Patents by Inventor Selig N. Kaplan

Selig N. Kaplan 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).

  • Patent number: 5164809
    Abstract: Hydrogenated amorphous silicon radiation detector devices having enhanced signal are disclosed. Specifically provided are transversely oriented electrode layers and layered detector configurations of amorphous silicon, the structure of which allow high electric fields upon application of a bias thereby beneficially resulting in a reduction in noise from contact injection and an increase in signal including avalanche multiplication and gain of the signal produced by incoming high energy radiation. These enhanced radiation sensitive devices can be used as measuring and detection means for visible light, low energy photons and high energy ionizing particles such as electrons, x-rays, alpha particles, beta particles and gamma radiation. Particular utility of the device is disclosed for precision powder crystallography and biological identification.
    Type: Grant
    Filed: April 21, 1989
    Date of Patent: November 17, 1992
    Assignee: The Regents of the University of Calif.
    Inventors: Robert A. Street, Victor Perez-Mendez, Selig N. Kaplan
  • Patent number: 5117114
    Abstract: A radiation detector employing amorphous Si:H cells in an array with each detector cell having at least three contiguous layers (n type, intrinsic, p type), positioned between two electrodes to which a bias voltage is applied. An energy conversion layer atop the silicon cells intercepts incident radiation and converts radiation energy to light energy of a wavelength to which the silicon cells are responsive. A read-out device, positioned proximate to each detector element in an array allows each such element to be interrogated independently to determine whether radiation has been detected in that cell. The energy conversion material may be a layer of luminescent material having a columnar structure. In one embodiment a column of luminescent material detects the passage therethrough of radiation to be detected and directs a light beam signal to an adjacent a-Si:H film so that detection may be confined to one or more such cells in the array.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: May 26, 1992
    Assignee: The Regents of the University of California
    Inventors: Robert A. Street, Selig N. Kaplan, Victor Perez-Mendez
  • Patent number: 4785186
    Abstract: Amorphous silicon ionizing particle detectors having a hydrogenated amorphous silicon (a--Si:H) thin film deposited via plasma assisted chemical vapor deposition techniques are utilized to detect the presence, position and counting of high energy ionizing particles, such as electrons, x-rays, alpha particles, beta particles and gamma radiation.
    Type: Grant
    Filed: October 21, 1986
    Date of Patent: November 15, 1988
    Assignee: Xerox Corporation
    Inventors: Robert A. Street, Victor P. Mendez, Selig N. Kaplan
  • Patent number: 4724117
    Abstract: Method and apparatus for highly polarizing a fast beam of particles by collisional pumping, including generating a fast beam of particles, and also generating a thick electron-spin-polarized medium positioned as a target for the beam. The target is made sufficiently thick to allow the beam to interact with the medium to produce collisional pumping whereby the beam becomes highly polarized.
    Type: Grant
    Filed: October 19, 1984
    Date of Patent: February 9, 1988
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: J. Warren Stearns, Selig N. Kaplan, Robert V. Pyle, L. Wilmer Anderson, Lawrence Ruby, Alfred S. Schlachter