Colored marking of plastic surfaces by means of laser radiation
CA 2111162 A1 · Owner: Haack, Ulrich · Inventors: Haack, Ulrich; Kurz, Klaus; Witan, Kurt
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the disclosure, Colored marking of plastic surfaces by means of Laser radiation, A process for marking plastics in which a carrier, material which is provided with a sublimable dye is pressed against the plastic to be marked which comprises providing the plastic surface with colored symbols by means of a laser which emits in the visible wavelength range (wavelength 532 nm), giving abrasionresistant colored symbols of high resolution.
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 December 10, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 10, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2015.
- 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.