Laser beam branching apparatus
CA 2221489 C · Owner: Kawamura, Atsuhiko · Inventors: Kawamura, Atsuhiko; Nagano, Osamu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A branching mirror and a transfer mirror receiving a laser beam reflected on the branching mirror and outputting a laser beam in a direction parallel to the laser beam coming into the branching mirror are fixed to and mounted on one mirror holder. The mirror holder is movably provided between a branching position at which the branching mirror is located in a light path of the laser beam and an escaping position at which the branching mirror is located outside the light path of the laser beam, and while the mirror holder is located at the beam branching position, a laser beam from a laser oscillator can be introduced to the branching mirror.
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 November 19, 1997 and granted February 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 19, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 2019.
- 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.