Low phosphate or phosphate free laundry detergent
CA 1280663 C · Owner: Colgate-Palmolive · Inventors: Ouhadi, Trazollah; Dehan, Louis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A low polyphosphate or a polyphosphate free liquid heavy duty laundry detergent composition comprising a suspension of an alkali metal lower polycarboxylic acid builder salt in liquid nonionic surfactant. The laundry detergent composition comprises a nonaqueous liquid nonionic surfactant containing a stable suspension of an alkali metal lower polycarboxylic acid builder salt.
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 February 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 26, 2008.
- 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.