Switching circuit
CA 1136214 A · Owner: Exxon Research And Engineering Company · Inventors: Baker, Richard H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
U.S. 944,633, ABSTRACT OF THE DISCLOSURE (SEE FIGURE 1) First through fourth NPN switching transistors 1 3, 5, 7 having bases, receptive of first through fourth control signals respectively, are, connected in cascode between a first terminal 9 for receiving an operat-, ing voltage +El and a second terminal 11 for receiving a source of reference potential. The common connection between the second 3 and third S transistors is connected to an output terminal 19. A first diode is is connected between a third terminal 13 for receiving a clamping voltage æ 2 and the common connection between the uppermost first 1 and second 3 transistors, the diode 15 being polarized for clamping this common …
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 November 23, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 23, 1999.
- 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.