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Expired Canadian patentCanada

Combustion additive for diesel fuel oil

CA 1180185 A · Owner: Drew Chemical Corporation · Inventors: Pall, Rudy Rosanna L.; Libutti, Bruce L.; Oschell, Francis J.

CIPO record

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Abstract From the Canadian patent

EMO:sa, P/3091, COMBUSTION ADDITIVE FOR DIESEL FUEL OIL Abstract of the Disclosure, The combustion of a diesel fuel oil of a type employed for propulsion of vehicles and ships is improved by the use of an additive comprised of an oil soluble or dispersible calcium compound and an oil soluble or dispersible iron compound. Such improved combustion is evidenced by improved fuel mileage and/or improved smoke suppression and/or improved engine cleanliness and/or improved engine efficiency.

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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 January 2, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 14, 1982
GrantedJanuary 2, 1985
Term endedJanuary 2, 2002
Patent numberCA 1180185 A
Classification (IPC)C10L1/12 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedJan 14, 1982Patent grantedJan 2, 1985Term endedJan 2, 2002

Sources & verification

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