Ptc element and method of manufacturing the same
CA 2344532 A1 · Owner: Takahata, Okikuni · Inventors: Kataoka, Mitsuhiro; Takahata, Okikuni
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Conductors (13) are buried by pressing in a composition formed body (12) prepared by kneading 35-60 vol% of a conductive powdery filler with a crystalline polymer component in such a way that the conductors (13) are partly exposed from the surface of the composition formed body. Plating electrodes (14A, 14B) are formed by plating on the composition formed body (12). The conductive powdery filler contains at least one kind of TiC WC, W2C, ZrC, VC, NbC, TaC, and Mo2C. The adhesion between the PTC composition and the electrodes are good, and the contact resistance between them are low. Such a PTC device is excellent in stability against repeated current application.
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 July 14, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 14, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 14, 2022.
- 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.