Liquid detergents with an aryl boroic acid
CA 2109526 C · Owner: Thoen, Christiaan A.J.K. · Inventors: Panandiker, Rajan K.; Peterson, Dwight M.; Thompson, James E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Included is a liquid detergent composition comprising detersive surfactant proteolytic enzyme, a detergent-compatible second enzyme, and an aryl boronic acid of structure (I) where X is selected from C1-C6 alkyl substituted C1-C6 alkyl, aryl, substituted aryl hydroxyl, hydroxyl derivative, amine, C1-C6 alkylated amine amine derivative, halogen, nitro, thiol thiol, derivative, acid, acid salt, ester sulfonate or phosphonate; each Y is independently selected from hydrogen C1-C6 alkyl, substituted C1-C6 alkyl, aryl substituted aryl, hydroxyl, hydroxyl derivative halogen, amine, alkylated amine, amine derivative nitro, thiol, thiol derivative, aldehyde acid, ester, sulfonate or phosphonate; and …
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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 24, 1992 and granted January 20, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 24, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2014.
- 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.