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Expired Canadian patentCanada

Die-casting apparatus

CA 1231825 A · Owner: Ube Industries, Ltd. · Inventors: Dannoura, Sadayuki

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

In a horizontal die clamping and vertical molten metal pouring type molten metal pouring device of the type having a die cavity, a reduced-diameter restricted portion in communication with the lower end of the die cavity and an enlarged-diameter vertical bore in communication with the lower end of the reduced-diameter restricted portion stepped portion is formed in the inner wall surface of a stationary sleeve surrounding the vertical bore.

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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 January 26, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 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 17, 1985
GrantedJanuary 26, 1988
Term endedJanuary 26, 2005
Patent numberCA 1231825 A
Classification (IPC)B22D17/30 +1 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedMay 17, 1985Patent grantedJan 26, 1988Term endedJan 26, 2005

Sources & verification

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