Patents by Inventor Suzuki Kazumi

Suzuki Kazumi 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).

  • Reversible thermosensitive recording medium and method for producing the medium
    Patent number: 5869422
    Abstract: A reversible thermosensitive recording medium having a supporting substrate and a reversible thermosensitive recording layer formed on the supporting substrate, having the ratio, of two values of light intensity scattered by the recording layer at large angles and small angles, of more than or equal to two, the ratio of the two numbers of particles of low-molecular-weight organic material with the large size to small size, of more than or equal to 2%, and the ratio of the two numbers of the particles with the small size to the total particles, of more than or equal to 10%, is provided which has improved display quality and excellent durability for repeated recording and erasing cycles over an extended period of time.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: February 9, 1999
    Assignee: Ricoh Company, Ltd.
    Inventors: Suzuki Kazumi, Yoshihiko Hotta, Atsushi Kutami, Kunichika Morohoshi, Tetsuya Amano, Toru Nogiwa