Polyfunctional cyanate resin composition and resin-encapsulated type semiconductor device
CA 2253099 A1 · Owner: Sumitomo Chemical Co. Ltd. · Inventors: Nakajima, Nobuyuki; Hayashi, Toshiaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provided is a polyfunctional cyanate resin composition comprising (A) a polyfundtional cyanate resin having a functional number of 2 or more or its prepolymer (B) an epoxy, resin having a softening point or melting point of 75°C or more and (C) a curing catalyst as indispensable components and a, resin-encapsulated type semiconductor device using the same which has a high heat resistant property a low coefficient of, thermal expansion and an excellent blocking resistance of a resin compound.
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 9, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 9, 2020.
- 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.