Vulcanizable rubber compositions and vulcanized rubber prepared therefrom
CA 1093246 A · Owner: Sanyo Trading Co. Ltd. · Inventors: Onizawa, Masao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vulcanizable composition comprising a bromobutyl rubber and a specific amino acid. These compositions on vulcanization provide rubbers of improved properties compared to the known sulfur-vulcanized bromobutyl rubber systems, for example an improved modulus.
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 6, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 6, 1998.
- 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.