Pneumatic radial tire
CA 1302854 C · Owner: Takeuchi, Akihiro · Inventors: Takeuchi, Akihiro; Koyama, Toshio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pneumatic radial tire, in which stone entrapment in the tread groove is prevented and wet grip property is maintained comprises: a tread provided on its central part with a central longitudinal groove extending continuously zigzag in the circumferential direction of the tire to form a plurality of zigzag edge portions protruding axially inwardly on the sidewalls thereof; a plurality of platforms formed at the zigzag edge portions and protruding from the sidewalls of the central longitudinal groove ; the depth of the platforms from the tread surface to the platforms being in the range of 40 to 80% of the depth of the central longitudinal grooves; the circumferential length of the platforms …
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
- Granted June 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 2009.
- 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.