Patents by Inventor Vikram S. Patel

Vikram S. Patel 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).

  • Sustained release capsule
    Patent number: 4798725
    Abstract: The invention involves a sustained release pharmaceutical capsule for oral administration comprising, in a capsule shell, a particulate mixture comprising an active drug ingredient which is a weak acid, neutral, or a weak base, polyvinylpyrrolidone, and carboxyvinylpolymer.
    Type: Grant
    Filed: June 16, 1986
    Date of Patent: January 17, 1989
    Assignee: Norwich Eaton Pharmaceuticals, Inc.
    Inventor: Vikram S. Patel
  • Nitrofurantoin dosage form
    Patent number: 4772473
    Abstract: The invention involves a combination sustained release/rapid release pharmaceutical capsule for oral administration of nitrofurantoin comprising, in a capsule shell, a first layer of a first particulate mixture comprising nitrofurantoin, polyvinylpyrrolidone and carboxyvinylpolymer; and a second layer of a second particulate mixture comprising macrocrystalline nitrofurantoin.
    Type: Grant
    Filed: June 16, 1986
    Date of Patent: September 20, 1988
    Assignee: Norwich Eaton Pharmaceuticals, Inc.
    Inventors: Vikram S. Patel, Harry L. Welles