Tunable laser source device
CA 2390782 A1 · Owner: Ando Electric Co. Ltd. · Inventors: Ema, Nobuaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a tunable laser source device for branching a light output from a tunable laser source portion 1 to supply to a wavelength measuring device 6 and a gas cell as a reference for calibrating wavelength 5 and then controlling the tunable laser source portion in response to an output of the wavelength measuring device, a temperature controlling device is provided to the wavelength measuring device to mate a result measured by the wavelength measuring device with an interval of a plurality of absorbed line wavelengths in the gas cell as a reference for calibrating wavelength.
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 June 14, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 14, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 14, 2024.
- 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.