Pneumatic tire
CA 1320421 C · Owner: Kolowski, Michael Alois · Inventors: Hopkins, William Michael; Kolowski, Michael Alois; Waibel, Terry John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pneumatic tire (10) has a preferred, cross-sectional shape which acts in concert with a preferred tread structure to provide varying performance characteristics under varying operating conditions. The tread (11) has a directional tread pattern, with the net-to-gross ratio being higher in a central portion (CP) of the tread than in the laterally outer portions (OP1,OP2). The stiffness of the block elements (64,65,66,67,68,69,70,71) of the tread also varies across the width of the tread.
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 July 20, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 20, 2010.
- 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.