Method and device for identification of characters written on a semiconductor sheet comprising at least one alignment marker
CA 2474543 A1 · Owner: Recif · Inventors: Gaudon, Alain; Astegno, Pierre; El Jarjini, Mohamed
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method and device for identification of characters written on a semiconductor sheet comprising at least one alignment marker with the following method steps: - gripping the semiconductor sheet between three rotating stops (6, 7, 8) connected to a prehensile arm (5) by means of , applying pressure to the periphery thereof orientation of the gripped sheet , by means of rotation of one (8) of the three stops such as to place the marker in a given position, placing means for reflecting (13) specific illuminating beams in a region close to and above the characters for identification illumination of the characters for identification by means of a specific …
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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 January 28, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2025.
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Timeline
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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.