Silicone coating composition for film
CA 2069134 A1 · Owner: Seo, Choon-Sig · Inventors: Seo, Choon-Sig; Hong, Young-Gi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein is a novel silicone coating composition to be applied on a film, a film coated with the novel composition a process for preparing a film coated with the composition; and more specifically, to a silicone coated film capable of producing a color development by virtue of the presence of an effective amount of solvent-soluble dye in the coating composition.
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 May 21, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 21, 2014.
- 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.