Patents by Inventor Youichi Sone

Youichi Sone 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).

  • Thermal recording material
    Patent number: 5928987
    Abstract: A thermal recording material composed of a support of foamed polystyrene sheet and a thermal color-developing layer formed thereon. It is highly sensitive and superior in image durability, with a low level of fogging by heat. When it is used as labels for polystyrene food containers and packages, it permits their recycling without necessity of removing labels. In addition, it has good water resistance owing to corona treatment on the foamed polystyrene sheet.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: July 27, 1999
    Assignee: Nippon Kayaku Co., Ltd.
    Inventors: Hiroaki Tsugawa, Shin Nozaki, Kaoru Izumi, Chitoshi Imaji, Youichi Sone, Takashi Muroi