Patents by Inventor Thomas Clark Powell

Thomas Clark Powell 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).

  • Controlled release potassium tablet
    Patent number: 5651984
    Abstract: A pharmaceutical dosage form is prepared from a multiplicity of coated potassium chloride crystals coated with two distinct layers, the first of ethylcellulose and the second of a hydrophilic coating polymer, preferably hydroxypropylcellulose, resulting in microcapsules. These microcapsules are capable of being compressed into tablets of suitable hardness and friability with minimum quantities of excipients. The resultant controlled release tablets are useful for treatment of potassium deficiencies in humans.
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: July 29, 1997
    Assignee: Eurand America, Incorporated
    Inventor: Thomas Clark Powell