Rubber compositions for cure-bonding, method of cure-bonding and metal-rubber bonded articles
CA 2095791 A1 · Owner: Yamamoto, Keisaku · Inventors: Yamamoto, Keisaku; Koshiba, Junichi; Ikeda, Kiyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a rubber composition for curebonding to metals which comprises a rubber component and at least one metal acrylate compound represented by the following formula (I):, (I), wherein R represents a hydrogen atom or a methyl group M, represents a mono- to tri-valent metal atom m represents, an integer of 1 to 3 and n represents an integer of 0 to 2. The rubber composition is cured in contact with a metal, thereby to bond the rubber to the metal without using adhesives.
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 May 7, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 7, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 2015.
- 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.