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Expired Canadian patentCanada

Corrosion inhibitor compositions

CA 1085154 A · Owner: Octel America, Inc. · Inventors: Garth, Bruce H.; Schmidt, Francis H.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Improved corrosion inhibitor compositions especially for hydrocarbon fuels are described consisting of mixtures of from about 75 to 95 weight percent of a polymerized unsaturated aliphatic monocarboxylic acid having about 16-18 carbons with about 25 to 5 weight percent of a monoalkeylsuccinic acid wherein the alkenyl group has 8-18 carbons. Also described are concentrates of the above compositions in hydrocarbon solvents and fuels containing the compositions.

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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 9, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 9, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 9, 1977
GrantedSeptember 9, 1980
Term endedSeptember 9, 1997
Patent numberCA 1085154 A
Classification (IPC)C09K15/06 +2 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedFeb 9, 1977Patent grantedSep 9, 1980Term endedSep 9, 1997

Sources & verification

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