Patents by Inventor Toshishige Yamada

Toshishige Yamada 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).

  • Atomic-level electronic network and method of fabrication
    Patent number: 6331454
    Abstract: An insulated lattice is prepared with a plurality of lattice oriented atoms to create a substantially planar surface having a lattice arrangement. Any unsatisfied chemical bonds are terminated along the substantially planar surface by placing atoms at the site of the unsatisfied chemical bonds to terminate the unsatisfied chemical bonds and insulate the surface to form a platform. In one aspect of the invention, the insulator atoms are removed at predetermined locations. Atoms to form the atomic chain are placed at predetermined locations on the insulated lattice platform to form a first atomic chain which behaves as one of a conductor, a semiconductor and an insulator. A second atomic chain is also placed at predetermined locations on the insulated lattice platform so that the second chain behaves as another of a conductor, a semiconductor and an insulator.
    Type: Grant
    Filed: February 10, 1999
    Date of Patent: December 18, 2001
    Assignees: Board of Regents of the Leland Stanford Junior University, Research Development Corp
    Inventors: Toshishige Yamada, Yoshihiro Takiguchi, Dehuan Huang, Yoshihisa Yamamoto
  • Method of fabrication of atomic chain circuit network
    Patent number: 5981316
    Abstract: An insulated lattice is prepared with a plurality of lattice oriented atoms to create a substantially planar surface having a lattice arrangement. Any unsatisfied chemical bonds are terminated along the substantially planar surface by placing atoms at the site of the unsatisfied chemical bonds to terminate the unsatisfied chemical bonds and insulate the surface to form an insulated lattice platform. Atoms are placed at predetermined locations on the insulated lattice platform to form a first atomic chain which behaves as one of a conductor, a semiconductor and an insulator. A second chain of atoms is also placed at predetermined locations on the insulated lattice platform so that the second chain behaves as another of a conductor, a semiconductor and an insulator. These placements are made such that the second chain of atoms is electrically coupled to the first chain of atoms, and the second chain of atoms behaves differently than the first chain of atoms.
    Type: Grant
    Filed: November 8, 1994
    Date of Patent: November 9, 1999
    Assignees: The Board of Trustees of the Leland Stanford Junior University, Research Development Corporation of Japan
    Inventors: Toshishige Yamada, Yoshihiro Takiguchi, Dehuan Huang, Yoshihisa Yamamoto