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Expired Canadian patentCanada

Oxygen lance and sensing adapter arrangement

CA 1081946 A · Owner: Pullman Berry Company · Inventors: Rymarchyk, Nicholas M.; Meinert, Leo L.

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

The invention is directed to a combination of a lance and nozzle assembly for supplying gas to a basic oxygen furnace. The lance and nozzle include an arrangement to accommodate a sensing device or unit which is adapted to transmitt signals providing information in connection with the refractory or contents of the bath contained wihting the vessel. The arrangement is such that it accommodates the normal expansion and contracction of the lance resulting from the atmosphere within which the lance is utilized.

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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 22, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 22, 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.
FiledOctober 22, 1979
GrantedJuly 22, 1980
Term endedJuly 22, 1997
Patent numberCA 1081946 A
Classification (IPC)F27D3/16

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Application filedOct 22, 1979Patent grantedJuly 22, 1980Term endedJuly 22, 1997

Sources & verification

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