Patents by Inventor Pijush K. Chakraborty

Pijush K. Chakraborty 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 dosage forms
    Patent number: 4789549
    Abstract: A unique sustained release dosage form which prevents the tendency of an initial surge of medicament in the first hour of administration. The control is by a porous membrane coating. The amount of initial release can be varied by varying the proportions of the components of the coatings.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: December 6, 1988
    Assignee: Warner-Lambert Company
    Inventors: Sadath U. Khan, Pijush K. Chakraborty, Albert T. Grabowski, Reginald Phillips