Film removing device for resin molded material
CA 2220164 C · Owner: Inagaki, Yuji · Inventors: Uwaji, Tetsuo; Ikeya, Toru; Takeuchi, Naokazu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
According to a film removing device, a film-coated resin molded material having a film coated on one surface of a matrix resin is flattened by a flattening roll in a heating chamber. Further, the film-coated resin molded material is fed between a peeling roll and a feeding roll of roll type rolling means for rolling and stretching. The velocity of a peeling surface of the peeling roll is made relatively higher than the velocity of a feeding surface of the feeding roll, whereby a difference in elongation between the matrix resin and the film, and a shearing force are produced to peel the film. An applicator type supply device supplies a liquid as frictional force reducing means (e.g. water) …
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 October 31, 1997 and granted January 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 31, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 31, 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.