Patents by Inventor Grant L. Esser

Grant L. Esser 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 Midazolam
    Patent number: 6512114
    Abstract: The present invention provides a process for the synthesis of Midazolam I from a compound of formula II, using thermodynamic, basic workup conditions. Additional steps to isolate the pure bulk product follow.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: January 28, 2003
    Assignee: Abbott Laboratories
    Inventors: Madhup K. Dhaon, Grant L. Esser, Deborah A. Davis, Ashok V. Bhatia
  • PROCESS FOR THE PREPARATION OF IMIDAZODIAZEPINE INTERMEDIATES
    Publication number: 20010014738
    Abstract: The present invention relates to a process for the synthesis of a compound having the formula I, 1
    Type: Application
    Filed: June 30, 1999
    Publication date: August 16, 2001
    Inventors: MADHUP K. DHAON, PARVIZ LABIB, DEBORAH A. DAVIS, GRANT L. ESSER
  • Process for the preparation of ketorolac tromethamine
    Patent number: 6191285
    Abstract: The present invention provides an improved process for producing ketorolac tromethamine. The preferred method utilizes a three-part solvent system, comprising isopropanol, ethyl acetate and water.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: February 20, 2001
    Assignee: Abbott Laboratories
    Inventors: Grant L. Esser, Marazban H. Vandrevala, Madhup K. Dhaon, Ameen F. Ghannam, Dragan Obradovich