Epoxy resin composition
CA 2121876 A1 · Owner: Yasuda, Kiyomi · Inventors: Nakamura, Hideo; Yasuda, Kiyomi; Suzuki, Terufumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An epoxy resin composition which exhibits a low dielectric constant and a low dielectric dissipation factor as well as an excellent working susceptibility after its curing is provided. The epoxy resin composition contains at least one member selected from a novolak resin (A) prepared by condensing formalin and an alkylphenol compound; and an epoxy resin (B) prepared by glycidylating said novolak resin (A) with an epihalohydrin.
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 April 21, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 21, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 2016.
- 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.