Patents by Inventor Yoshinobu Aoyagi

Yoshinobu Aoyagi 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 of producing echelette gratings
    Patent number: 4131506
    Abstract: Disclosed is a method of producing echelette gratings using a beam of electrically charged particles to bomber a masked substrate. The shape and blazed angle ".delta." of the echelette grating is controlled by putting the substrate at a selected slant angle ".theta." with regard to the beam of electrically charged particles.
    Type: Grant
    Filed: December 15, 1976
    Date of Patent: December 26, 1978
    Assignee: Rikagaku Kenkyusho
    Inventors: Susumu Namba, Yoshinobu Aoyagi