Patents by Inventor Ellison F. Krueger

Ellison F. Krueger 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).

  • Assistive listening device
    Patent number: 5159639
    Abstract: An assistive listening device detachably securable to a temple frame of eyeglasses. A carrier engages the frame and has one or more clips to which the instrument housing attaches. The housing contains a speaker, microphone and amplifier circuitry. The power supply comprises a battery pack accessible through a door in the housing. The device is turned "on" and "off" by a closing or opening of the door. A sound conducting tube carries sound from the speaker to the ear of the wearer.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: October 27, 1992
    Inventors: Clark W. Shannon, Ellison F. Krueger
  • Method for the salvage and restoration of integrated circuits from a substrate
    Patent number: 4270260
    Abstract: Components such as IC's mounted on a substrate such as a PCB are removed from the PCB in a heating apparatus. The heating apparatus has a mounting frame which positions the PCB above an array of infra red heating sources. The method includes the steps of bombarding the PCB with infra red energy which is absorbed and conducted to the solder joints to melt the solder to permit extraction of the components.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: June 2, 1981
    Inventor: Ellison F. Krueger