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Expired Canadian patentCanada

Structural-shape steel rolling mill and method of operating same

CA 1306124 C · Owner: Kosak, Dietmar · Inventors: Engel, Georg; Kosak, Dietmar

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

The structural steel rolling mill comprises a reversing two high rough rolling mill, at least one universal working rolling mill and at least one flanging edging rolling mill included in a reversing tandem rolling mill group, and a universal finishing rolling mill at the outlet end of the structural steel rolling mill. Without substantial lowering of the throughput of the mill considerable savings of both space and operating expenses are attained. These savings are attained because the reversing tandem group following the rough rolling mill has a universal working rolling mill, a flanging edging rolling mill and the universal finishing rolling mill. By including the universal finishing …

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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 August 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 2009.
  • 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 14, 1987
GrantedAugust 11, 1992
Term endedAugust 11, 2009
Patent numberCA 1306124 C
Classification (IPC)B21B1/08 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedAug 14, 1987Patent grantedAug 11, 1992Term endedAug 11, 2009

Sources & verification

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