Portable jaffna solar lamp
CA 2273056 A1 · Owner: Shanthikumar, Sathurukulasingam · Inventors: Shanthikumar, Sathurukulasingam
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Usually solar lamps consist of a lamp with a 6 Volt or 12 Volt rechargeable battery and a 6V or 12V bulb. The solar lamp is charged by a solar panel which produces electricity on exposure to sunlight and charges the 6V or 12V rechargeable battery during the day time. At night the charged, battery operates a 6V or 12V bulb in the lamp producing light. In this invention called the "Portable Jaffna Solar Lamp" a 15 watt solar, panel, on exposure to sunlight produces electricity and electrically, charges a completely sealed maintenance-free, rechargeable, 12 Volt 17 Ampere Hour Lead acid battery (battery capacity can range from 17 to 20 Ampere Hours). But unlike in other models of solar lamps …
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 May 27, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 27, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 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.