Speedy - super fast battery charger
CA 2127769 C · Owner: Chen, Qing Sheng · Inventors: Chen, Qing Sheng
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention applies a varying voltage current methodology which restores the battery's voltage exponetially and produces fascinating results. It does not only outperform the conventional chargers in terms of charging speed (under most conditions charging time is from a few minutes to within half an hour) but is also safely applicable to various type of batteries including Nickel Cadmium, Alkaline Zinc Carbon and Lithium, thus capable to extend an otherwise non rechargeable battery's life from a few times to over ten times. This super charger package is composed of an insulated plastic exterior box a power, transformer and a printed circuit board with the following major components: - …
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 July 11, 1994 and granted March 18, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 11, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 11, 2016.
- 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.