Detergent compositions containing cellulase compositions deficient in cbh i type components
CA 2093422 F · Owner: Clarkson, Kathleen A. · Inventors: Shoemaker, Sharon P.; Larenas, Edmund; Clarkson, Kathleen A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are cellulase compositions containing one or more endoglucanase components and less than about 5 weight percent of CBH I type components. When incorporated into detergent compositions and used in acidic, neutral or alkaline washing, media, such cellulase compositions impart rotor retention/restoration properties as well as improved softening properties to cotton-containing fabrics. Additionally such compositions impart reduced , strength loss to cotton-containing fabrics as compared to cellulase compositions containing greater amounts of CBH I type components.
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 October 4, 1991 and granted April 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 4, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 4, 2013.
- 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.