Voltage stabilizing circuit
CA 2078795 C · Owner: Kimura, Yasuhiro · Inventors: Kimura, Yasuhiro; Takayama, Tomio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A voltage stabilizing circuit comprising a voltage detecting circuit (11) for detecting a control voltage (Vr) in response to an output voltage (V3) of the voltage stabilizing circuit, and a control circuit (9) for stabilizing, based on the control voltage (Vr) the, output voltage (V3) of the electronic device (10). To remove the component of a base-emitter voltage from the control voltage, the voltage detecting circuit (11) includes a first series circuit (12) and a second series circuit (13) connected to each other in series. The first series circuit consists of a first resistor (3) and a first transistor (4) connected in series. The second series circuit consists of a second resistor (5) …
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 September 22, 1992 and granted August 11, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 22, 2014.
- 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.