Non-volatile ram bit cell
CA 2019310 C · Owner: Hughes (U.K.) Limited · Inventors: Murray Kenelm Gerald Digby; Dodd, Gary Lawrence; Bennett, Daniel Harrosn
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A memory cell comprising a bistable latch having first and second nodes, at least two non-volatile transistors (NV1, NV2) each having a source a drain and a, control gate, the control gates being connected to the first node (NODE 1) and one of the source and drain of each transistor being connected to the second node (NODE 2) each, non-volatile transistor (NV1, NV2) further having a substrate and a floating gate between the control and the substrate, and switching means (N1, N2 TG1) for enabling, the transistors to be checked in circuit.
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 June 21, 1990 and granted October 2, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.