Peroxide curable compounds based on butyl-like polymer without conjugated aliphatic dienes in its composition
CA 2406775 C · Owner: Bayer Inc. · Inventors: Gronowski, Adam A.; Glander, Stephan; Osman, Akhtar
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 a shaped article comprising at least one peroxide curable compound comprising butyl-like polymer without any conjugated aliphatic dime in its composition said polymer containing less than 15 wt.% of solid matter insoluble in boiling cyclohexane under reflux for 60 min. In another of its aspects the present invention relates to a sealing material and a medical device comprising at least one peroxide-curable compound comprising a butyl-like polymer containing less than 15 wt.% of solid matter insoluble in boiling cyclohexane under reflux for 60 min. In still another of its aspects the present invention relates to a process for producing a butyl-like polymer …
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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 October 3, 2002 and granted November 29, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 3, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 3, 2024.
- 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
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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.