Combination of heavy duty pneumatic radial tires for use in winter season
CA 2063949 A1 · Owner: Matsumoto, Hiroyuki · Inventors: Koseki, Hiroyuki; Aoki, Namito; Ichiki, Yasufumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A combination of heavy duty pneumatic radial tires for use in winter season having a negative ratio of not less than 30% is a tire to be mounted on a nondriven steering shaft of a vehicle and a tire to be mounted on a driving shaft thereof, each tire having a ratio of ground contacting width to maximum tire width within a particularly range. In such a combination the, resistance to wondering is largely improved while sufficiently maintaining high performances on snow and ice 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 March 25, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 25, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 25, 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.