Expired Canadian patentCanada
Preceramic polymers derived from cyclic silazanes and halogenated disilanes and a method for their preparation
CA 1287432 C · Owner: Haluska, Loren Andrew · Inventors: Haluska, Loren Andrew
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Open the CIPO recordAbstract From the Canadian patent
Novel polymethyl(disilyl)silazanes are prepared from cyclic silazanes and certain halogenated disilanes. Thus the reaction of a mixture of {(CH3)2SiNH}X where x is, 3 and 4, and halogenated mixed disilanes give one of the inventive products.
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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 August 6, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 6, 2008.
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FiledSeptember 24, 1987
GrantedAugust 6, 1991
Term endedAugust 6, 2008
Patent numberCA 1287432 C
Classification (IPC)C08G77/60 +2 more
Timeline
Timeline From CIPO dates
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.