Expired Canadian patentCanada
Lead attachment for tantalum anode bodies
CA 1211168 A · Owner: Union Carbide Corporation · Inventors: Mierke, Charles H.; Long, Noel V.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Tantalum anode bodies having regions of different density with a lead attached to the region of higher density.
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 September 9, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 9, 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.
FiledDecember 8, 1983
GrantedSeptember 9, 1986
Term endedSeptember 9, 2003
Patent numberCA 1211168 A
Classification (IPC)B22F3/11
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.