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Expired Canadian patentCanada

Method and device for separating trimming losses of products formed from sheet

CA 1297399 C · Owner: Sakamoto, Nobuyasu · Inventors: Yoshida, Katsuhiko; Okuno, Yoshiharu; Kobayashi, Eiichi

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Abstract From the Canadian patent

A method and device are provided for separating trimming losses from a sheet having a plurality of products formed thereon with star-shaped scraps between the products. In one embodiment the sheet is placed on a sheet supporting plate. The sheet is positioned between a blanking plate and a plurality of pushing rods fixed to a mounting plate. Each of the pushing rods has a piercing pin extending from the free end thereof for penetrating into a corresponding star-shaped scrap. The blanking plate has through holes formed therein which correspond to the pushing rods and star-shaped scraps such that the pushing rod passes through a corresponding through hole. The inner diameter of each through …

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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 March 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 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.
FiledJanuary 13, 1988
GrantedMarch 17, 1992
Term endedMarch 17, 2009
Patent numberCA 1297399 C
Classification (IPC)B26F3/02

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedJan 13, 1988Patent grantedMarch 17, 1992Term endedMarch 17, 2009

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