Patents by Inventor Eiko Kamimura

Eiko Kamimura 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).

  • Pressure sensitive copying paper
    Patent number: 4411451
    Abstract: In a pressure sensitive copying paper comprising a color former coated sheet obtainable by coating an aqueous coating color constituted mainly of microcapsules containing a substantially colorless color former and of a protecting agent and a binder, the transferability of the color former onto the color developer coated sheet can be improved by adding a wax to said aqueous coating color in an amount of 3-15% by weight based on the solid content of the coating color.
    Type: Grant
    Filed: August 12, 1981
    Date of Patent: October 25, 1983
    Assignee: Mitsubishi Paper Mills, Ltd.
    Inventors: Toshihiko Matsushita, Sadao Morishita, Eiko Kamimura, Shigetoshi Hiraishi