Easily transportable and meterable mixtures of aromatic oils and phenylenediamines having high stability in storage
CA 2216066 A1 · Owner: Bayer Aktiengesellschaft · Inventors: Laue, Christian; Ruetz, Lothar; Preub, Reinhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to easily conveyable and easily meterable mixtures havinghigh stability in storage containing aromatic mineral oils and phenylenediamines the content of phenylenediamines in the mixture being 1 to 99 wt.%. The mixturesof mineral oils and phenylenediamines according to the invention are used in theproduction of rubbers and rubber articles.
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 September 19, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 19, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 19, 2019.
- 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.