Pneumatic safety tire
CA 2003756 C · Owner: Itoh, Hiroshi · Inventors: Kajikawa, Akira; Kojima, Yoshihide; Itoh, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improvement is provided in a pneumatic safety tire having a pair of bead portions with a bead core sidewall, portions extending radially outward one from each of the bead portions, a tread portion extending between the sidewall portions, the tread portions being disposed outward of the carcass, a toroidal carcass extending through the tread and sidewall portions and turned up at the both edges around the bead cores, a belt disposed between the carcass and the tread and having cords laid at a relatively small angle relative to the equator of the tire and a sidewall, reinforcing layer disposed inward of the carcass in each sidewall portion. There are particularly specified relationships in …
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 23, 1989 and granted February 20, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 23, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 2011.
- 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.