Starch with curable amine functional silicone for fabric wrinkle reduction and shape retention
CA 2004162 C · Owner: The Procter & Gamble Company · Inventors: Coffindaffer, Timothy Woodrow
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid starch composition for treating laundered fabrics comprising:, (1) from about 0.1% to about 33% by weight of a curable amine functional silicone emulsion for wrinkle reduction and (2) from about 0.5% to about, 35 % of a laundry starch and (3) water to deposit said curable amine functional silicone and said starch on said fabric wherein said curable amine, functional silicone on said fabric cures to form silicone-oxygen-silicone linkages. The curable amine functional silicone is selected from the group of linear and branch curable amine functional branch silicones and mixtures thereof having the following structure: ((RO)R'2SiO1/2)X(R'2SiOV2/2)Y(R"SiO3/2)Z wherein X is equal to Z+2; …
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 November 29, 1989 and granted February 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 29, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 2011.
- 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.