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Expired Canadian patentCanada

Wire injection nozzle

CA 1302096 C · Owner: Minerals Technologies Inc. · Inventors: Wirth, Emil Joseph Jr.

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

An injection nozzle for the addition of an agent in wire form directly into the interior of a molten material includes a tip having an axial bore with a terminal opening through which the wire exits the nozzle, the terminal opening having a cross section in the form of a star.

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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 June 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 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.
FiledNovember 20, 1987
GrantedJune 2, 1992
Term endedJune 2, 2009
Patent numberCA 1302096 C
Classification (IPC)C21C7/00

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedNov 20, 1987Patent grantedJune 2, 1992Term endedJune 2, 2009

Sources & verification

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