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Expired Canadian patentCanada

Sulfurized olefins

CA 1306757 C · Owner: Mobil Oil Corporation · Inventors: Cardis, Angeline Baird; Horodysky, Andrew Gene; Ashjian, Henry

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Sulfurized olefins prepared by reacting a hydrocarbyl olefin with elemental sulfur under rigidly controlled and narrow reaction conditions are very effective non-corrosive extreme pressure/antiwear additive products when incorporated into lubricants and fuels.

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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 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 3, 1986
GrantedAugust 25, 1992
Term endedAugust 25, 2009
Patent numberCA 1306757 C
Classification (IPC)C07C321/12 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedApril 3, 1986Patent grantedAug 25, 1992Term endedAug 25, 2009

Sources & verification

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