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Expired Canadian patentCanada

Continuous production of glucose isomerase and its use

CA 1054084 A · Owner: Imperial Chemical Industries Limited · Inventors: Meers, John L.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A process for the continuous production of glucose isomers by maintaining a nutrient in the culture medium at a concentration which is limiting to growth. Preferably the growth limiting nutrient is the carbon source. The invention also covers a process for isomerizing glucose to fructose using continuously prepared glucose isomerase. Important conditions for culturing the glucose isomerase producing microorganism are the dissolved oxygen tension and dilution rate.

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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 8, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 8, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMay 8, 1979
Term endedMay 8, 1996
Patent numberCA 1054084 A
Classification (IPC)C12P21/00 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedMay 8, 1979Term endedMay 8, 1996

Sources & verification

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