Patents by Inventor Larry G. Hamel

Larry G. Hamel 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).

  • Pseudoephedrine dosage form
    Patent number: 4801461
    Abstract: A dosage form is disclosed for delivering the beneficial drug pseudoephedrine to a biological environment of use.
    Type: Grant
    Filed: January 28, 1987
    Date of Patent: January 31, 1989
    Assignee: ALZA Corporation
    Inventors: Larry G. Hamel, Felix A. Landrau, George V. Guittard, Patrick S. L. Wong