High speed noise immune bipolar logic family
CA 1303151 C · Owner: Hagley, William Andre · Inventors: Xu, Jingming; Hagley, William Andre; Day, Derek Joseph
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 logic gate comprises: an input terminal an, output terminal, and a pair of voltage supply terminals; a bipolar switching transistor having a base a collector, an, emitter, an emitter-base junction and a collector-base, junction, the emitter being connected to one of the voltage supply terminals; a load device connected between the other of the voltage supply terminals and the collector of the bipolar transistor; a current independent voltage source and a voltage independent current source connected in series between the input terminal and the base of the bipolar transistor; and discharge means connected in parallel with the current independent voltage source …
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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 June 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 2009.
- 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.