Patents by Inventor Barry A. Bender

Barry A. Bender 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).

  • Process for making superconducting PBSCCO and PBSCCO parts
    Patent number: 6051534
    Abstract: A process for producing the 2223 phase of (Pb,Bi)SrCaCuO that is much faster than existing processes has the steps of: calcining a precursor powder mixture while maintaining intimate mixing of this precursor mixture by intermediate grindings during calcination; compressing the calcination product into a consolidated body; and heating the calcination product while maintaining intimate mixing of the calcination product, to form essentially phase pure 2223 (Pb,Bi)SrCaCu). A fast process for making a (Pb,Bi)SrCaCuO part with a high J.sub.c has the steps of: pressing calcined and reacted (Pb,Bi)SrCaCuO powder into a green body having the shaped of the part; and sintering the green body for a selected time, most preferably between 6 and 8 hours, that is long enough to establish superconducting electrical contact between grains of (Pb,Bi)SrCaCuO but short enough to prevent void formation or part shape distortion. The part made by this process has a high density, at least about 4 or 5 g/cm.sup.3.
    Type: Grant
    Filed: April 21, 1993
    Date of Patent: April 18, 2000
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Roy Rayne, Louis E. Toth, Barry A. Bender, Steven H. Lawrence
  • Method of thermochemically treating silicon carbide fibers derived from polymers
    Patent number: 5230848
    Abstract: Silicon carbide fibers which are derived from oligomeric and/or polymeric ecursors are modified and strengthened by annealing the silicon carbide fiber at temperatures in excess of 800.degree. C. under a nitrogen atmosphere in the presence of carbon particles. The modified fibers can be used to make ceramic, metal, and plastic composites.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: July 27, 1993
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Jay S. Wallace, Barry A. Bender, Darla Schrodt
  • Machinable oxide ceramic
    Patent number: 5215961
    Abstract: A machinable high Tc ceramic superconductor is formed by weighing and mixing appropriate stoichiometric amounts of Bi.sub.2 O.sub.3, SrCO.sub.3, CaCO.sub.3, and CuO (BSCCO), removing carbonates from the mixture, melting the mixture, casting the melted mixture into a mold, and inducing superconductivity and growth of randomly oriented platelets in the cast.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: June 1, 1993
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Roy J. Rayne, Louis E. Toth, L. David Jones, Robert J. Soulen, Jr., Barry A. Bender
  • Thermochemically treated oligomeric and/or polymeric derived silicon carbide fibers
    Patent number: 5139871
    Abstract: Silicon carbide fibers which are derived from oligomeric and/or polymeric precursors are modified and strengthened in annealing the silicon carbide fiber at temperatures in excess of 800.degree. C. under a nitrogen atmosphere in the presence of carbon particles. The modified fibers can be used to make ceramic, metal, and plastsic composites.
    Type: Grant
    Filed: January 13, 1988
    Date of Patent: August 18, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Jay S. Wallace, Barry A. Bender, Darla Schrodt