Pneumatic tire tread with high snow traction and improved groove-crack resistance
CA 2561300 C · Owner: Suzuki, Takayuki · Inventors: Suzuki, Takayuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a pneumatic tire having improved snow traction and groove-crack resistance comprising a tread having a plurality of blocks divided by grooves wherein a , ratio of a block facing length c to a width b of the groove is 0.50 <= c/b , <= 1.30, a ratio of the block facing length c to a depth a of the groove is 0.40 <= c/a <= 0.85 wherein c, is a length of a shorter line segment obtained by selecting a pair of blocks adjacent to each other across a groove from a plan view of the tread, drawing perpendicular lines from two vertices of one block on a side of a sandwiched groove to other block across the sandwiched groove respectively, connecting ends of the perpendicular …
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 26, 2005 and granted December 9, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 26, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.