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Expired Canadian patentCanada

Mutant of pseudomonas, a strain yzh, and a process for producing 851 yzh nutrient solution by application of the strain

CA 2020633 C · Owner: Yang, Zhenhua · Inventors: Yang, Zhenhua

CIPO record

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Abstract From the Canadian patent

This invention relates to a mutant pseudomonas identified as strain YZH and the use of the strain by means of a fermentation process to produce a single cell protein nutrient solution from plant protein. The resulting nutrient solution is suitable as food for animals and humans and has salutary, effects on animals and humans such as reduced bleeding of the gastric mucosa, stimulating and improving hemogenesis and inhibiting cancer cell growth and traversing the cancer cell into its normal cell. The main characteristics of the strain YZH are that it is a rod light yellow in color has at least, one flagellum, has the ability to reduce nitrate and to liquidize gelatine, is not able to produce …

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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

  • Filed July 6, 1990 and granted August 19, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 6, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2012.
  • 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 6, 1990
GrantedAugust 19, 1997
Term endedJuly 6, 2010
Patent numberCA 2020633 C
Classification (IPC)C12N1/20 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedJuly 6, 1990Patent grantedAug 19, 1997Term endedJuly 6, 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.