Catalyst compositions
CA 2028455 A1 · Owner: Van Broekhoven, Johannes Adrianus Maria · Inventors: Drent, Eit; Miedema, Wiebren Age; Van Broekhoven, Johannes Adrianus Maria
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Catalyst compositions based on:, a) a Group VIII metal compound b) an alkyl ester or an anhydride of a carboxylic acid and, c) a bidentate ligand that can form a complex with the Group VIII metal via two phosphorus, nitrogen or sulphur-containing groups present in the bidentate ligand, are useful for reducing reactor fouling in the copolymerisation of carbon monoxide with one or more olefinically unsaturated compounds. MK1/T1418FF
Read the whole patent
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 October 24, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 24, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 2012.
- 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.