Method, apparatus, and communication device for charging a charge storage device which is momentarily connected to a fixed load
CA 2198013 C · Owner: Alameh, Rachid Mohsen · Inventors: Eastmond, Bruce Charles; Alameh, Rachid Mohsen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a method (100) an apparatus (400), and a , communication device (700) for automatically maintaining a state of full charge in a charge storage device, such as a secondary battery (414) to which , a fixed load (412) is momentarily connected. Since the load is fixed a , predetermined amount of charge is removed from the charge storage device each time the load is connected. A counter (404) is incremented while the load (412) is connected. From the count, the amount of charge that must be replaced can be determined. As the charge is replaced the count is decremented.
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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 April 26, 1996 and granted June 6, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 26, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 2018.
- 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
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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.