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Expired Canadian patentCanada

Transition metal - complex compounds and process for making the same

CA 1183547 A · Owner: Wacker-Chemie Gmbh · Inventors: Schmid, Gunter

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Abstract From the Canadian patent

The invention relates to a novel transition metalcomplex compound of the general formula M55L12Xp wherein, M is a transition metal of one of the subgroups I V, VI, VII, or VIII, of the Periodic System of the Elements L stands for, ligands having electron donor properties X is halogen, and P, is equal to 6 to 20. The novel compounds are prepared by reaction of the complex compounds of the formula LnMXm wherein, n represents an integer from 1 to 5 and m an integer from 1 to, 4, with compounds of the general formula EHRR' or diborane wherein E stands for aluminum or boron R and R ' can be equal, or different, and represent hydrogen or straight-chain or branched chain hydrocarbon radicals …

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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 5, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 5, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 31, 1982
GrantedMarch 5, 1985
Term endedMarch 5, 2002
Patent numberCA 1183547 A
Classification (IPC)C07F1/00 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedMay 31, 1982Patent grantedMarch 5, 1985Term endedMarch 5, 2002

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.