Patents by Inventor Masatoshi Shimojima

Masatoshi Shimojima 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 producing solid electrolytic capacitor element
    Patent number: 5818687
    Abstract: A capacitor element for use in a solid electrolytic capacitor is formed by sintering metallic powder inside a porous body to produce a chip member having one end of an anode wire buried inside the chip member. The chip member and the anode wire are welded together by laser irradiation within an atmosphere of an inactive gas or an oxidation-reduction gas to form one or more welded portions where the anode wire emerges from the chip member such that the anode wire is made stronger against bending.
    Type: Grant
    Filed: February 5, 1997
    Date of Patent: October 6, 1998
    Assignee: Rohm Co., Ltd.
    Inventor: Masatoshi Shimojima
  • Zoom lens
    Patent number: 4273414
    Abstract: A mechanism for a zoom lens having relatively movable lens groups where the aperture defining means moves with one of the lens groups.
    Type: Grant
    Filed: December 1, 1978
    Date of Patent: June 16, 1981
    Assignee: Vivitar Corporation
    Inventor: Masatoshi Shimojima
  • Zoom lens with movable diaphragm
    Patent number: 4141636
    Abstract: A mechanism for a zoom lens of the type in which the aperture defining diaphragm mechanism moves axially of the lens and changes the position of the exit pupil, where the mechanism modifies the aperture with changing focal length to maintain constant relative aperture at full relative aperture and further predetermines the stop down of the diaphragm mechanism as a function of selected relative aperture and focal length.
    Type: Grant
    Filed: December 15, 1976
    Date of Patent: February 27, 1979
    Assignee: Vivitar Corporation
    Inventor: Masatoshi Shimojima
  • Zoom lens
    Patent number: 4097124
    Abstract: This disclosure relates to variable focal lens having zooming and compensating groups movable axially in a non-linear relation. A single operating member is rotatable to move the front focusing group without moving the other groups, and movable axially to shift the zooming and compensating groups without moving the focusing group. Axial movement is imparted to the mount for the zooming group, and relative movement of the compensating group is controlled by rotative movement of the zooming group.
    Type: Grant
    Filed: December 28, 1973
    Date of Patent: June 27, 1978
    Assignee: Vivitar Corporation
    Inventors: Rinzo Watanabe, Masatoshi Shimojima