Unsaturated polyester resin compositions and electrical laminates made therefrom
CA 1337915 C · Owner: Nishimura, Asaichi · Inventors: Kawai, Yousuke; Fushiki, Yasuo; Tsunemi, Hidenari
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An unsaturated polyester composition is provided comprising an unsaturate polyester component, a cross-linking monomer and as a modifier of the resin a polyoxyalkylene alcohol at least partially esterified with a polymerizable unsaturated carboxylic acid. The modifier is produced by esterifying the hydroxy group of a polyoxyalkylene mono- or polyalcohol at least partially with a polymerizable carboxylic acid such as maleic acid.
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 January 9, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 9, 2013.
- 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.