Patents by Inventor Keiichiro Kamata

Keiichiro Kamata 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).

  • Contact screen for making color separation halftone blocks
    Patent number: 4342046
    Abstract: A contact screen for making color separation halftone blocks, for use in a picture reproducing machine, wherein a plurality of halftone screens having different screen angles are arranged on a base film in the corresponding positions to color separation reproduction pictures to be reproduced on the base film, and wherein transparent blank spaces are formed between the two adjacent halftone screens.
    Type: Grant
    Filed: August 12, 1980
    Date of Patent: July 27, 1982
    Assignee: Dainippon Screen Seizo Kabushiki Kaisha
    Inventor: Keiichiro Kamata