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Expired Canadian patentCanada

Hydrolysis of a partially extracted roasted and ground coffee

CA 1316752 C · Owner: Scoville, Eugene · Inventors: Turek, Evan Joel; Wragg, Anthony; Rankowitz, Marshall Miles

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Abstract From the Canadian patent

A method for solubilizing partially extracted roasted and ground coffee in a fixed bed reactor in the absence of any added acid catalyst is disclosed. The hydrolysis is effective to achieve a soluble solids yield of about 58% to about 68% based on the original roasted and ground coffee and it effects minimal degradation of the soluble solids generated. 30028-F

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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 April 27, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 27, 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.
FiledMay 31, 1988
GrantedApril 27, 1993
Term endedApril 27, 2010
Patent numberCA 1316752 C
Classification (IPC)A23F5/26

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedMay 31, 1988Patent grantedApril 27, 1993Term endedApril 27, 2010

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