Methacrylic resin modifier
CA 2324020 A1 · Owner: Yamaguchi, Katsumi · Inventors: Yamaguchi, Katsumi; Takaki, Akira; Nagata, Norio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A modifier which comprises a blend of an impact modifier and a polymeric processability modifier in a weight ratio of 95/5 to 80/20 and in which a 0.4 wt.% toluene solution of the polymeric processability modifier has a specific viscosity as measured at 30 ~C of 2.5 to 5Ø It imparts impact resistance and high transparency to methacrylic resins processed under a wide range of conditions.
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 12, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 12, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 12, 2022.
- 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.