Patents by Inventor Horst Ralf Staudenmaier

Horst Ralf Staudenmaier 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).

  • Fermentative preparation of 2,5-dihydroxyphenylacetic acid with Beauveria
    Patent number: 5955328
    Abstract: The present invention relates to a novel process for the preparation, by fermentation, of compounds of the formula I ##STR1## where R.sup.1 is hydrogen, fluorine, chlorine or bromine.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: September 21, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Ralf Staudenmaier, Bernhard Hauer, Wolfgang Ladner, Ursula Mueller, Uwe Pressler, Joachim Meyer
  • Process for the hydroxylation of aromatic acids using strains of the fungus Beauveria
    Patent number: 5928912
    Abstract: A process for hydroxylating compounds of the formula ##STR1## where n, A and R.sup.1 to R.sup.4 have the meanings stated in the description, with the aid of microorganisms of the genus Beauveria.
    Type: Grant
    Filed: December 4, 1995
    Date of Patent: July 27, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Ladner, Horst Ralf Staudenmaier, Bernhard Hauer, Ursula Mueller, Uwe Pressler, Joachim Meyer, Hardo Siegel
  • Biotechnological perparation of alcohols, aldehydes and carboxylic acids
    Patent number: 5753471
    Abstract: A process for the biotechnological preparation of alcohols, aldehydes and carboxylic acids by oxidation of compounds of the formula R.sup.1 --C(CH.sub.3).dbd.CR.sup.2 R.sup.3, where R.sup.1, R.sup.2 and R.sup.3 have the meanings indicated in the description, with the aid of microorganisms is described.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: May 19, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Uwe Pressler, Friedhelm Balkenhohl, Bernhard Hauer, Wolfgang Ladner, Ursula Schnell, Horst Ralf Staudenmaier
  • Preparation of 2-hydroxyphenylacetic acid by fermentation
    Patent number: 5739017
    Abstract: 2-hydroxyphenylacetic acid is prepared from phenylacetic acid by fermentation with suitable microorganisms.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: April 14, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Ralf Staudenmaier, Bernhard Hauer, Wolfgang Ladner, Ursula Mueller, Uwe Pressler, Joachim Meyer
  • Preparation of enantiomerically pure lactams
    Patent number: 5663329
    Abstract: A process for preparing enantiomerically pure lactams of the formula I ##STR1## where R.sup.1 and R.sup.2 are each, independently of one another, H, unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl, unsubstituted or substituted C.sub.2 -C.sub.4 -alkenyl, unsubstituted or substituted aryl, (CH.sub.2).sub.n --COOH with n=0, 1, 2, 3, and X is 1, 2, 3, 4, 5, from a racemate of the formula I by. allowing a biocatalyst which selectively converts one enantiomer from I to act on the racemic mixture of I, and isolating the unconverted enantiomer from the resulting mixture of products.
    Type: Grant
    Filed: April 30, 1996
    Date of Patent: September 2, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Ralf Staudenmaier, Bernhard Hauer, Friedhelm Balkenhohl, Wolfgang Ladner, Ursula Schnell, Uwe Pressler
  • Preparation of 3-hydroxyphenylacetic acid
    Patent number: 5639643
    Abstract: The invention relates to a novel process for preparing 3-hydroxyphenylacetic acid by cultivating a fungus of the genus Rhizoctonia, Ceratobasidium and Pellicularia in the presence of a phenyl compound of the formula I ##STR1## where X is COOR, CH.sub.2 OH, CH.sub.2 NH.sub.2 or ##STR2## R is methyl, ethyl, hydrogen, sodium, potassium or ammonium.
    Type: Grant
    Filed: January 2, 1996
    Date of Patent: June 17, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Ralf Staudenmaier, Bernhard Hauer, Wolfgang Ladner, Ursula Mueller, Uwe Pressler, Joachim Meyer