Organopolysiloxane composition for the formation of a cured release film
CA 2055981 A1 · Owner: Sasaki, Shosaku · Inventors: Sasaki, Shosaku; Hayashi, Masaushi; Hamada, Yuji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to the, introduction of an organopolysiloxane composition which cures to give a film that exhibits excellent release properties with respect to various types of tacky materials and in particular with respect to tacky silicone-based materials. The present invention further relates to an organopolysiloxane composition containing a trifluorochloroethylene resin which retains good curability and residual adhesion and has superior releasability.
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 21, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2013.
- 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.