Laser beam irradiation device
CA 2461169 A1 · Owner: Yamazaki, Iwao · Inventors: Yamazaki, Iwao; Yamazaki, Kimiyo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A laser light irradiator which can comply both treatments of non-thermal reaction and photothermal reaction by switching the output of laser light with fluctuations in the excitation current of a semiconductor laser diode. A reference signal for a CPU 41 to decide the output level of a semiconductor laser diode (35) in accordance with the on/off operations of an output switch (S2) is output via an I/O port (44) and a D/A converter (471) and amplified by an amplifier (472) to generate a reference voltage of laser output. Since a semiconductor laser diode (35) has a structure of extracting laser output from both sides of the device, one laser output is sensed by a photodiode (473) and …
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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 September 11, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 11, 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.