Pneumatic tire with all-weather driving performance
CA 2057435 A1 · Owner: The Yokohama Rubber Co. Ltd. · Inventors: Midorikawa, Shingo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pneumatic tire has a tread formed from orienting short fibers of a selected polyamide resin of specified molecular weight into a selected rubber. The tread has specified dynamic modulus characteristics which contribute to enhanced driveability on ice and snow as well as on dry and wet roads.
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 December 11, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 11, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 2013.
- 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.