Patents by Inventor Hiroyoshi Saitou

Hiroyoshi Saitou 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: 10607978
    Abstract: A semiconductor device, including a first semiconductor chip including a first substrate having a semiconductor larger in bandgap than silicon, the first semiconductor chip being formed with a first FET including a first gate electrode, a first source, and a first drain, a second semiconductor chip including a second substrate having a semiconductor larger in bandgap than silicon, the second semiconductor chip being formed with a second FET having a second gate electrode, a second source, and a second drain, and a third semiconductor chip including a third substrate having silicon, the third semiconductor chip being formed with a MOSFET including a third gate electrode, a third source, and a third drain. The first semiconductor chip and the second semiconductor chip are mounted over a first chip mounting section, and the third semiconductor chip is mounted over a second chip mounting section.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: March 31, 2020
    Inventors: Satoru Akiyama, Hiroyoshi Kobayashi, Hisao Inomata, Sei Saitou
  • Patent number: 4542477
    Abstract: An information retrieval system in which various information is indexed synthetically into such relations as the synonym, the broader term and the narrower term to provide a thesaurus and the words are coded to provide a keyword relation table, an index table and a word table each stored in a memory device respectively so that the desired information retrieval operation may be conveniently performed with use of a computer system. Particularly, a memory capacity even for memory of the thesaurus of large scale may be reduced considerably with simplification of the computer system.
    Type: Grant
    Filed: February 15, 1984
    Date of Patent: September 17, 1985
    Assignee: The President of the Agency of Industrial Science & Technology
    Inventors: Masato Noyori, Hiroyoshi Saitou, Masamitsu Sato, Kiyoshi Kikuchi