Variable wavelength laser light source
CA 2254468 C · Owner: Funakawa, Seiji · Inventors: Funakawa, Seiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A variable wavelength laser light source is disclosed which can improve the resolution of the outgoing light and output only pure laser light without the natural emitted light. A variable wavelength laser light source of the invention comprises an optical amplification element 11 first optical reflecting means 12, which is set at the end surface 11a of the optical amplification element 11 wavelength selection element 13 which is set at the end surface 11b of the optical amplification element 11 and selects and outputs the desired wavelength light emitted by the optical amplification element 11 second optical reflecting means, 14 reflecting the outgoing light from the wavelength selection …
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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 November 25, 1998 and granted January 15, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 25, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2020.
- 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.