Pneumatic tires
CA 2064405 A1 · Owner: Ichiki, Yasufumi · Inventors: Ichiki, Yasufumi; Ikeda, Hiromichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pneumatic tire comprises a tread portion provided with a plurality of block rows in the widthwise direction of the tire each defined by circumferential grooves and a plurality of lateral grooves and has platforms arranged in the lateral grooves defining the blocks in at least one block row. In this case the, platform has a top of arc shape in section at least viewing from the circumferential direction of the tire and an angle .beta. of a notched wall continuously extending from the top of the platform to a surface of the tread portion with respect to the tread surface is smaller than an angle .alpha. of a sidewall of the lateral groove with respect to the tread surface.
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 March 30, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 30, 2014.
- 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.