Functionally gradient material and its use in a semiconductor circuit substrate
CA 2232425 C · Owner: Honda Giken Kogyo Kabushiki Kaisha · Inventors: Kuwabara, Mitsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A functionally gradient member comprises in an, integrated manner, a ceramic part composition layer having desired insulation performance and thermal conductivity a, metal part composition layer having desired thermal conductivity and electric conductivity and a composite, composition layer disposed at a boundary portion between the ceramic part composition layer and the metal part composition layer and having its composition and physical properties which are gradually changed. Accordingly the, metal and the ceramic are integrated into one unit without providing any joining section to provide the functionally gradient member having high joining reliability and having high thermal …
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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 March 18, 1998 and granted June 18, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 18, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 18, 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.