Rubber and plastic accelerators/cross-linking agents
CA 2280329 A1 · Owner: Yankner, Paul R. · Inventors: Yankner, Paul R.; Wright, Susan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Rubber and plastic accelerator formulations of the present invention are directed, to formulations containing an accelerator compound comprised of an organicbased, quaternary ammonium salt. Preferably the accelerator compound of the, present invention is comprised of a quaternary ammonium salt selected from the group consisting of trimethylbetahydroxyethyl ammonium hydroxide (TMBHEAH) carboxymethyltrimethyl ammonium hydroxide (CMTAH) methylallylbenzylphenol, ammonium iodide benzyltriethyl ammonium chloride, hexadecyltrimethyl ammonium chloride imidazolium compounds. As particularly preferred embodiments, the accelerator formulations are comprised of a choline based compound comprised of …
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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 17, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 17, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 2021.
- 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.