Expired Canadian patentCanada
Electrical devices containing silacyclopentene dielectric fluids
CA 1112440 A · Owner: Dow Corning Corporation · Inventors: Legrow, Gary E.; Brooks, William T.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Electrical devices such as transformers and capacitors containing certain silacyclopentenes as dielectric fluids are disclosed.
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 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 17, 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.
FiledMarch 31, 1978
GrantedNovember 17, 1981
Term endedNovember 17, 1998
Patent numberCA 1112440 A
Classification (IPC)H01B3/46
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.