Patents by Inventor Kouichi Shigeno

Kouichi Shigeno 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).

  • Heat-sensitive recording material
    Patent number: 5607894
    Abstract: The heat-sensitive recording material of the present invention comprises a heat-sensitive recording layer containing at least one resorcylic anilide derivative represented by the following general formula: ##STR1## wherein R.sub.1 represents an alkyl or alkoxy, group having 1 to 4 carbon atoms and R.sub.2 represents a hydrogen atom or an alkyl or alkoxy group having 1 to 4 carbon atoms.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 4, 1997
    Assignee: Asahi Denka Kogyo Kabushiki Kaisha
    Inventors: Mitsuo Akutsu, Nobuhide Tominaga, Keiji Oya, Athuo Tomita, Kouichi Shigeno