Patents by Inventor Makoto Kotou

Makoto Kotou 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).

  • Semiconductor memory device manufacturing method with fuse cutting performance improved
    Patent number: 6362024
    Abstract: In a method of manufacturing a semiconductor memory device, a first interlayer insulating film is formed to have at least one fuse therein. An etching stopper film is formed on the first interlayer insulating film. A first layer is formed on the etching stopper film. The first layer is etched to the etching stopper film using a first mask. Then, the etching stopper film is etched to produce a fuse cutting window.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: March 26, 2002
    Assignee: NEC Corporation
    Inventors: Makoto Kotou, Shinya Iwasa