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Expired Canadian patentCanada

Pulse combustor and process

CA 2003869 C · Owner: Gas Research Institute · Inventors: Kardos, Peter

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

A pulse combustor having a combined mixing and ignition chamber in communication with a fuel inlet tube and an air inlet tube. A main combustion chamber which first splits into a plurality of downstream combustion chamber branches, each of which further split into a plurality of exhaust tubes. The combustion chamber branches of the main combustion chamber have a slot between them with at least one reinforcing strut secured between the combustion chamber branches within the slot. Each exhaust tube has an exhaust manifold end in communication with an exhaust manifold. A process for pulse combustion in a horizontal pulse combustor having at least one air inlet flapper valve, at least one fuel …

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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 November 24, 1989 and granted November 9, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 24, 2009.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 24, 1989
GrantedNovember 9, 1993
Term endedNovember 24, 2009
Patent numberCA 2003869 C
Classification (IPC)F23C15/00

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedNov 24, 1989Patent grantedNov 9, 1993Term endedNov 24, 2009

Sources & verification

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