Radial tire
CA 2018217 C · Owner: Ochiai, Kiyoshi · Inventors: Ochiai, Kiyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A radial tire, of which initial carcass profile in an unused tire state is maintained through the tire life to prevent tire performances improved by arranging the carcass profile from being deteriorated, and in which, the ratio (R1/R1(5)) of the radius (R1) of curvature of the carcass profile in an upper sidewall region when the tire is mounted on the regular rim and inflated to the normal pressure to, the radius (R1(5)) of curvature of the carcass profile in an upper sidewall region when the tire is mounted on the regular rim and inflated to 5% of the normal pressure is not less than 0.70 and not more than 0.95 the ratio (TR1/SW) of, the radius (TR1) of curvature of the tread face to the …
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 June 4, 1990 and granted December 13, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 4, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 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.