Patents by Inventor Kristi L. James

Kristi L. James 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).

  • Bonding means and method
    Patent number: 4415115
    Abstract: A new wire bonding capillary design is employed in which the bonding and cutting surfaces of the bonding capillary are separated. The bonding capillary tip has an annular bonding surface and an annular cutting ridge raised from the bonding surface and of smaller diameter.
    Type: Grant
    Filed: June 8, 1981
    Date of Patent: November 15, 1983
    Assignee: Motorola, Inc.
    Inventor: Kristi L. James
  • Metal etch solution and method
    Patent number: 4345969
    Abstract: A solution is disclosed for the one-step etching of a three layer titanium-nickel-copper metallization. The etch solution comprises about 1.8 to 2.0 moles/liter hydrofluoric acid, about 2.5 to 4.0 moles/liter acetic acid, about 8.7 to 9.0 moles/liter nitric acid, and balance water. Use of the solution permits the patterned etching of sequential layers of titanium, nickel, and copper without excessive attack of underlying silicon dioxide layers.
    Type: Grant
    Filed: March 23, 1981
    Date of Patent: August 24, 1982
    Assignee: Motorola, Inc.
    Inventors: Kristi L. James, A. L. Shields