Patents by Inventor Hiroyuki Katsuki

Hiroyuki Katsuki 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).

  • Recycled paper for electrophotography and image forming method making use of the same
    Patent number: 5403445
    Abstract: A recycled paper for electrophotography has a fine class pulp containing a fine class waste paper pulp. The fine class pulp is in a content of not less than 90% by weight based on the weight of the whole pulp. The recycled paper has a waste paper pulp content of more than 70% by weight based on the weight of the whole pulp.
    Type: Grant
    Filed: March 9, 1993
    Date of Patent: April 4, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshinobu Shimomura, Masahiro Imanishi, Takeo Tsunemi, Hiroyuki Katsuki