Patents by Inventor Shuichi Nagahaka

Shuichi Nagahaka 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: 6548386
    Abstract: Metallic films are formed on a silicon substrate on which an insulation film and a conductive portion are exposed. The metallic films include a first metallic film directly contacting the insulation film and the conductive portion and a second metallic film disposed on the first metallic film as a stress adjustment film to control a stress at an interface between the first metallic film and the underlying member. Accordingly, an adhesion between the first metallic film and the insulation film can be controlled to be smaller than that between the first metallic film and the conductive portion. Then, the metallic film is removed from the insulation film by an adhesive sheet selectively while remaining on the conductive portion. As a result, the metallic film can be patterned stably and readily at low cost.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: April 15, 2003
    Assignee: Denso Corporation
    Inventors: Ichiharu Kondo, Yasuo Ishihara, Shuichi Nagahaka, Takeshi Miyajima