Patents by Inventor Hiromitsu Yoshimoto

Hiromitsu Yoshimoto 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).

  • Publication number: 20100073661
    Abstract: An exposure apparatus comprises a stage main body having a mounting surface, and a correcting mechanism that corrects a shape of the mounting surface.
    Type: Application
    Filed: April 13, 2009
    Publication date: March 25, 2010
    Applicant: NIKON CORPORATION
    Inventors: Yuichi Shibazaki, Hiromitsu Yoshimoto
  • Publication number: 20090033907
    Abstract: Devices and methods are disclosed for holding a reticle or analogous object, particularly a planar object. An exemplary reticle-holding device includes a reticle chuck having a reticle-holding surface on which a reticle is placed to hold the reticle. The device includes at least one ultrasonic transducer (as an exemplary vibration-inducing device) sonically coupled to the reticle to excite, whenever the ultrasonic transducer is being energized, a vibrational mode in the reticle or reticle chuck, or both. The vibration mode is sufficient to reduce an adhesion force holding the reticle to the reticle-holding surface. Sonic coupling can be by direct contact with the transducer or across a gap.
    Type: Application
    Filed: July 7, 2008
    Publication date: February 5, 2009
    Inventors: Douglas C. Watson, Christopher S. Margeson, Alton H. Phillips, Hiromitsu Yoshimoto, Noriya Kato
  • Publication number: 20080213679
    Abstract: A pellicle is provided to one end surface of end surfaces of a frame. Another end surface of the end surfaces of the frame has an area that opposes a substrate. A configuration is adopted that prevents the deformation of the one end surface of the frame and the shape of the opposing area on the other end surface from affecting one another.
    Type: Application
    Filed: February 29, 2008
    Publication date: September 4, 2008
    Applicant: NIKON CORPORATION
    Inventors: Tomoki Miyakawa, Hiromitsu Yoshimoto
  • Publication number: 20070292245
    Abstract: A stage assembly (18) that moves a work piece (200) includes a stage base (36), a stage (238), and a stage mover assembly (40) that moves the stage (238) relative to the stage base (36). The stage (238) includes a stage housing (244) and a device holder (242). The stage housing (244) is rigid. The device holder (242) selectively secures the work piece (200) to the stage housing (244). The device holder (242) can included one or more support pairs (250) that clamp the work piece (200) there between to couple the work piece (200) to the stage housing (244). The stage (238) can include one or more resilient supports (258) that support the work piece (200). Further, the support pairs (250) can retain the work piece (200) so that a small fluid gap exists between the work piece (200) and the stage (238) so that the work piece (200) experiences squeeze film damping.
    Type: Application
    Filed: May 24, 2007
    Publication date: December 20, 2007
    Applicant: Nikon Corporation
    Inventors: Alton Phillips, Douglas Watson, Leonard Kho, Hiromitsu Yoshimoto
  • Patent number: 7081946
    Abstract: A reticle holder 18 has; a first suction section 63 facing a precision warrantable area AR1 having a predetermined surface precision, of a lower face Ra of a reticle R; a second suction section 64 facing a precision unwarrantable area AR2 outside of the precision warrantable area AR1; a pore 70a connected to a suction apparatus which draws out gas in a space between the lower face Ra of the reticle R and the first suction section 63, and a pore 70b connected to the suction apparatus 72 which draws out gas in the space between the lower face Ra of the reticle R and the second suction section 64. As a result, the reticle can be held stably, without deteriorating the surface precision of the precision warrantable area.
    Type: Grant
    Filed: August 13, 2003
    Date of Patent: July 25, 2006
    Assignee: Nikon Corporation
    Inventors: Tsuneyuki Hagiwara, Hiromitsu Yoshimoto, Hiroto Horikawa, Hideo Mizutani
  • Publication number: 20060146312
    Abstract: A reticle holder has a first suction section facing a precision warrantable area having a predetermined surface precision, of a lower face of a reticle, a second suction section facing a precision unwarrantable area outside of the precision warrantable area, a pore connected to a suction apparatus that draws out gas in a space between the lower face of the reticle and the first suction section, and a pore connected to the suction apparatus and that draws out gas in the space between the lower face of the reticle and the second suction section. As a result, the reticle can be held stably, without deteriorating the surface precision of the precision warrantable area.
    Type: Application
    Filed: February 23, 2006
    Publication date: July 6, 2006
    Applicant: NIKON CORPORATION
    Inventors: Tsuneyuki Hagiwara, Hiromitsu Yoshimoto, Hiroto Horikawa, Hideo Mizutani
  • Publication number: 20040100624
    Abstract: A reticle holder 18 has; a first suction section 63 facing a precision warrantable area AR1 having a predetermined surface precision, of a lower face Ra of a reticle R; a second suction section 64 facing a precision unwarrantable area AR2 outside of the precision warrantable area AR1; a pore 70a connected to a suction apparatus which draws out gas in a space between the lower face Ra of the reticle R and the first suction section 63, and a pore 70b connected to the suction apparatus 72 which draws out gas in the space between the lower face Ra of the reticle R and the second suction section 64. As a result, the reticle can be held stably, without deteriorating the surface precision of the precision warrantable area.
    Type: Application
    Filed: August 13, 2003
    Publication date: May 27, 2004
    Applicant: NIKON CORPORATION
    Inventors: Tsuneyuki Hagiwara, Hiromitsu Yoshimoto, Hiroto Horikawa, Hideo Mizutani
  • Patent number: 6727981
    Abstract: The illuminating optical system is divided into a first portion including movable blades moving during exposure, and a second portion not containing a movable portion moving over the movable blade during exposure. The second portion is installed on the exposure main portion, and the first portion, separately from the exposure main portion. The frames configuring the first and the second optical units, the second optical unit having optical elements of a smaller movable amount than the movable amount of the movable blades, are relatively displaceably connected via the bellows-shaped member. The frames configuring the second optical units are fixed to each other via the O-ring suppressing relative displacement. As a result, the effect of vibration of the illuminating optical system during exposure on the main portion can be reduced.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: April 27, 2004
    Assignee: Nikon Corporation
    Inventors: Taichi Taniuchi, Kyoji Nakamura, Eizo Ohya, Hiromitsu Yoshimoto
  • Publication number: 20030117600
    Abstract: The illuminating optical system is divided into a first portion including movable blades moving during exposure, and a second portion not containing a movable portion moving over the movable blade during exposure. The second portion is installed on the exposure main portion, and the first portion, separately from the exposure main portion. The frames configuring the first and the second optical units, the second optical unit having optical elements of a smaller movable amount than the movable amount of the movable blades, are relatively displaceably connected via the bellows-shaped member. The frames configuring the second optical units are fixed to each other via the O-ring suppressing relative displacement. As a result, the effect of vibration of the illuminating optical system during exposure on the main portion can be reduced.
    Type: Application
    Filed: December 3, 2002
    Publication date: June 26, 2003
    Applicant: Nikon Corporation
    Inventors: Taichi Taniuchi, Kyoji Nakamura, Eizo Ohya, Hiromitsu Yoshimoto