Dynamic laser marking
CA 2100550 C · Owner: Clement, Robert Marc · Inventors: Ledger, Neville Richard; Clement, Robert Marc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus are described for marking a moving body of material (26). The method comprises the steps of directing at the moving body (26) a high energy density beam (46 58), concentrating the beam so as to produce an illuminated spot at a location on or within the moving body (26) and moving the spot in , accordance with the resultant of two components of movement, the first being equal to the velicity of the moving body (26) and the second being relative to the moving body (26) so as to create a mark of a predetermined shape. In a preferred embodiment the apparatus includes at least one moveable galvanometer mirror (68, 70) capable of moving the spot in accordance with the …
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 January 15, 1992 and granted July 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 15, 2014.
- 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.