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Expired Canadian patentCanada

Stable liquid antimony organic sulfur-containing compounds

CA 1108173 A · Owner: Dart Industries Inc. · Inventors: Dieckmann, Dale J.

CIPO record

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Abstract From the Canadian patent

Liquid antimony organic sulfur-containing compounds are rendered stable at ambient conditions by incorporating an effective amount of a phenol. Liquid antimony organic sulfur-containing compounds such as antimony mercaptoacid esters and the, like, are also rendered shelf stable by phenols such as catechol t-butyl catechol and butylated hydroxy anisole. The stable liquid compositions contribute to the heat stability of vinyl halide resins.

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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 September 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 1998.
  • 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 9, 1978
GrantedSeptember 1, 1981
Term endedSeptember 1, 1998
Patent numberCA 1108173 A
Classification (IPC)C07F9/90 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedJune 9, 1978Patent grantedSep 1, 1981Term endedSep 1, 1998

Sources & verification

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