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Expired Canadian patentCanada

Mail processing machine

CA 1312381 C · Owner: Kabushiki Kaisha Toshiba · Inventors: Ota, Naoki

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

A mail processing machine for sorting mail according to whether the characters of the destination address are printed or handwritten. The mail processing machine reads information of the surface of the mail and distinguishes the area of the destination address from the area of the sender address. The machine has a recognizer to determine printed or handwritten address according to the dispersion (i.e. the statistical variation) of a characteristic of the letters such as the height of letters, the space between letters or lines etc. In this operation, the recognizer calculates the dispersion using the signals corresponding to only the bottom two lines of the address area, which contain …

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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 5, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 5, 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.
FiledJuly 7, 1988
GrantedJanuary 5, 1993
Term endedJanuary 5, 2010
Patent numberCA 1312381 C
Classification (IPC)B07C1/00 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJuly 7, 1988Patent grantedJan 5, 1993Term endedJan 5, 2010

Sources & verification

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