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Expired Canadian patentCanada

Carbon ignition temperature depressing agents and method of regenerating an automotive particulate trap utilizing said agent

CA 1291106 C · Owner: Ford Motor Company Of Canada, Limited · Inventors: Rao, Vemulapalli Durga Nageswar

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Abstract From the Canadian patent

A carbon ignition temperature depressing agent is disclosed along with a method of regenerating an automotive particulate trap using the ignition temperature depressing agent. The agent is effective to promote oxidation of on-board collected carbonaceous particles extracted from the automobile exhaust. The agent comprises (a) an organometallic compound that upon heating the combustion process of the engine) forms a readily reducible metal oxide which when finely divided promotes a carbonaceous ignition temperature in the range of as low as 450°F and up to as low as 675°F and, (b) an aerosol-promoting liquid carrier effective to form a fine mist with the organometallic compound when sprayed, …

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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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 16, 1985
GrantedOctober 22, 1991
Term endedOctober 22, 2008
Patent numberCA 1291106 C
Classification (IPC)C10L10/06 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedDec 16, 1985Patent grantedOct 22, 1991Term endedOct 22, 2008

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