Rubber modified styrenic polymer compositions formed from hydroperoxide derivatives of rubbery polymers
CA 1267740 C · Owner: Hahnfeld, Jerry L. · Inventors: Hahnfeld, Jerry L.; Habermann, David A.; Platt, Alan E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rubber-modified polymeric composition and process is disclosed. The rubber-modifying component comprises a grafted rubbery polymer, said grafted rubbery polymer being formed by a process the steps of, the process involving the formation of a hydroperoxidized rubbery polymer intermediate. 33,572-F
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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
- Granted April 10, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2007.
- 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.