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Expired Canadian patentCanada

Method in determining primarily the form and/or the position of elongate timber items and apparatus for carrying out the method

CA 1300872 C · Owner: Hans Dutina Research & Development Ab · Inventors: Dutina, Hans

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Abstract From the Canadian patent

Method primarily in scaling, sorting processing, cutting-, up and the like of elongate timber items (1) such as logs, or elements thereof with two substantially parallel longi-, tudinal surfaces achieved by processing preferably during, longitudinal feed of the item including determination of a, given lateral position and/or form of the timber item at at least one position along the item, a cross-section or cross-sectional element, with the aid of sensing means (3). The method is particularly distinguished by the determination taking place with the aid of touch-free distance-sensing means (3) with predetermined measuring directions preferably fixed and discrete, for determining distances to …

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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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 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.
FiledSeptember 28, 1987
GrantedMay 19, 1992
Term endedMay 19, 2009
Patent numberCA 1300872 C
Classification (IPC)G01B21/00 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedSep 28, 1987Patent grantedMay 19, 1992Term endedMay 19, 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.