Thermoplastic resin composition
CA 2059389 C · Owner: Mitsui Chemicals, Inc. · Inventors: Yamamoto, Yohzoh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermoplastic resin composition according to the present invention comprises a polymer comprising recurring units derived from a polycyclic (meth)acrylate represented by the following formula I and a soft polymer in the proportion by weight of the polymer to the soft polymer of 99:1 to 90:60, wherein m is 0 or a positive integer n is 0 or 1, R is, hydrogen or methyl, R1-R18 are each independently an atom or a group selected from the group consisting of hydrogen halogen, and hydrocarbon groups, R15-R18 linked together, may form a, monocyclic or polycyclic group which may have a double bond or an alkylidene group, p is 0 or 1, and R a and R b each independently represent a hydrogen atom or …
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 January 15, 1992 and granted March 7, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 15, 2014.
- 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.