High breakdown voltage varistor
CA 1113191 A · Owner: General Electric Company · Inventors: Levinson, Lionel M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A metal oxide varistor with high breakdown electric field values, in excess of 1200 v.mm-1 is processed by, sintering a mixture which comprises zinc oxide with significant amounts of bismuth oxide, from approximately 10 mol percent to approximately 25 mol percent silicon dioxide, and other benefical metal oxide additives at temperatures between 800°C and 1100°C.
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
- Granted November 24, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 24, 1998.
- 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.