Curable composition having a high amount of antiozonant and an article made therefrom
CA 2324372 A1 · Owner: Halladay, James R. · Inventors: Halladay, James R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition that includes (a) at least one elastomer; (b) at least one curing agent; and (c) at least 15 parts (per hundered parts by weight of the elastomer) of an antiozonant package that includes at least two antiozonants that are each selected from different antiozonant classes wherein the antiozonant classes are dialkyl p-phenylenediamine N-alkyl N-aryl , phenylenediamine and 2,4,6-tris(N-alkyl-p-phenylenediamino)-1,3,5 triazine. The composition is useful to make a shear element for use in a damper or a load element for use in a mount.
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 May 4, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 4, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 4, 2020.
- 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.