Articles for semiconductor industry
CA 2214192 A1 · Owner: Dyneon Gmbh · Inventors: Hutnyan, Jill L.; Hintzer, Klaus; Schlipf, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Articles for semiconductor industry, Articles for the application in the semiconductor industry consist essentially of modified polytetrafluoroethylene. Such articles comprise carriers for wafers or flat panel displays or etch basins for wafer carriers. Such articles can be obtained by molding modified polytetrafluoroethylene powder and subsequent sintering of the molded billet or by ramextrusion if necessary followed by, maching step and optionally a post treatment by a polishing step.
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 August 28, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 28, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 28, 2019.
- 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.