Patents by Inventor Masuko Itoh

Masuko Itoh 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).

  • Process and apparatus for developing photographs
    Patent number: 4123770
    Abstract: A process and apparatus for developing photographs is provided wherein photographic sensitive material is held in a holding frame. The sensitive material is soaked in a developing solution by positioning the holding frame in a development tank with its upper and lower end faces spaced with predetermined distances, preferably more than 10 millimeters, apart respectively from the upper and bottom surfaces of the development tank. Thereafter the position of the development tank is reversed up and down at predetermined times while the developing-out of the sensitive material is carried out.
    Type: Grant
    Filed: September 15, 1976
    Date of Patent: October 31, 1978
    Inventors: Shiuta Itoh, Masuko Itoh, Masato Kitaura