High-speed radial tire for heavy load
CA 2014310 C · Owner: Sumitomo Rubber Industries Limited · Inventors: Yonekawa, Yasusuke; Miyazaki, Shinichi; Ueyoko, Kiyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high-speed radial tire for heavy load comprises a carcass which includes a carcass cords made of organic fibers inclined at an angle of 75 to 90 deg. against the tire's equator a belt, layer which includes belt cords made of organic fiber inclined at an angle of 5 deg. or less against the tire's equator and is disposed outside the carcass, and a cut breaker which includes a supplemental cords inclined at an angle of 0 to 70 deg. against the tire's equator and is disposed between the carcass and belt layer. The carcass cords are made of an elastic cords of which stretch S (X) upon load with 5 kg is 5 to 10.
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 April 10, 1990 and granted December 13, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 2012.
- 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.