Patents by Inventor Shigeo Nakatsuji

Shigeo Nakatsuji 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).

  • Screen printing method and method of producing screen printing plates
    Patent number: 5168805
    Abstract: A screen printing method comprises an aligning process for fixing a master plate (10) to a fixing frame (20) in aligned relation thereto, an exposure process of exposing a screen printing plate (50) through the master plate (10) fixed to the fixing frame (20), a developing process for developing the thus exposed screen printing plate (50), and a printing process for printing a workpiece (80) by using the thus developed screen printing plate (50). In the aligning process, the positioning pins (22a, 22b, 22c) of the fixing frame (20) abut against the positioning protuberances (62a, 62b, 62c) of a fixing block (61). In the exposure process, the positioning pins (22a, 22b, 22c) of the fixing frame (20) abut against the positioning protuberances (32a, 32b, 32c) of a positioning block (3), while the positioning pins (52a, 52b, 52c) of the printing plate (51) holding the screen printing plate (50) abut against the positioning protuberances (62a, 62b, 62c) of the fixing block (61).
    Type: Grant
    Filed: October 23, 1991
    Date of Patent: December 8, 1992
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tohru Kasanami, Shigeo Nakatsuji, Mitsuro Hamuro, Naoto Kimura