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Expired Canadian patentCanada

Cogeneration from glass furnace waste heat recovery

CA 1233813 A · Owner: Owens-Illinois, Inc. · Inventors: Sturgill, Dennis T.

CIPO record

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

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Abstract From the Canadian patent

There is disclosed an apparatus and method of recovering a portion of the waste heat produced in a high temperature industrial process,such as a glass melting furnace,where the furnace has at least a pair of regenerators which are alternately used to preheat the combustion air and serve as hot exhaust heat storage means. The hot exhaust gases from the process are passed through a heat exchanger where the heat is indirectly transferred to the clean compressed air at 100 psi from the compressor of a Brayton cycle energy recovery system with the hot compressed air being expanded in a high performance turbine. The exhaust from the turbine will be at atmospheric pressure and at a temperature …

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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 March 8, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 8, 2005.
  • 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 15, 1984
GrantedMarch 8, 1988
Term endedMarch 8, 2005
Patent numberCA 1233813 A
Classification (IPC)C03B5/16 +1 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedNov 15, 1984Patent grantedMarch 8, 1988Term endedMarch 8, 2005

Sources & verification

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