Patents by Inventor Stephane Mischler

Stephane Mischler has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the production of 6-hydroxynicotinic acid
    Patent number: 5082777
    Abstract: Process for the production of 6-hydroxynicotinic acid from nicotinic acid. The hydroxylation is carried out enzymatically in the presence of a microorganism of the species Pseudomonas, Bacillus or Achromobacter, for example, Achromobacter xylosoxydans. Preferably the enzymatic hydroxylation is carried out at 20.degree. to 40.degree. C. and a pH of 5.5 to 9.0 under aerobic conditions. Also, preferably a 0.1 percent by weight solution up to a saturated (preferably a 0.5 to 10 percent by weight) nicotine acid solution is used.
    Type: Grant
    Filed: February 14, 1985
    Date of Patent: January 21, 1992
    Assignee: Lonza Ltd.
    Inventors: Pavel Lehky, Hans Kulla, Stephane Mischler