Elastomeric composition
CA 2442965 A1 · Owner: Jones, Glenn E. · Inventors: Waddell, Walter H.; Duvdevani, Ilan; Jones, Glenn E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention includes an elastomeric composition of a halogenated rubber component, a filler such as carbon black and polybutene processing , oil, the processing oil having a number average molecular weight of least 400 in one embodiment, and less than 10,000 in another embodiment. The rubber component can be a halogenated butyl rubber or a halogenated star-branched butyl rubber. In one embodiment, the polybutene processing oil is present in the composition from 2 to 30 phr, while the halogenated rubber component is present in the composition from 50 to 100 phr in one embodiment and the , filler is present from 10 to 150 phr in one embodiment. Further a secondary , rubber …
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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 16, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 16, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 2023.
- 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.