Patents by Inventor John P. Eblen, Jr.

John P. Eblen, Jr. 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).

  • Hydrogen contamination monitoring and sensor evaluation system
    Patent number: 6734975
    Abstract: A hidrogen detection system (14) includes a hydrogen sensor(16) that detects contamination within a reaction member and generates a hydrogen contamination signal. A surface spectroscopic system (18) is operational in conjuction with the hydrogen sensor (16) and determines contamination of the hydrogen sensor (16) and generates a sensor contamination signal. A controller (20) is electrically coupled to the hydrogen sensor (16) and the surface spectroscopic system (18) and compares the hydrogen contamination signal to the sensor contamination signal and generates a corrected hydrogen contamination signal.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: May 11, 2004
    Assignee: The Boeing Company
    Inventors: John P. Eblen, Jr., Jeffrey H. Hunt, Albert D. Tomassian
  • Inorganic thin film compensator for improved gray scale performance in twisted nematic liquid crystal displays and method of making
    Patent number: 5638197
    Abstract: An optical O-plate compensation device, in accordance with the invention, uses an inorganic thin film which is grown by physical vapor deposition at oblique incidence. The resulting thin film exhibits a biaxial form birefringence and performs, in a liquid crystal display (LCD), in a similar manner to uniaxial films with its extraordinary axis oriented obliquely at about 45.degree. with respect to the surface of the film. The invention makes possible a significant improvement in the gray scale properties and contrast ratios of liquid crystal displays (LCDs) over a wide range of viewing angles.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: June 10, 1997
    Assignee: Rockwell International Corp.
    Inventors: William J. Gunning, III, Bruce K. Winker, Donald B. Taber, Paul H. Kobrin, James C. Beedy, John P. Eblen, Jr.
  • Compensator for liquid crystal display, having two types of layers with different refractive indices alternating
    Patent number: 5196953
    Abstract: A liquid crystal display includes a polarizer layer, an analyzer layer, a liquid crystal layer disposed between the polarizer layer and the analyzer layer, a first electrode proximate to a first major surface of the liquid crystal layer, and a second electrode proximate to a second major surface of the liquid crystal layer. The first and second electrodes are adapted to apply a voltage across the liquid crystal layer when the electrodes are connected to a source of electrical potential. A multilayer thin film compensator is disposed between the polarizer layer and the analyzer layer, the multilayer compensator including a first plurality of layers, each having a first refractive index and a first thickness, alternating with a second plurality of layers, each having a second refractive index and a second thickness.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: March 23, 1993
    Assignee: Rockwell International Corporation
    Inventors: Pochi A. Yeh, William J. Gunning, John P. Eblen, Jr., Mohsen Khoshnevisan