Expired Canadian patentCanada
New polymerization catalyst
CA 1297092 C · Owner: Turner, Howard William · Inventors: Turner, Howard William
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An olefin polymerization catalyst comprising the reaction product of a metallocene complex of Group IVB YB, VIb, and VIII of, the Periodic Table and dn excess of alumoxane.
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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 March 10, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 10, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 10, 1986
GrantedMarch 10, 1992
Term endedMarch 10, 2009
Patent numberCA 1297092 C
Classification (IPC)C08F4/62 +2 more
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.