Patents by Inventor Keiji Takagi

Keiji Takagi 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: 6875952
    Abstract: Paste comprising metallic organic compound, in particular, gold-based metallic organic compound is used as a conductive material for repairing open defects in a metal pattern. After applying the paste, the paste is baked to deposit a metal film. This can produce a very thin metallic film having low electric resistance. Further, a semiconductor laser is used as a heating unit to heat only the paste applied to the open defect. A heating profile having a multi-step baking process includes a provisional baking and main baking process followed by a cooling process to produce a high-quality thin metallic film having no cracks and a dense texture.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: April 5, 2005
    Assignee: Alps Electric Co., Ltd.
    Inventors: Osamu Sakai, Keiji Takagi
  • Patent number: 6331348
    Abstract: Paste comprising metallic organic compound, in particular, gold-based metallic organic compound is used as a conductive material for repairing the broken defective part and is baked. This can produce a very thin metallic film having low electric resistance. Further, a semiconductor laser is used as a heating unit to heat only the broken defective part, and a heating profile having a baking process of provisional baking and main baking and a cooling process is provided to produce the high-quality thin metallic film having no crack and a dense texture.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: December 18, 2001
    Assignee: Alps Electric Co., Ltd.
    Inventors: Osamu Sakai, Keiji Takagi
  • Publication number: 20010006722
    Abstract: Paste comprising metallic organic compound, in particular, gold-based metallic organic compound is used as a conductive material for repairing the broken defective part and is baked. This can produce a very thin metallic film having low electric resistance. Further, a semiconductor laser is used as a heating unit to heat only the broken defective part, and a heating profile having a baking process of provisional baking and main baking and a cooling process is provided to produce the high-quality thin metallic film having no crack and a dense texture.
    Type: Application
    Filed: December 22, 2000
    Publication date: July 5, 2001
    Applicant: ALPS ELECTRIC CO., LTD
    Inventors: Osamu Sakai, Keiji Takagi