Patents by Inventor Kazuo Hagihara

Kazuo Hagihara 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).

  • Protective coating material for lithographic printing plate
    Patent number: 4095525
    Abstract: A protective coating material for lithographic printing plate, which comprises pullulan or pullulan derivatives. Said material is superior to hitherto used gum arabic solution in the protection of the surface of lithographic printing plate against oxidation and scumming as well as in the ability to enhance the hydrophilic character of metallic surface of a non-image area.
    Type: Grant
    Filed: October 20, 1976
    Date of Patent: June 20, 1978
    Assignees: Sumitomo Chemical Company, Limited, Hayashibara Biochemical Laboratories, Inc.
    Inventors: Norishige Tsukada, Kazuo Hagihara, Kozo Tsuji, Masanori Fujimoto, Tsuneyuki Nagase