Patents by Inventor Joel J. Friedman

Joel J. Friedman 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 antiulcer agents
    Patent number: 5391752
    Abstract: Anti-ulcer agents having a methylsulfinyl bridge between a substituted pyridine moiety and a substituted benzimidazole moiety are prepared by oxidizing the corresponding compounds, having a methylthio bridge, with magnesium monoperoxyphthalate in a suitable solvent. The reaction may be run in an aromatic hydrocarbon solvent, wherein the product may crystallize out of the reaction solution and may be directly isolated by filtration.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: February 21, 1995
    Assignee: Merck & Co., Inc.
    Inventors: Robert S. Hoerrner, Joel J. Friedman, Joseph S. Amato, Thomas M. Liu, Ichiro Shinkai, Leonard M. Weinstock
  • Process for the preparation of benzylformimidate
    Patent number: 5319122
    Abstract: This invention relates to a novel process for preparing benzylformimidates which are useful in the production of certain carbapenem antibiotics. The process of this invention provides a means of producing a high-yield, high-purity product.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: June 7, 1994
    Assignee: Merck & Co., Inc.
    Inventor: Joel J. Friedman