Patents by Inventor Katsumi Kuboshima

Katsumi Kuboshima 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).

  • Method of forming colored image by use of inorganic toner, inorganic toner for developing latent electrostatic image, and colored toner image bearing image transfer medium
    Patent number: 5750299
    Abstract: A method of forming a colored image on a heat resistant solid surface by use of a toner-image-layer-bearing image formation medium; a method of forming the toner-image-layer bearing image formation medium; inorganic toners for the formation of inorganic toner image for proposed.
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: May 12, 1998
    Assignee: Ricoh Company, Ltd.
    Inventors: Kouchi Ohshima, Shinichi Kuramoto, Hiromitsu Kawase, Yoichiro Watanabe, Takamichi Enomoto, Masanaga Imamura, Katsumi Kuboshima, Junji Toda
  • Heat-insulating packaging box
    Patent number: 4883196
    Abstract: A packaging box is used for packaging frozen food with an improved heat-insulating property. The movement of air surrounded by a corrugated core of a conventional corrugated card-board is interrupted, thereby enhancing the heat-insulating property. The air is prevented from permeating through the corrugated property. Further in order to improve the heat-insulating property, laminated aluminum foil is used.
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: November 28, 1989
    Assignees: Shizuoka Prefectural Government, Nihon Dimple Carton Co., Ltd.
    Inventors: Eiji Kato, Katsumi Kuboshima, Tomoyuki Kaneko