Patents by Inventor Hiroyuki Sazawa

Hiroyuki Sazawa 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).

  • 3-5 Group compound semiconductor and semiconductor device
    Publication number: 20030080331
    Abstract: A 3-5 group compound semiconductor comprising a conductive substrate and a device layer of a 3-5 group compound semiconductor formed by epitaxial growth on said conductive substrate, which comprises between said conductive substrate and said device layer a pn laminate structure layer having at least one pn junction comprising a p-type layer having p-type conductivity and an n-type layer having n-type conductivity.
    Type: Application
    Filed: October 24, 2002
    Publication date: May 1, 2003
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yoshinobu Ono, Masahiko Hata, Hiroyuki Sazawa