Patents by Inventor Koji Tsushima

Koji Tsushima 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).

  • Patent number: 8764431
    Abstract: In a method for transcripting fine patterns and an apparatus for transcripting fine patterns, the ingress of bubbles is prevented and patterns are transcripted with a high throughput by a relatively compact apparatus. For this purpose, a back surface of a stamper is vacuum sucked and the stamper is brought into close contact with a target of transcription with its surfaces coated with resist and pressure is applied thereto. At this time, the stamper is deformed into a spherical shape or bent to expand the close contact face from a central area to a peripheral area to prevent the ingress of air bubbles into between the target of transcription and the stamper.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: July 1, 2014
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Naoaki Yamashita, Toshimitsu Shiraishi, Koji Tsushima, Masashi Aoki
  • Patent number: 8535035
    Abstract: A fine-structure transfer apparatus has a base plate, a first post and a second post erected on the upper surface of the base plate, an elongated stamper that is fixed at one end to the upper end face of the first post. The stamper is supported at the other end in a vertically movable manner by means of an ascending/descending unit provided on the second post. A transfer element holding stage is provided on the upper surface of the base plate between the first and second posts in a position that corresponds to the position of the lower surface of the elongated stamper where a fine pattern is formed. A pressure-applying unit is provided to reciprocate on the upper surface of the elongated stamper along a longitudinal direction thereof. The transfer apparatus is characterized by the ease with which the stamper can be detached from the transfer element.
    Type: Grant
    Filed: May 26, 2010
    Date of Patent: September 17, 2013
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Kyoichi Mori, Noritake Shizawa, Naoaki Yamashita, Koji Tsushima, Toshimitsu Shiraishi
  • Patent number: 8333915
    Abstract: A fine-structure transfer method in which a fine-featured pattern formed on one of the two surfaces of a stamper is pressed against a coating of a resist on one of the two surfaces of a transfer element so as to transfer the fine-featured pattern to the resist coating, wherein the atmosphere in the space between the stamper and the transfer element is replaced by the vapor of the resist before the stamper is pressed against the transfer element.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: December 18, 2012
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Kyoichi Mori, Naoaki Yamashita, Noritake Shizawa, Koji Tsushima
  • Patent number: 8096800
    Abstract: A fine-structure transfer apparatus includes a stamper, a stage on which to place a transfer element having a coating of resist, and a device for heating the resist coating to be vaporized or a device for supplying a vapor of the resist into a space between the stamper and the transfer element.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: January 17, 2012
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Kyoichi Mori, Naoaki Yamashita, Noritake Shizawa, Koji Tsushima
  • Publication number: 20120007280
    Abstract: A fine-structure transfer method in which a fine-featured pattern formed on one of the two surfaces of a stamper is pressed against a coating of a resist on one of the two surfaces of a transfer element so as to transfer the fine-featured pattern to the resist coating, wherein the atmosphere in the space between the stamper and the transfer element is replaced by the vapor of the resist before the stamper is pressed against the transfer element.
    Type: Application
    Filed: September 21, 2011
    Publication date: January 12, 2012
    Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Kyoichi MORI, Naoaki YAMASHITA, Noritake SHIZAWA, Koji TSUSHIMA
  • Patent number: 8016585
    Abstract: A resin stamper is provided that is intended for use in an optical transfer-based nanostructure transfer apparatus and which is capable of automatic transport and alignment. The resin stamper includes a support member made of a light transmitting material and having mechanical strength, an intermediate layer also made of a light transmitting material, and a patterned resin layer which is also made of a light transmitting material. The support member is larger in size than the intermediate layer and the patterned resin layer. The intermediate layer is more flexible than the patterned resin layer. Also, the patterned resin layer has a pattern of high and low areas formed in a surface thereof that is the obverse of the pattern of high and low areas in a mold.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: September 13, 2011
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Susumu Komoriya, Kyoichi Mori, Noritake Shizawa, Takanori Yamasaki, Tetsuhiro Hatogai, Koji Tsushima
  • Publication number: 20110217479
    Abstract: In a method for transcripting fine patterns and an apparatus for transcripting fine patterns, the ingress of bubbles is prevented and patterns are transcripted with a high throughput by a relatively compact apparatus. For this purpose, a back surface of a stamper is vacuum sucked and the stamper is brought into close contact with a target of transcription with its surfaces coated with resist and pressure is applied thereto. At this time, the stamper is deformed into a spherical shape or bent to expand the close contact face from a central area to a peripheral area to prevent the ingress of air bubbles into between the target of transcription and the stamper.
