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Expired Canadian patentCanada

Stable two package water emulsions of silicone hydride fluids

CA 1319455 C · Owner: Traver, Frank John · Inventors: Traver, Frank John

CIPO record

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Abstract From the Canadian patent

An emulsion where water is a continuous phase and having a discontinuous oil phase comprising: (a) silicone hydrides containing units of the formula: RaHbSiO(4-a-b)/2, where a may be 0, 1 or 2; b may be 1 or 2; a+b may be 1 2, or 3: R is a substituted or unsubstituted hydrocarbon radical of 1 to 12 carbon atoms; and, (b) hydroxy substituted silicone containing units of the formula:, Rc(OH)dSiO(4-c-d)/2, wherein c is 1 2, or 3; d is 1 or 2; c+d may be 2, 3, or 4; and R is substituted or unsubstituted hydrocarbon radical of from 1 to 12 carbon atoms.

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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 June 22, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 22, 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.
FiledOctober 13, 1988
GrantedJune 22, 1993
Term endedJune 22, 2010
Patent numberCA 1319455 C
Classification (IPC)C08L83/04 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedOct 13, 1988Patent grantedJune 22, 1993Term endedJune 22, 2010

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