Patents by Inventor James W. Alpha

James W. Alpha 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).

  • Disk substrate for magnetic memory devices
    Patent number: 5534321
    Abstract: This invention is directed to the fabrication of substrates for rigid information disks for use in a magnetic storage device, the surface of the substrate comprising a smooth area and a low friction area. Conveniently, the substrate will comprise a photonucleable glass wherein the low friction area will have a controlled textured surface.
    Type: Grant
    Filed: January 3, 1994
    Date of Patent: July 9, 1996
    Assignee: Corning Incorporated
    Inventors: James W. Alpha, Nicholas F. Borrelli
  • Magnetic memory storage devices
    Patent number: 4971932
    Abstract: The present invention is related to the fabrication of a magnetic memory storage device consisting essentially of a head pad and a rigid information disk, which disk consists essentially of a rigid substrate having a coating of magnetic media on the surface thereof facing the head pad. More particularly, this invention is directed to a substrate for use in the disk. The substrate is selected from two different groups of glass-ceramics: the first group contains a sheet silicate as the predominant crystal phase; and the second group contains a chain silicate as the predominant crystal phase.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: November 20, 1990
    Assignee: Corning Incorporated
    Inventors: James W. Alpha, Walter L. Morgan, Linda R. Pinckney
  • Encapsulating compositions containing ultra-pure, fused-silica fillers
    Patent number: 4816299
    Abstract: Compositions for encapsulating electronic components are provided which comprise a blend of a curable resin and an ultra-pure silica filler. The filler is composed of fused silica granules which are prepared from a gel of a silicon-containing organic compound, such as TEOS, and which have a uranium content of less than about 0.1 parts per billion and a thorium content of less than about 0.5 parts per billion. The compositions can be readily manufactured in commercial quantities at reasonable costs and are particular well-suite for encapsulating components, such as, high density RAMs, which are sensitive to alpha particles.
    Type: Grant
    Filed: May 20, 1987
    Date of Patent: March 28, 1989
    Assignee: Corning Glass Works
    Inventors: James W. Alpha, Paul M. Schermerhorn, Michael P. Teter
  • Thin silicon film electronic device
    Patent number: 4180618
    Abstract: The present invention is related to the fabrication of electronic devices wherein a thin film of silicon is deposited upon a substrate. More particularly, the invention is directed to such devices wherein the substrate therefor is an alkaline earth metal aluminosilicate glass consisting essentially, by weight, of about 55-75% SiO.sub.2, 5-25% Al.sub.2 O.sub.3, and at least one alkaline earth metal oxide selected from the group consisting of 9-15% CaO, 14-20% SrO, 18-26% BaO, and mixtures thereof in a total amount equivalent on a molar basis to 9-15% CaO.
    Type: Grant
    Filed: July 27, 1977
    Date of Patent: December 25, 1979
    Assignee: Corning Glass Works
    Inventors: James W. Alpha, William H. Dumbaugh, Jr.