Expired Canadian patentCanada
Electro-discharging sheet, and an electro-discharging apparatus provided with an electro-discharging electrode composed of the said sheet, and a process for electro-discharging with the said apparatus
CA 996181 A · Owner: Kohkoku Chemical Industry Co. · Inventors: Azuma, Kanae; Kanaya, Yoshinosuke; Hasegawa, Minoru
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordRead 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 31, 1976. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 31, 1993.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedAugust 31, 1976
Term endedAugust 31, 1993
Patent numberCA 996181 A
Classification (IPC)H05F3/02 +2 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.