Patents by Inventor Robert A. Micheli

Robert A. Micheli 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 benzopyrans
    Patent number: 5003090
    Abstract: The invention is directed to a process and intermediates for the preparation of benzopyrans such as racemic-6-acetyl-7-[5-(4-acetyl-3-hydroxy-2-propylphenoxy)pentyloxy]-3, 4-dihydro-2H-1-benzopyran-2-carboxylic acid.
    Type: Grant
    Filed: March 19, 1990
    Date of Patent: March 26, 1991
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Percy S. Manchand, Robert A. Micheli
  • Process for the preparation of benzopyrans
    Patent number: 4931574
    Abstract: The invention is directed to a process and intermediates for the preparation of benzopyrans such as racemic-6-acetyl-7-[5-(4-acetyl-3-hydroxy-2-propylphenoxy)pentyloxy]-3,4-d ihydro-2H-1-benzopyran-2-carboxylic acid.
    Type: Grant
    Filed: August 23, 1988
    Date of Patent: June 5, 1990
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Percy S. Manchand, Robert A. Micheli