Expired Canadian patentCanada
Rupture diaphragm for galvanic cell
CA 1209201 A · Owner: Union Carbide Corporation · Inventors: Beatty, Theodore R.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Galvanic cells possessing at least one rupture diaphragm assembly which is comprised of a thin film membrane secured over the pressure side of a venting aperture.
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 August 5, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 5, 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.
FiledNovember 3, 1983
GrantedAugust 5, 1986
Term endedAugust 5, 2003
Patent numberCA 1209201 A
Classification (IPC)H01M2/12 +1 more
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.