    Type: Application
    Filed: February 11, 2011
    Publication date: September 8, 2011
    Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Naoaki YAMASHITA, Toshimitsu SHIRAISHI, Koji TSUSHIMA, Masashi AOKI
  • Publication number: 20100303947
    Abstract: A fine-structure transfer apparatus has a base plate, a first post and a second post erected on the upper surface of the base plate, an elongated stamper that is fixed at one end to the upper end face of the first post. The stamper is supported at the other end in a vertically movable manner by means of an ascending/descending unit provided on the second post. A transfer element holding stage is provided on the upper surface of the base plate between the first and second posts in a position that corresponds to the position of the lower surface of the elongated stamper where a fine pattern is formed. A pressure-applying unit is provided to reciprocate on the upper surface of the elongated stamper along a longitudinal direction thereof. The transfer apparatus is characterized by the ease with which the stamper can be detached from the transfer element.
    Type: Application
    Filed: May 26, 2010
    Publication date: December 2, 2010
    Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Kyoichi Mori, Noritake Shizawa, Naoaki Yamashita, Koji Tsushima, Toshimitsu Shiraishi
  • Publication number: 20100289183
    Abstract: The present invention includes the steps of: applying resist to a surface of a disk base material mounted on a base; mounting a stamper on the resist, wherein the stamper includes not only an area larger than the disk base material but also a concavo-convex region between chamfered sections for an inner-diameter section and an outer-diameter section of the disk base material; mounting an elastic plate on the stamper, wherein the elastic plate includes an inner-diameter section and an outer-diameter section smaller than chamfered sections of the inner-diameter section and the outer-diameter section of the disk base material and larger than the concavo-convex region of the stamper; mounting a pressing member on the elastic plate and pressing the elastic plate toward the disk base material; exposing the resist and etching the disk base material using the exposed resist as a mask; and removing the remaining resist from the disk base material.
    Type: Application
    Filed: May 7, 2010
    Publication date: November 18, 2010
    Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Koji TSUSHIMA, Naoaki YAMASHITA, Noritake SHIZAWA, Kyoichi MORI
  • Publication number: 20100219548
    Abstract: A fine-structure transfer method in which a fine-featured pattern formed on one of the two surfaces of a stamper is pressed against a coating of a resist on one of the two surfaces of a transfer element so as to transfer the fine-featured pattern to the resist coating, wherein the atmosphere in the space between the stamper and the transfer element is replaced by the vapor of the resist before the stamper is pressed against the transfer element. Also disclosed is a fine-structure transfer apparatus having at least a stamper and a stage on which to place a transfer element having a coating of a resist, further having a device for heating the resist coating to be vaporized or a device for supplying the vapor of the resist into the space between the stamper and the transfer element.
    Type: Application
    Filed: February 24, 2010
    Publication date: September 2, 2010
    Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Kyoichi MORI, Naoaki YAMASHITA, Noritake SHIZAWA, Koji TSUSHIMA
  • Publication number: 20090123590
    Abstract: A resin stamper is provided that is intended for use in an optical transfer-based nanostructure transfer apparatus and which is capable of automatic transport and alignment. The resin stamper comprises a support member made of a light transmitting material and having mechanical strength, an intermediate layer also made of a light transmitting material, and a patterned resin layer which is also made of a light transmitting material, the support member being larger in size than the intermediate layer and the patterned resin layer, the intermediate layer being more flexible than the patterned resin layer, and the patterned resin layer having a pattern of high and low areas formed in a surface thereof that is the obverse of the pattern of high and low areas in a mold.
    Type: Application
    Filed: November 13, 2008
    Publication date: May 14, 2009
    Inventors: Susumu Komoriya, Kyoichi Mori, Noritake Shizawa, Takanori Yamasaki, Tetsuhiro Hatogai, Koji Tsushima
  • Patent number: 5145134
    Abstract: A tiltable turntable for supporting a display monitor, for example, has a support base, a monitor base, and a post of a substantially H-shaped cross section by which the support base and the monitor base are resiliently coupled to each other for relative tilting and rotational movement. The support base has two spaced stoppers. To assemble the tiltable turntable, the support base and the monitor base are sandwiched by the post, and the support base is turned with respect to the monitor base until a retaining member of the post rides over an inclined surface of one of the stoppers. When the retaining member of the post is positioned between the stoppers, the post is retained between the stoppers against dislodgment from the support base and limits the range of relative rotational movement between the support base and the monitor base. The support base and the monitor base are resiliently held together by the retaining member of the post.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: September 8, 1992
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kimio Hashimoto, Katsuyuki Ikoma, Koji Tsushima