Patents by Inventor Mitsuru Otake

Mitsuru Otake 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).

  • Stripe-shaped color separation filter for image pickup tube and method for manufacturing the same
    Patent number: 4004176
    Abstract: A stripe-shaped color separation filter for use with an image pickup tube is disclosed which is covered at its one surface with a layer of transparent material such as glass or SiO.sub.2 having a surface thereof which is flat enough to be practical for use with the image pickup tube. The layer of glass or SiO.sub.2 is formed on the filter by directly applying melted materials thereon, melting down (sintering) powdered materials, chemical vapor deposition, sputtering, or vacuum deposition.
    Type: Grant
    Filed: September 21, 1973
    Date of Patent: January 18, 1977
    Assignee: Hitachi, Ltd.
    Inventors: Mitsuru Otake, Saburo Nobutoki