Burst-ultrafast laser machining method
CA 2296924 A1 · Owner: Herman, Peter R. · Inventors: Marjoribanks, Robin; Oettl, Anton; Herman, Peter R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of laser processing of materials. The combination of ultrafast laser pulses and high-repetition rate (>1MHz) bursts (or continuous operation) defines a new regime for material processing. The high rate controls thermal processes evolving between each ultrafast laser pulse that 'prepares' the sample, surface or bulk for optimal interaction with subsequent ultrafast laser pulses. The addition of this laser-controlled thermal component overcomes several current limitations of ultrafast laser processing at lower repetition rates (< 1MHz), providing means to fully harness the many attributes by ultrafast lasers, for material processing applications.
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 25, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 25, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 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.