Sulfonamide peroxycarboxylic acids
CA 2098353 A1 · Owner: Akzo Nobel Nv · Inventors: Morris, Donald Eugene; Chou, Yueting
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed novel sulfonamide peroxycarboxylic acids of the structures and, wherein A and B are peroxycarboxylic compatible organic moieties and R is selected from the group consisting of hydrogen and alkyl radicals having from l to 3 carbon atoms. These compounds have shown utility as laundry bleach to remove stains from cloth and are stable for purposes of detergent formulation.
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 June 14, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 14, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 14, 2015.
- 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.