Patents by Inventor Nancy N. Tsou

Nancy N. Tsou 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).

  • Crystalline imidazole complexes as carbapenem intermediates and synthesis
    Patent number: 6162911
    Abstract: Novel crystalline carbapenem intermediate compounds of formula I: ##STR1## wherein: R.sub.1 represents CH.sub.3 or H and an efficient process for synthesis thereof are described.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: December 19, 2000
    Assignee: Merck & Co., Inc.
    Inventors: Richard G. Ball, Nancy N. Tsou, James A. Mc Cauley, Chunhua Yang, Nobuyoshi Yasuda
  • Unguinol and analogs are animal growth permittants
    Patent number: 5350763
    Abstract: Unguinol is a well-known metabolite of the fungi Aspergillus unguis and Aspergillus nidulans. Unguinol has been found to be an active growth permittant and promotant in animals, in particular, monogastric animals such as chickens. In addition, the fermentation broth also produced the additional known unguinol derivatives of folipastatin and 2-chloro unguinol as well as the novel 4-methyl derivative. All of these compounds are active animal growth permittants. Compositions containing such unguinol derivatives for use as growth permittants and promotants are also disclosed.
    Type: Grant
    Filed: June 11, 1993
    Date of Patent: September 27, 1994
    Assignee: Merck & Co., Inc.
    Inventors: Scott D. Feighner, Gino M. Salituro, Jack L. Smith, Nancy N. Tsou