Laser marking compositions and methods for producing bright oxidation resistant marks
CA 2326290 A1 · Owner: Dmc2 Degussa Metals Catalysts Cerdec Ag · Inventors: Knell, Timothy A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compositions and methods for laser marking substrates such as metal glass and ceramic are disclosed. A marking material is applied to the surface of the, substrate, followed by irradiation of a portion of the marking material to form a bright, oxidation resistant marking on the substrate. The non-irradiated portion of the marking, material is then removed from the substrate. The marking material comprises compounds such as metal salts and metal oxides which upon irradiation, form , oxidation, resistant metallic markings. The marking method is highly versatile can be , performed, quickly, and produces permanent marks of high resolution and contrast without damage, to the substrate.
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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 November 20, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2022.
- 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.