Laser beam machining and apparatus therefor
CA 2020293 C · Owner: Shachihata Kogyo Kabushiki Kaisha · Inventors: Kondo, Hiroaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a laser machining process and an apparatus therefor, in which a main sensor is moved for scanning relative to a scanning model having a machining pattern depicted thereon, and a laser beam generator is moved in, synchronization with this scanning relative to a work, piece comprising a rubbery material so as to effect laser beam irradiation on the work piece in accordance with the pattern detected by the main sensor; characterized in that said main sensor has a sub-sensor for detecting the machining pattern prior to the detection by the main sensor and that control of the output of the laser beam generator is achieved by stepwise shifting in accordance with the pattern detection …
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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 July 3, 1990 and granted November 10, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 3, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 2012.
- 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
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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.