Patents by Inventor Roy A. Patchell

Roy A. Patchell 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).

  • Implantable refillable controlled release device to deliver drugs directly to an internal portion of the body
    Patent number: 5836935
    Abstract: An implantable, refillable, rate-controlled drug delivery device, with a hollow reservoir, and a drug delivery tube communicating with the hollow reservoir. The drug delivery tube includes at least one rate-limiting permeable membrane which regulates drug delivery. A method of controlling the delivery of a drug to an internal portion of a body is disclosed.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: November 17, 1998
    Inventors: Paul Ashton, Roy A. Patchell, Jon Cooper, Byron A. Young