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Expired Canadian patentCanada

Method for quantitatively determining fat in a fat- containing sample

CA 1190409 B · Owner: Dickey-John Corporation · Inventors: Nexo, Sten A.; Andersen, Henrik R.

CIPO record

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Abstract From the Canadian patent

A method is provided for quantitative measurement of fat in a fat-containing sample by an infrared absorption technique comprising transmitting infrared light through the sample deter-, mining the infrared absorption of the sample in a waveband characteristic of saturated carbon-hydrogen bonds and selectively quan-, titatively assessing the fat content of the sample on the basis of said determination. This method appears to be more accurate and reliable than similar techniques relying on carbonyl absorption bands.

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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 4, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 4, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 5, 1979
GrantedMay 4, 1982
Term endedMay 4, 1999
Patent numberCA 1190409 B
Classification (IPC)G01N21/25 +1 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedDec 5, 1979Patent grantedMay 4, 1982Term endedMay 4, 1999

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