Varistor comprising aluminum salt
CA 1202429 A · Owner: Tokyo Shibaura Denki Kabushiki Kaisha · Inventors: Kanai, Hideyuki; Imai, Motomasa; Furukawa, Osamu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A varistor having good voltage-current nonlinear characteristics and a long life performance The varistor is formed of a sintered body consisting essentially of zinc oxide as a major component 0.1 to 5 mol%, of bismuth in terms of Bi2O3 0.1 to 5 mol% of cobalt in, terms of CO2O3 0.1 to 5 mol% of manganese in terms of MnO, 0.1 to 5 mol% of antimony in terms of Sb2O3 0.1 to, 5 mol% of nickel in terms of NiO and 0.001 to 0.05 mol%, of aluminum in terms of Al3+.
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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
- Granted March 25, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 25, 2003.
- 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
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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.