Patents by Inventor Naoko Inatsu

Naoko Inatsu 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: 5935900
    Abstract: The present invention provides a heat sensitive recording material comprising a heat sensitive recording layer formed on a substrate and containing an electron-donating compound and an electron-accepting compound, and a protective layer formed on the recording layer when required, the recording material being characterized in that at least one benzotriazole compound represented by the formula (1) is incorporated into at least one of the heat sensitive recording layer and the protective layer ##STR1## wherein R.sup.1 is C.sub.1.about.4 alkyl, Ar is 1,3-phenylene or 1,4-phenylene.
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: August 10, 1999
    Assignee: Ojl Paper Co., Ltd.
    Inventors: Tatsuya Meguro, Naoko Inatsu, Tetsuo Tsuchida