Patents by Inventor Kenji Uematu

Kenji Uematu 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).

  • Thermosensitive recording material
    Patent number: 5137864
    Abstract: A thermosensitive recording material comprising a support, an intermediate layer including a foamed portion with minute voids on the support, and a thermosensitive coloring layer formed on the intermediate layer is disclosed, which is particularly improved in such a manner that the voidage of the upper portion of the intermediate layer close to the thermosensitive coloring layer is smaller than the voidage of the lower portion of the intermediate layer close to the support, or the voidage of the intermediate layer is increased from the upper portion thereof towards the lower portion thereof.
    Type: Grant
    Filed: January 30, 1990
    Date of Patent: August 11, 1992
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroshi Yaguchi, Hisashi Sakai, Kenji Uematu, Kanjiro Kawasaki
  • Thermosensitive recording material
    Patent number: 4916111
    Abstract: A thermosensitive recording material comprising a support, an intermediate layer including a foamed portion with minute voids on the support, and a thermosensitive coloring layer formed on the intermediate layer is disclosed, which is particularly improved in such a manner that the voidage of the upper portion of the intermediate layer close to the thermosensitive coloring layer is smaller than the voidage of the lower portion of the intermediate layer close to the support, or the voidage of the intermediate layer is increased from the upper portion thereof towards the lower portion thereof.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: April 10, 1990
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroshi Yaguchi, Hisashi Sakai, Kenji Uematu, Kanijiro Kawasaki