Canadian application, no grantCanada
Tire with silica reinforced tread
CA 2104529 A1 · Owner: Bauer, Richard George · Inventors: Sandstrom, Paul Harry; Bauer, Richard George; Burlett, Donald James
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pneumatic tire with a tread comprised of elastomer, silica, optionally carbon black and a, silica coupler comprised of dithiodipropionic acid.
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 August 20, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 20, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 20, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 20, 1993
GrantedNo grant recorded
Term endedAugust 20, 2013
Patent numberCA 2104529 A1
Classification (IPC)C08K3/04 +2 more
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.