Patents by Inventor Shyunichi Matsumoto

Shyunichi Matsumoto 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).

  • Electrophotosensitive material and image forming method using the same
    Patent number: 6015646
    Abstract: The present invention provides an electrophotosensitive material comprising a photosensitive layer containing a m-phenylenediamine compound represented by the general formula (1): ##STR1## wherein R.sup.1A and R.sup.1B are the same or different and indicate an alkyl group; and R.sup.1C, R.sup.1D, R.sup.1E and R.sup.1F are the same or different and indicate a hydrogen atom or an alkyl group, which has high sensitivity and issuperior in stability to strong light, durability and heat resistance, and an image forming method capable of realizing more higher speed and more larger energy saving than the prior art.
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: January 18, 2000
    Assignee: Mita Industrial Co., Ltd.
    Inventors: Hiroaki Iwasaki, Yukimasa Watanabe, Sakae Saitoh, Shyunichi Matsumoto, Maki Uchida