Patents by Inventor Shigeshi Yoshinaga

Shigeshi Yoshinaga 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).

  • Method monitoring a quality of electronic circuits and its manufacturing condition and system for it
    Patent number: 6622054
    Abstract: With a view to providing a monitoring system for the quality and manufacturing conditions of electronic circuits capable of facilitating the grasping of correlation's between diverse manufacturing conditions and manufacturing states, statistically characteristic images are selected out of a group of images retrieved from a detection information database by specifying at least one out of the values of feature quantities, design information and manufacturing conditions, and are displayed.
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: September 16, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Hirohito Okuda, Toshifumi Honda, Hisae Yamamura, Yuji Takagi, Hideaki Doi, Shigeshi Yoshinaga