Patents by Inventor Edward H. Hadden

Edward H. Hadden 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).

  • Miniaturized valve
    Patent number: 4531547
    Abstract: Miniaturized valves having fast response time and characterized by low power requirements and minimal fluid consumption. A main valve member, which is movable and determines the state of the valve, is responsive to the state of a control member which may be a solenoid operated pilot valve.
    Type: Grant
    Filed: January 17, 1983
    Date of Patent: July 30, 1985
    Inventor: Edward H. Hadden