Multi-layered ceramic elements and method for producing same
CA 2020367 A1 · Owner: Hagimura, Atsushi · Inventors: Nishihara, Kunio; Nakajima, Mutsuo; Hagimura, Atsushi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multi-layered ceramic element which comprises a plurality of films or thin plates of ceramic and a plurality of inner electrodes which are alternatively arranged in layers, wherein the ends of the inner electrodes are exposed at side end faces of the multi-layered assembly and only the exposed portions of the inner electrodes and the ceramic surface in the vicinity of the exposed portions of the electrodes are covered with an insulating layer which comprises a polyimide resin having repeating units represented by the following general formula (I): ( I ), wherein X represents a tetravalent group selected from the group consisting of tetravalent phenyl groups; tetravalent biphenyl groups; …
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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 July 4, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 4, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 4, 2012.
- 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.