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Expired Canadian patentCanada

Apparatus for producing cast products and process therefor

CA 1313446 C · Owner: Asahi Denka Kogyo K. K. · Inventors: Kohno, Hiroshige; Fujishima, Toshiya; Hidawa, Yoshiyuki

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 invention is directed to an apparatus for producing cast products, comprising: a filling unit in which a non-solid material is filled from a filling nozzle into an elastic mold having an open-bag shaped filling section; a solidifying unit in which the filled material is solidified inside the elastic mold; and a withdrawal unit in which a solidified product is withdrawn from inside the elastic mold, wherein the withdrawal unit is constituted by a vacuum suction unit adapted to suck the cast product through an opening of the elastic mold and a vacuum chamber adapted to effect sucking under a vacuum from the side of the elastic mold opposite to the opening thereby expanding the, elastic …

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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 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 9, 2010.
  • 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 30, 1988
GrantedFebruary 9, 1993
Term endedFebruary 9, 2010
Patent numberCA 1313446 C
Classification (IPC)B29C39/22

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedAug 30, 1988Patent grantedFeb 9, 1993Term endedFeb 9, 2010

Sources & verification

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