Method for making supported catalyst systems, and catalyst systems therefrom
CA 2204431 C · Owner: Exxon Chemical Patents, Inc. · Inventors: Tormaschy, Kelly; Russell, Kathryn Ann; Brinen, Jeffrey Lawrence
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Catalyst systems and methods for supporting catalysts systems and their components, particularly metallocene catalyst components are provided. The , method involves techniques for evenly distributing a small volume of catalyst component over and among a porous support material. Such even distribution is thought to result in reduced fouling.
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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 November 22, 1995 and granted November 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 22, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 2017.
- 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.