Pneumatic tires and method of making
CA 2281692 A1 · Owner: Smits, Atte · Inventors: Thise, Marie-Rita; Craig, David; Smits, Atte
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to new and novel tire construction and method of making same wherein the uncured elastomeric material that is laid upon the tire building drum (22) during building of the tire preform (10) will not experience substantially meridional stretch which would otherwise cause a decrease in the uniformity of ply thickness during expansion of the preform in the vulcaninzing mold.
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 February 26, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 26, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2019.
- 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.