Supported catalyst system
CA 2246360 A1 · Owner: Schweier, Gunther · Inventors: Gortz, Hans-Helmut; Schweier, Gunther; Fischer, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Supported catalyst obtainable by A) reacting an inorganic carrier material with a metal compound of the general formula (I): M1(R1)r(R2)s(R3)t(R4)u in which M1 is an alkalyne or alkalyne earth metal or a metal of main group III or IV of the periodic system; R1 is hydrogen C1-C10 alkyl, C6-C15 aryl, alkyl , aryl or aryl alkyl with 1 to 10 C atoms in the alkyl radical and 6 to 20 C atoms in the aryl radical; R2 to R4 are hydrogen C1-C10 alkyl, C6-C15 aryl, alkyl aryl or aryl alkyl alkoxy or dialkylamino with 1 to 10 C atoms in the alkyl radical and 6 to 20 C atoms in the aryl radical; r is a whole number from 1 to 4; and s, t and u are whole numbers from 0 to 3 where the sum , r+s+t+u …
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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 February 19, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 19, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 2019.
- 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
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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.