Rubber mixtures containing 1,4 butenediol (polyether)
CA 2393927 A1 · Owner: Bayer Aktiengesellschaft · Inventors: Weidenhaupt, Hermann-Josef; Scholl, Thomas (Deceased)
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 rubber mixtures with improved processing behavior and high filler activity containing 1,4-butenediol, and/or 1,4-butenediol polyether as well as the use of the rubber mixtures for the production of vulcanizates, in particular for the production of highly reinforced, abrasion-resistant molded articles and preferably for the, production of tires that have a low rolling resistance and a high abrasion resistance.
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 July 16, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 16, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 2024.
- 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.