Diolefin polymer or copolymer and a process for the production of the same
CA 1315913 C · Owner: Soga, Kazuo · Inventors: Doi, Yoshiharu; Ueki, Satoshi; Soga, Kazuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A diolefin copolymer and a process for the production of the same, ABSTRACT OF THE DISCLOSURE 1,4-addition copolymers of diolefins, useful as a functional or active polymer is provided which comprises, in combination, the following recurring units (A) and (B):, (A) (B), , wherein n = 4 to;6 and A/B mole ratio = 0 to 98/100 to 2.
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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 April 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 6, 2010.
- 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
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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.