Expired Canadian patentCanada
D.c. stable single device memory cell
CA 1058753 A · Owner: International Business Machines Corporation · Inventors: Malaviya, Shashi D.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A single device D. C. stable memory cell comprising, a bistable bipolar transistor having a lightly-doped base and an emitter which is substantially coextensive with the base.
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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 July 17, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 17, 1996.
- 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—
GrantedJuly 17, 1979
Term endedJuly 17, 1996
Patent numberCA 1058753 A
Classification (IPC)H01L29/70 +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.