Patents by Inventor Donald L. Hendrix

Donald L. Hendrix 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).

  • Device for rejecting pulse repeater deception jamming
    Patent number: 4992793
    Abstract: A device for rejecting pulse repeater deception jamming and post dispensed haff jamming in pulse type tracking radars. By use of a very narrow sampling gate with appropriate thresholding delay and timing, a narrow portion of the target pulse which is in minimum coincidence with the jamming pulse is selected. This selected portion is used to construct a restored duplicate of the target pulse for tracking and display purposes.
    Type: Grant
    Filed: May 9, 1969
    Date of Patent: February 12, 1991
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: James F. Dibrell, Donald L. Hendrix
  • Poison ivy relief composition
    Patent number: 4259318
    Abstract: The enzyme p-Diphenol Oxidase, also known as laccase, is effective in the treatment and/or prevention of poison ivy dermatitis by topical application to one's skin before or after exposure to the poison ivy irritant, urushiol.
    Type: Grant
    Filed: March 2, 1978
    Date of Patent: March 31, 1981
    Assignee: University of Houston, Central Campus
    Inventors: Nanda V. Duhe, Donald L. Hendrix