Nonionic surfactant-containing detergent composition with cellulose ether
CA 1080576 A · Owner: The Procter And Gamble Company · Inventors: Nicol, Charles H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Charles H. Nicol ABSTRACT OF THE DISCLOSURE, Cellulose ether soil release agents are used in detergent compositions containing a nonionic surfactant which has a critical micelle concentration of at least 50 ppm and a ratio of ethylene oxide units to number of carbon atoms in the hydrophobic chain of at least 0.4.
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
- Granted July 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 1, 1997.
- 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.