Heavy duty tyre
CA 2502301 C · Owner: Michelin Recherche Et Technique S.A. · Inventors: Palgen, Marie-Claude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a tyre with radial carcass reinforcement designed to equip a heavy vehicle such as a transport vehicle or a civil engineering machine. In concerns in particular a tyre having an axial width greater than 37 inches. The inventive tyre comprises a working crown reinforcement (20) consisting of at least two continuous plies (15 16) formed with reinforcing elements crisscrossed from one layer to the next forming with the circumferential direction angles ranging between 10 and 35· which is completed on each side of the circumferential median plane by at least three other half-plies (17 18, 19) whereof the reinforcing elements form with the circumferential direction angles …
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 October 9, 2003 and granted February 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 9, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2025.
- 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.