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Expired Canadian patentCanada

Baffled glass melting furnaces

CA 1317463 C · Owner: Corning Incorporated · Inventors: Palmquist, Ronald W.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

There is disclosed a glass melting furnace having various forms of baffles located within the melt for dividing the furnace into zones and creating extended flow paths within the furnace for increasing the minimum residence time of the glass within the furnace and thereby improving glass melting and refining.

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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 May 11, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 11, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 9, 1988
GrantedMay 11, 1993
Term endedMay 11, 2010
Patent numberCA 1317463 C
Classification (IPC)C03B5/16 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedMarch 9, 1988Patent grantedMay 11, 1993Term endedMay 11, 2010

Sources & verification

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