Expired Canadian patentCanada
Detergent composition comprising cellulase enzyme and nonionic cellulose ether
CA 2206523 C · Owner: The Procter & Gamble Company · Inventors: Guedira, Nour-Eddine; Hall, Robin Gibson; Baillely, Gerard Marcel
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a detergent composition comprising at least 1 % of a surfactant system. Said system comprises a nonionic polysaccharide ether and a cellulolytic enzyme.
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 December 21, 1995 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 21, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 21, 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.
FiledDecember 21, 1995
GrantedJuly 24, 2001
Term endedDecember 21, 2015
Patent numberCA 2206523 C
Classification (IPC)C11D3/37 +2 more
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.