Method for cracking off glassware
CA 2291592 A1 · Owner: Cuvelier, Georges · Inventors: Cuvelier, Georges
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for cracking off glassware (1) whereby the glass pieces (1) are subjected to a laser radiation treatment (F) characterised in that it consists in: subjecting in a first step, the part of the piece to be cracked off (3) to the action of a continuous laser radiation beam (F) or to continuous laser radiation beams (F) such that said beams touch said part (4) in one of the zones with power density per unit area less than 30 W/mm?2¿; and in a second step in subjecting the points in the part to be cracked off which has been subjected in the first step to the action of a continuous laser radiation beam (F) to the action of a focused pulsating laser beam (F) with …
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 June 10, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 10, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 10, 2020.
- 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.