Liquid dishwashing detergent compositions
CA 2179709 C · Owner: The Procter & Gamble Company · Inventors: Clarke, Joanna Margaret; Foley, Peter Robert; Fu, Yi-Chang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to liquid dishwashing detergent compositions comprising a co-surfactant selected from amine oxides betaines, branched alkyl carboxylates and non bridged polyhydroxy fatty acid amides. Said dishwashing composition further comprises a bridged polyhydroxy fatty acid amide for improved sudsing performance.
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 January 20, 1995 and granted July 13, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 20, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 20, 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.
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.