A method for manufacturing thermo-plastic sheets bearing embossed patterns thereon and an apparatus therefor
CA 2198971 A1 · Owner: Funaki, Akira · Inventors: Moriwaki, Ryuji; Funaki, Akira; Fujii, Atsushi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provided is a method for manufacturing a thermo-plastic resin sheet bearing an embossed pattern, which employs a manufacturing apparatus includes a first roll having an elastic material coated surface a mirror-faced, metal, endless belt, which is wound around the first roll and a second roll anda third roll so provided that the metal endless belt is wrapped partially around the third roll, which contacts the first roll via the metal endless belt and which, has an embossed pattern formed on one surface. According to this method the thermo-plastic resin sheet, partially melted is fed between the metal, endless belt which contacts the first roll, and the third roll. The elastic member is …
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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 March 3, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 3, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 3, 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.