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Expired Canadian patentCanada

Apparatus for pyrolyzing organic solid waste

CA 1081646 A · Owner: Occidental Petroleum Corporation · Inventors: Choi, Charles; Tassoney, Joseph; Gundzik, Richard M.

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Abstract From the Canadian patent

Abstract of the Disclosure, Apparatus for carrying out an essentially closed loop pyrolysis process includes a pyrolysis reactor, a first collection vessel in which char separated from the products of the reactor is deposited a cross connection, from the first collection vessel to a char burner a second collection vessel, in which the particulate heat source produced by the char burner is deposited and a cross connection from the second collection vessel to the reactor. A higher pressure is established at the outlet of each collection vessel than the pressure at the inlet to which it is cross connected. Specifically each, collection vessel comprises a hopper a standpipe extending downwardly …

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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 July 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 15, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 10, 1976
GrantedJuly 15, 1980
Term endedJuly 15, 1997
Patent numberCA 1081646 A
Classification (IPC)C10B49/16

Timeline

Timeline From CIPO dates

1977198019831986198919921995Application filedAug 10, 1976Patent grantedJuly 15, 1980Term endedJuly 15, 1997

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