Charge transfer logic gate
CA 1049142 A · Owner: Western Electric Company, Incorporated · Inventors: Walden, Robert H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A charge transfer logic gate comprises a plurality n of one-bit shift registers which fan-in to the series combination of a logic cell and an output cell. Each shift register comprises the series combination of two subcells each of area A. The subcells are separated from one another and from the logic cell, by potential barriers of magnitude VB established illustratively by ion implantation. The areas of the logic and output cells are both n x A and the two are separated by a threshold potential barrier of magnitude VT. To detect the presence of m and n inputs applied to separate ones of the shift registers (2< m <n) the thresh-, old barrier is preferably made to …
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 20, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 20, 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.
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.