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Expired Canadian patentCanada

Liner for the outlet port of a rod mill

CA 1233151 A · Owner: Kawasaki Jukogyo Kabushiki Kaisha · Inventors: Kogumazaka, Shinji; Hagiwara, Tatsuo; Nagoaka, Shigenori

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

A liner for the outlet port of a rod mill including a cylindrical body which projects outwardly through an outlet port and which is provided on the peripheral edge of the opening of the liner. The projecting length of the cylindrical body on the side close to the end portion of the barrel of the rod mill is preferably longer than that on the opposite side.

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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 February 23, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 23, 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.
FiledMay 28, 1985
GrantedFebruary 23, 1988
Term endedFebruary 23, 2005
Patent numberCA 1233151 A
Classification (IPC)B02C17/22

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedMay 28, 1985Patent grantedFeb 23, 1988Term endedFeb 23, 2005

Sources & verification

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