Apparatus for preparing polyolefin products and methodology for using the same
CA 2500674 C · Owner: Valdez, Gilbert · Inventors: Valdez, Gilbert; Herndon, Daniel; Baxter, C. Edward, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus (202) for olefin polymerization includes a plurality of shell and tube olefin polymerization reactors (202a 202b), each of which has an olefin , polymerization reaction mixture inlet connection and a crude polyolefin product outlet connection (55a, 55b). Each reactor (202a 202b) is equipped , with a recirculation system including a pump (25a 25b) arranged to circulate , a reaction mixture through the tube side of the reactor (202a 202b) , independently of the introduction of olefin polymerization reaction mixture into the reactor (202a, 202b). The apparatus (202) also includes an inlet reaction mixture distribution manifold (215 15a, 15b) and an outlet , polymerization …
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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 14, 2004 and granted June 26, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 14, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 14, 2026.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.