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Expired Canadian patentCanada

Platinum (0) alkyne complexes and a method for their preparation

CA 1262389 C · Owner: Lo, Peter Yin Kwai · Inventors: Lo, Peter Yin Kwai; Chandra, Grish

CIPO record

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Abstract From the Canadian patent

Abstract, A simplified method of manufacture for platinum (O) alkyne complexes is disclosed, as well as novel platinum (O) alkyne complexes per se. The complexes are made by reacting platinum-vinylsiloxane complexes with alkynes. The complexes are used in hydrosilylation, hydrogenation isomerization and, oligomerization reactions. Curable silicones using these platinum (O) alkyne complexes as curing catalysts are also disclosed.

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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 October 17, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 17, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 13, 1985
GrantedOctober 17, 1989
Term endedOctober 17, 2006
Patent numberCA 1262389 C
Classification (IPC)C07F15/00 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedJune 13, 1985Patent grantedOct 17, 1989Term endedOct 17, 2006

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