Catalyst compositions
CA 1313652 C · Owner: Drent, Eit · Inventors: Drent, Eit; Wife, Richard Lewin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel catalyst compositions, comprising a) a palladium compound, b) an anion of an acid with a pKa of less than 6 c) a bidentate ligand of the general formula R1R2M-R-MR3R4 wherein M represents phosphorus, arsenic or antimony R1,R2,R3 and R4 represent hydrocarbyl groups which may or may not be substituted with polar groups and R is a bivalent organic bridging group having at least two carbon atoms in the bridge, and, d) a compound chosen from the group formed by organic nitrites and nitro-compounds.
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
- Granted February 16, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 16, 2010.
- 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.