Butyl rubber composition for tire treads
CA 2452910 A1 · Owner: Bayer Inc. · Inventors: Kulbaba, Kevin; Resendes, Rui; Von Hellens, Carl Walter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method of improving the hardness and abrasion resistance while maintaining the useful dynamic properties inherent to butyl, based tire tread compounds by adding HXNBR to a rubber composition comprising at, least one butyl elastomer for a tire tread in particular a tire tread , suitable for a pneumatic tire.
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 December 12, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 12, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 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.