Destructible films for marking, process for their production, and their utilization
CA 1110792 A · Owner: Nippon Carbide Kogyo Kabushiki Kaisha · Inventors: Sahara, Masao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A destructible marking film having a thickness of about 30 to about 100 microns and a destructibility of not more than 150 kg.cm/mm, said film being composed of a resin composition comprising, (A) 100 parts by weight of a vinyl chloride resin having a degree of polymerization of about 600 to about 1,600 and optionally containing not more than about 15% by weight of comonomer unit, (B) about 10 to about 100 by weight of a thermoplastic urethane resin, (C) about 2 to about 15 parts by weight of an ethylene/vinyl ester copolymer, and, (D) about 10 to about 150 parts by weight of a pigment;, a process for preparing the marking film; and a method for marking by applying the same to the surface …
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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
- Granted October 13, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 1998.
- 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.