Process for hydrogenating conjugated diene polymers
CA 1203947 A · Owner: Nippon Zeon Co. Ltd. · Inventors: Oura, Kiyomori; Kohtaki, Takaaki; Kubo, Yoichiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for catalytically hydrogenating a carboncarbon double bond or a conjugated diene polymer by introducing hydrogen in the solution or said polymer characterized in, that a palladium salt or a carboxylic acid is used as a catalyst.
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 April 29, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 29, 2003.
- 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.