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Expired Canadian patentCanada

Method and materials for the microbial bioconversion of toluene and other phenyl compounds

CA 1337977 C · Owner: Blatt, Lawrence M. · Inventors: Yen, Kwang-Mu; Blatt, Lawrence M.

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Abstract From the Canadian patent

Disclosed and claimed are DNA gene segments biologically functional plasmids and recombinant plasmids and microorganism host cells containing such plasmids all, of which contain toluene monooxygenase genes from Pseudomonas mendocina KR-1 and which are useful in a method for the microbial bioconversion of selected phenyl compounds to selected phenolic compounds. In particular the method is useful for making p-hydroxyphenylacetic acid which is a valuable chemical intermediate in the preparation of certain antibiotics and certain .beta.adrenergic blocking agents.

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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 January 23, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 3, 1989
GrantedJanuary 23, 1996
Term endedJanuary 23, 2013
Patent numberCA 1337977 C
Classification (IPC)C12N15/53 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedApril 3, 1989Patent grantedJan 23, 1996Term endedJan 23, 2013

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