Power supply device, power supply method and electronic equipment
CA 2311797 A1 · Owner: Sony Computer Entertainment Inc. · Inventors: Kawai, Eiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
It is an object of the present invention to provide a power supply device that is able to be used even when power is supplied to electronic circuits using secondary batteries of nickel-cadmium batteries and nickel-hydrogen batteries or the like whose recharging capacities are lowered wherein original , performance of the secondary battery can be maintained. A power supply circuit (1) according to the present invention includes a connector (2) which is electrically connected to a secondary battery (3) which is a storage a , voltage step-up circuit (4) that steps up an output voltage from the secondary battery (3), and a power supply line (5) for supplying the stepped-up output voltage …
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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
- Filed September 27, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 27, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 27, 2021.
- 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.