Anti-aging agents for rubber vulcanizates based on organic compounds containing conjugates azadienes
CA 2447207 A1 · Owner: Lanxess Deutschland Gmbh · Inventors: Oberthuer, Markus
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 anti-aging agents based on organic compounds containing conjugated azadiene groups, which are capable of providing rubber vulcanizates with long-term protection against thermal aging fatigue and , aging as, a result of the effects of oxygen. The anti-aging agents according to the present, invention are further characterized in that they are hardly ever extracted from the, vulcanizates by water, oils and/or gasolines or hydraulic fluids.
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 28, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 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.