Radial tire with rust resistant reinforcing metal cords
CA 2010926 C · Owner: The Yokohama Rubber Co. Ltd. · Inventors: Imamiya, Susumu; Katoh, Hisao; Tozawa, Yukio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pneumatic radial tire for passenger cars and heavy duty use is disclosed, which tire has a rubber coated steel cord layer applied inter alia to its belt portion. The cord consists of a pair of steel filaments whose preform ratio "K" is set in the range of -K1 + 2.05 ~ K2 ~ -K1 + 2.50. Conformance to this preform ratio "K" provides filaments with periodically alternate contact and non-contact regions longitudinally of the cord.
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, 1990 and granted February 3, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2012.
- 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.