Resin composition
CA 1309538 C · Owner: Sakai, Jiro · Inventors: Wakatsuki, Kizuku; Tanaka, Shigeo; Fukao, Tomohisa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed resin composition comprising 1 to 99% by weight of a polymer A and 1 to 99% by weight of a polymer B, the polymer A and B having refractive indexes which permit satisfaction of the relation: a ? 0.015 and b-a ? 0.005, wherein a and b are the minimum and the maximum respec-, tively, of absolute value of the difference between the refractive indexes of the polymers A and B in the temperature range of 20° to 100°C; said composition being useful as a functional resin for buildings, etc.
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 October 27, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 2009.
- 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.