Pneumatic radial tire
CA 1284613 C · Owner: Takahashi, Ken · Inventors: Kabe, Kazuyuki; Koishi, Masataka; Takahashi, Ken
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A radial tire having a narrow groove extending in the circumferential direction of the tire and provided in each of both shoulder portions of the surface of a tread, wherein when the depth of said narrow groove as determined in the radial direction of the tire, the distance between the internal edge on said shoulder side of an opening portion of said narrow groove and the outside surface of said shoulder portion as determined parallel to the surface of said tread and, the distance between the internal wall surface on the shoulder side of the bottom of said narrow groove and the outside surface of said shoulder portion as determined parallel to the surface of said tread are expressed by h, …
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 4, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 4, 2008.
- 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.