Method of laser machining molds with microtextured surfaces
CA 2025484 A1 · Owner: Curtis, James M. · Inventors: Sanders, Ronald S.; Curtis, James M.; Sanders, Ronald S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is provided for preparing a three dimensional object such as a mandrel for forming envelopes for mammary prostheses or other implantable medical device by dipping the mandrel, etc. The envelopes are provided with micropillars on the exterior surface which resembles the mandrel surface in negative relief. According to the process a workpiece of solid stock material such as polymer is provided in the shape of the desired prostheses. It is positioned for rotation on a supporting shaft or other holding mechanism. A pulsing laser beam directed at the, workpiece is moved in a plane parallel to the axis of rotation of the workpiece while the beam is maintained approximately perpendicular …
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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 September 17, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 17, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 17, 2012.
- 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.