Pneumatic tire
CA 2462597 A1 · Owner: Watanabe, Susumu · Inventors: Watanabe, Susumu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pneumatic tire, wherein at least one peripheral main groove (2) is provided in a tread center area and inclined main grooves (3) inclined diagonal-outward in a direction reverse to the specified rotating direction of the tire and reverse inclined main grooves (4) inclined diagonal-outward in a direction reverse to the inclination direction of the inclined main grooves are disposed on both sides of the peripheral main groove alternately in the circumferential direction of the tire, the inner ends of the inclined main grooves (3) are connected midway to the reverse inclined main grooves (4) in the area of 10 to 20% of a contact width from a tire center and the outer ends thereof are …
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 November 28, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 28, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 2024.
- 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.