Means of enhancing laser processing efficiency of metals
CA 1295689 C · Owner: Duley, Walter W. · Inventors: Kinsman, Grant; Duley, Walter W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is described of enhancing the efficiency of laser processing of metals using a first last operating at a first wavelength by preprocessing with a second laser so as to define a track of reduced reflectivity. This is achieved by establishing areas on the metal surface to be worked and irradiating the areas with the second laser operating at a second and different wavelength from the first wavelength. The second laser is chosen to exhibit a significantly reduced reflectivity at the surface of the metal compared with the first wavelength. This decreases reflectivity of the surface to radiation of the first wavelength to improve efficiency of subsequent working by the first laser in …
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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
- Granted February 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 11, 2009.
- 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.