Expired Canadian patentCanada
Zinc-salts of certain mercapto compounds as antioxidants for high temperature aging of thermoplastic elastomers
CA 2067656 C · Owner: Montell North America Inc. · Inventors: Berta, Dominic A.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are dynamically partially or fully crosslinked thermoplastic elastomers, having incorporated therein zinc salts of certain mercapto compounds.
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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 April 30, 1992 and granted March 11, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 30, 1992
GrantedMarch 11, 2003
Term endedApril 30, 2012
Patent numberCA 2067656 C
Classification (IPC)C08L19/00 +2 more
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.