Thermoplastic resin composition
CA 1286830 C · Owner: Mitsui Petrochemical Industries Ltd. · Inventors: Shigemoto, Hiromi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Title of the Invention, THERMOPLASTIC RESIN COMPOSITION Abstract of the Disclosure, A thermoplastic resin composition having excellent transparency and a high ultraviolet transmittance and free from a reddish color is obtained from a polymer or copolymer of 4-methyl-1-pentene and a blue pigment. Preferably the, composition further comprises a black pigment and/or a red pigment. The product is useful for containers which come in contact with food, electrical devices and optical devices.
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
- Granted July 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 2008.
- 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.