Patents by Inventor Marazban H. Vandrevala

Marazban H. Vandrevala 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 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
  • Process for the preparation of nicotinic acids
    Patent number: 5739342
    Abstract: The present invention relates to an improved process for the preparation of nicotinic acids represented by the following structural formula (I): ##STR1## which are prepared by reacting a nicotinic amide compound having the formula: ##STR2## under acidic conditions with a nitrite salt. In the process of the invention have the groups R.sup.1, R.sup.2, and R.sup.3, in the compounds are independently selected from the group consisting of hydrogen, and halogen atoms and R.sup.4 is selected from the group consisting of hydrogen, lower alkyl and aryl. The process provides the nicotinic acid compounds in improved yields.
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: April 14, 1998
    Assignee: Abbott Laboratories
    Inventors: Padam N. Sharma, Marazban H. Vandrevala