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Expired Canadian patentCanada

Distillate fuel production from fischer-tropsch wax

CA 2127010 C · Owner: Exxon Research And Engineering Company · Inventors: Davis, Stephen M.; Ryan, Daniel F.

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

Distillate fuels with excellent cold flow properties are produced from waxy Fischer-Tropsch products by separating the product into a heavier and a lighter fraction, isomerizing the heavier fraction hydrotreating and isomerizing the lighter fraction and recovering, products in jet and diesel fuel ranges.

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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

  • Filed June 29, 1994 and granted November 9, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 29, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2016.
  • 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 29, 1994
GrantedNovember 9, 1999
Term endedJune 29, 2014
Patent numberCA 2127010 C
Classification (IPC)C10G73/44 +2 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedJune 29, 1994Patent grantedNov 9, 1999Term endedJune 29, 2014

Sources & verification

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