Expired Canadian patentCanada
Dry cleaning fluid with curable amine functional silicone for fabric wrinkle reduction
CA 2004163 C · Owner: Trinh, Toan · Inventors: Williamson, Leonard; Coffindaffer, Timothy W.; Trinh, Toan
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to dry cleaning fluid compositions comprising curable amine functional silicones for wrinkle reduction and shape retention.
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 January 5, 1999. 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.
FiledNovember 29, 1989
GrantedJanuary 5, 1999
Term endedNovember 29, 2009
Patent numberCA 2004163 C
Classification (IPC)D06L1/04 +1 more
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.