Cleaning compositions with glycerol amides
CA 2131178 C · Owner: Scheibel, Jeffrey J. · Inventors: Mckillop, Kirsten L.; Watson, Randall A.; Scheibel, Jeffrey J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Detergent compositions containing N-(1,2 propanediol) fatty acid amide surfactants of the general type RC(O)NR1CH2CHOHCH2OH, especially where R1 is methyl or hydroxyethyl are useful surfactants in laundry detergents dishwashing liquids, shampoos, bar soaps and hard surface cleaners. The amide surfactants provide good cleaning even in the absence of LAS surfactants.
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 March 8, 1993 and granted February 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 8, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 2015.
- 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.