Process to manufacture pre-cured tread and vulcanizable rubber compound
CA 2120473 A1 · Owner: Ramos, Sergio · Inventors: Ramos, Sergio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved Process to Manufacture pre-cured treads to rebuild tire treads and the improved vulcanizable rubber composition for use in such process in which it is essentially foreseen self-adhesive to: (a) arrange a layer of self adhesive vulcanizable rubber composition having from 65% to 75% of natural rubber from 15 to 30%, of strengthening mineral pigments and from 10 to 15% of curing chemical reactants, onto the lower face of the crude tread body to be bonded to the tire body before the, pre-curing of the tread body (b) putting a protective, plastic sheet under the said vulcanizable rubber layer and (c) pre-curing in a vulcanizing press the said tread structure formed by 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
- Filed March 29, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 29, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 29, 2016.
- 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.