Protection circuit for integrated circuit devices
CA 1161968 A · Owner: Rca Corporation · Inventors: Avery, Leslie R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
RCA 75,166, PROTECTION CIRCUIT FOR, INTEGRATED CIRCUIT DEVICES Abstract of the Disclosure, The protection circuit is a four layer PNPN device which includes a PMOS IGFET. The device is designed to pass current to ground when large transients are imposed across its two external terminals, thereby protecting the integrated 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
- Granted February 7, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 7, 2001.
- 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.