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Expired Canadian patentCanada

Coal/diesel fuel suspension containing wax-like polymers

CA 1180184 A · Owner: Hoechst Ag · Inventors: Hobes, John; Bahadir, Mufit; Materne, Winfried

CIPO record

Overview

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

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Abstract From the Canadian patent

The present invention relates to the stabilization of a carbonaceous combustible solid - diesel fuel suspension by inclusion therein of wax-like polymers in an amount of at least 0.2% by weight of the stabilized suspension. The polymers preferred are homopolymers of .alpha. olefins and copolymers of, ethylene and at least one other monomer copolymerizable therewith wherein the ethylene portion constitutes at least 60% by weight of the copolymer.

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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.
FiledApril 8, 1982
GrantedJanuary 2, 1985
Term endedJanuary 2, 2002
Patent numberCA 1180184 A
Classification (IPC)C10L1/32 +1 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedApril 8, 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.