, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 2017.
- 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.