Patents by Inventor Testsuo Tsuchida

Testsuo Tsuchida 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).

  • Recording material
    Patent number: 5094999
    Abstract: A recording material utilizing the reaction between a colorless or light-colored basic dye and a color acceptor reactive with the basic dye to form a color and forming on the same or different substrate a layer or layers containing the basic dye of the color acceptor conjointly or separately, the recording material being characterized in that the color acceptor is at least one of salicyclic acid derivatives represented by the following formula [I] or polyvalent metal salts thereof ##STR1## wherein Ar, R, X, l and m are defined in the specification.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: March 10, 1992
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Testsuo Tsuchida, Fumio Seyama, Tatsuya Meguro, Mitsuru Kondo