Patents by Inventor James E. Leresche

James E. Leresche 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 preparing 1-(6-methylpyridin-3-yl)-2-[4- (methylsulphonyl)phenyl]ethanone
    Patent number: 7355048
    Abstract: A four-step process for preparing 1-(6-methylpyridin-3-yl)-2-[4-(methylsulfonyl)phenyl]ethanone of the formula: starting from 2-methyl-5-ethylpyridine. 1-(6-Methylpyridin-3yl)-2-[4-(methylsulfonyl)phenyl]ethanone is an intermediate for preparing inhibitors.
    Type: Grant
    Filed: January 6, 2005
    Date of Patent: April 8, 2008
    Assignees: Lonza Ltd., Merck & Co. Inc.
    Inventors: David Kuo, James E. Leresche, Ralf Proplesch, Jean-Paul Roduit, Yves Bessard, Erich Armbruster
  • 1-(6-methylpyridine-3-yl)-2-[4-(methylsulphonyl) phenyl] ethanone and method for its preparation
    Patent number: 7141673
    Abstract: A starting product for the preparation of COX-2 inhibitors, notably the compound 1-(6-methylpyridine-3-yl)-2-[(4-(methylsulfonyl)phenyl]ethanone of the formula (I): A method for making the compound.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: November 28, 2006
    Assignee: Lonza AG
    Inventors: Erich Armbruster, Yves Bessard, David Kuo, James E. Leresche, Ralf Proplesch, Jean-Paul Roduit