Expired Canadian patentCanada
Low power voltage sensing circuit
CA 2107221 C · Owner: Silicon Storage Technology, Inc. · Inventors: Jenq, Ching S.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A voltage sensing circuit (10) using a pmos transistor (14) to provide a sensing signal at sensing node (15) which is applied to a driver circuit (60) to produce a desired output voltage signal (13).
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
- Filed March 9, 1992 and granted November 28, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 9, 2014.
- 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 9, 1992
GrantedNovember 28, 2000
Term endedMarch 9, 2012
Patent numberCA 2107221 C
Classification (IPC)G11C11/40 +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.