Rubber composition and tire compriging the same
CA 2385205 A1 · Owner: Nippa, Satoru · Inventors: Nippa, Satoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rubber composition useful for a tire is provided. The composition comprises 100 parts by weight of a rubber containing about 70 % by weight or more of a styrene-butadiene rubber based on the rubber, the styrene-butadiene rubber having a styrene content of about 20 % by weight to about 60 % by weight based on the styrene-butadiene rubber; 5 to 100 parts by weight of a boehmite; 0 to 100 parts by weight of a silica having a BET specific surface area of from about 130 m2/g to about 300 m2/g; and 5 to 200 parts by weight of a carbon black. The tire comprising the rubber composition is excellent in fuel consumption wet, traction and wear resistance.
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 6, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 6, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 6, 2024.
- 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.