Patents by Inventor George O. Zimmerman

George O. Zimmerman 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: 5399547
    Abstract: The present invention provides a methodology for increasing the critical current density carried by high transition temperature; superconductive materials. The methodology is employed using any Noble metal to form an electrically conductive coating; and is used with any high transition temperature superconductive material conventionally known. The resulting improved superconducting material demonstrates an enhanced critical current density capability in the order of 48%; and substantially decreases the degradation of the critical current density in the presence of an applied magnetic field; and offers a range of other advantages including environmental degradation protection, an increased mechanical strength, and an improved capability for adding electrical contacts.
    Type: Grant
    Filed: September 17, 1993
    Date of Patent: March 21, 1995
    Assignee: Trustees of Boston University
    Inventors: Yehia Z. Negm, George O. Zimmerman, Robert E. Powers, Jr.
  • Patent number: 5376755
    Abstract: A composite lead is provided which electrically links and conducts a current between about 75-80K. and liquid helium temperature of about 4.5K. The composite lead may be employed singly or in multiples concurrently to provide conduction of electrical current from normal conductors and semi-conductors at room temperature to superconductors operating at 4.5K. In addition, a variety of organizationl arrangements and assemblies are provided by which the mechanical strength and electrical reliability of the composite lead is maintained.
    Type: Grant
    Filed: April 10, 1992
    Date of Patent: December 27, 1994
    Assignee: Trustees of Boston University
    Inventors: Yehia Negm, George O. Zimmerman, Robert E. Powers, Jr., Randy J. McConeghy, Alvaro Kaplan
  • Patent number: 5296459
    Abstract: The present invention provides a methodology for forming an electrically conductive contact on the external surface of superconductive materials. The methodology is employed using any Noble metal to form the conductive contact; and is used with any superconductive material conventionally known. The resulting conductive contact provides a low electrical resistance and firm point of electrical junction for the superconductor with any conductive material in any electrical circuit or use.
    Type: Grant
    Filed: June 19, 1992
    Date of Patent: March 22, 1994
    Assignee: Trustees of Boston University
    Inventors: Yehia Negm, George O. Zimmerman, Randy J. McConeghy
  • Patent number: 5131582
    Abstract: A unique class of adhesive alloys and bonding methods for their use are provided which enable the user to join non-conductive materials to themselves or to electrically conductive materials. The bonding alloys have enhanced wetting properties and a melting point less than 100.degree. C. in all instances. The bonding alloys are unusual and advantageous in that they create an intimate, direct, and enduring contact between the materials while minimizing mechanical and chemical stresses.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: July 21, 1992
    Assignee: Trustees of Boston University
    Inventors: Alvaro Kaplan, George O. Zimmerman
  • Patent number: 5098656
    Abstract: A unique class of bonding alloys and methods for their use are provided which enable the user to electrically join superconductive materials to themselves, to normal conductive materials, or to semi-conductors. The bonding alloys have enhanced wetting properties and a melting point less than 100.degree. C. in all instances. The bonding alloys are unusual and advantageous in that they create an intimate, direct, mechanical and electrical contact between the superconductive material and any other electrical conductor while minimizing mechanical and chemical stresses and avoiding alterations to the superconductive material itself.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: March 24, 1992
    Assignee: Trustees of Boston University
    Inventors: George O. Zimmerman, Alvaro Kaplan
  • Patent number: 4966142
    Abstract: A unique class of bonding alloys and methods for their use are provided which enable the user to electrically join superconductive materials to themselves, to normal conductive materials, or to semi-conductors. The bonding alloys have enhanced wetting properties and a melting point less than 100.degree. C. in all instances. The bonding alloys are unusual and advantageous in that they create an intimate, direct, mechanical and electrical contact between the superconductive material and any other electrical conductor while minimizing mechanical and chemical stresses and avoiding alterations to the superconductive material itself.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: October 30, 1990
    Assignee: Trustees of Boston University
    Inventors: George O. Zimmerman, Alvaro Kaplan
  • Patent number: 4837377
    Abstract: A unique class of intinsically magnetic graphite intercalation compounds and methods for their making is provided. These compositions are ferromagnetic, electrical insulators, and rubber-like in consistency. The compositions are useful in a variety of different applications in view of their intrinsic magnetism, electrical resistance, and rubber-like qualities.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: June 6, 1989
    Assignee: Trustees of Boston University
    Inventors: George O. Zimmerman, Abdo K. Ibrahim