Detergent compositions containing percarbonate and amylase
CA 2176697 C · Owner: The Procter & Gamble Company · Inventors: Moss, Michael Alan John; Thoen, Christiaan Arthur Jacques Kamiel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A granular detergent composition comprising an alkali metal percarbonate and an amylase enzyme characterized in that said, composition contains an amylase in a weight ratio of percabonate to amylase of 1:2 to 300:1 preferably 1:2 to 60:1, more preferably 20:1 to 40:1. Both laundry detergent compositions including laundry additives and automatic dishwashing compositions are encompassed by the term "detergent composition" herein. Methods of treatment of specific stains are also encompassed.
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 15, 1994 and granted January 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 15, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 2016.
- 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.