Patents by Inventor Kazuto Tsukinuki

Kazuto Tsukinuki 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).

  • Thermosensitive recording sheet
    Patent number: 5096873
    Abstract: A thermosensitive recording sheet comprising a support and a thermosensitive color developer layer thereon containing a basic leuco dye and an organic color developer, said layer containing a bis-phenyl sulfone compound selected from bis-(3-phenyl-4-hydroxyphenyl)sulfone and bis-(2-methyl-4-hydroxy-5-cyclohexylphenyl)sulfone as the organic color developer.
    Type: Grant
    Filed: April 4, 1990
    Date of Patent: March 17, 1992
    Assignees: Jujo Paper Co., Ltd., Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Toshiaki Minami, Tadakazu Fukuchi, Toshio Kaneko, Fumio Fujimura, Kazuto Tsukinuki, Kazumi Saeki, Akira Shimada
  • Process for the production of penicillanic acid compounds
    Patent number: 4942229
    Abstract: An improved process for the production of penicillic acid compounds, especially chloromethyl ester of penicillin G, penicillin V or sulbactam is disclosed.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: July 17, 1990
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Kazumi Saeki, Masami Hirano, Kunihide Oka, Kazuto Tsukinuki, Setsuo Oikawa