Patents by Inventor Thomas Zeibig

Thomas Zeibig 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 preparation of indoles
    Patent number: 7858811
    Abstract: A process for the preparation of indoles, e.g. 1,2,3,9-tetrahydro-carbazol-4-one and derivatives thereof.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: December 28, 2010
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Bernhard Knipp, Ralf Kucznierz, Tim Sattelkau, Thomas Zeibig
  • Process for the preparation of indoles
    Publication number: 20070112054
    Abstract: A process for the preparation of indoles, e.g. 1,2,3,9-tetrahydro-carbazol-4-one and derivatives thereof.
    Type: Application
    Filed: November 14, 2006
    Publication date: May 17, 2007
    Inventors: Bernhard Knipp, Ralf Kucznierz, Tim Sattelkau, Thomas Zeibig
  • Methods for the preparation of 4-hydroxy benzothiophene
    Publication number: 20020010345
    Abstract: The present invention is concerned with a novel process for the preparation of the hydroxybenzothiophene of formula I 1
    Type: Application
    Filed: May 8, 2001
    Publication date: January 24, 2002
    Inventors: Bernd Junghans, Michelangelo Scalone, Thomas A. Zeibig
  • Stable mixture for the detection of alkaline phosphatase containing a salt of o-cresolphthalein monophosphoric acid
    Patent number: 5948631
    Abstract: The subject matter of the invention is a stable mixture for the detection of alkaline phosphatase, wherein it contains the N-methylglucamine salt of o-cresolphthalein monophosphoric acid and N-methylglucamine as well as an analytical element for the detection of alkaline phosphatase with a matrix that carries this mixture. In addition the invention concerns a method for the determination of alkaline phosphatase using a salt of o-cresolphthalein monophosphoric acid, wherein the sample is brought into contact with a mixture according to the invention or an analytical element according to the invention and a change in color is observed in the presence of alkaline phosphatase.A subject matter of the invention is also a salt of o-cresolphthalein monophosphoric acid with N-methylglucamine as well as a process for producing such a salt.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: September 7, 1999
    Assignee: Roche Diagnostics GmbH
    Inventors: Rolf Nagel, Steffen Bossert-Reuther, Thomas Zeibig