Detergent compositions containing calcium and polyhydroxy fatty acid amide
CA 2116955 C · Owner: The Procter & Gamble Company · Inventors: Ofosu-Asante, Kofi; Willman, Kenneth W.; Foley, Peter R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Detergent composition containing anionic sulfate surfactant polyhydroxy fatty acid amide, and calcium ions for improved greasy soil removal and skin mildness are described. Stable liquid detergent compositions compositions containing alkyl ethoxy sulfate lime soap dispersing agent, calcium ions magnesium ions, and D-methyl glucamide are preferred.
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 September 2, 1992 and granted June 23, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 2, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 2, 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.