Patents by Inventor Yasuaki Yokoyama

Yasuaki Yokoyama 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: 9513567
    Abstract: To provide a mask aligner that can appropriately manage very small-quantity production and multiproduct production. The present invention is a mask aligner 1 that exposes a wafer W in a predetermined size through a mask M, and has a configuration that includes: a conveying device 5 for conveying the wafer W and the mask M; an exposure stage 3f on which the wafer W conveyed by the conveying device 5 is installed; a mask holder 3b that is mounted to face the exposure stage 3f and on which the mask M conveyed by the conveying device 5 is installed; and an LED light source 8c mounted to face the exposure stage 3f via the mask holder 3b.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: December 6, 2016
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Shiro Hara, Sommawan Khumpuang, Yoshiki Inuzuka, Yasuaki Yokoyama
  • Publication number: 20140320840
    Abstract: To provide a mask aligner that can appropriately manage very small-quantity production and multiproduct production. The present invention is a mask aligner 1 that exposes a wafer W in a predetermined size through a mask M, and has a configuration that includes: a conveying device 5 for conveying the wafer W and the mask M; an exposure stage 3f on which the wafer W conveyed by the conveying device 5 is installed; a mask holder 3b that is mounted to face the exposure stage 3f and on which the mask M conveyed by the conveying device 5 is installed; and an LED light source 8c mounted to face the exposure stage 3f via the mask holder 3b.
    Type: Application
    Filed: December 4, 2012
    Publication date: October 30, 2014
    Applicant: National Institute of Advanced Industrial Science and Technology
    Inventors: Shiro Hara, Sommawan Khumpuang, Yoshiki Inuzuka, Yasuaki Yokoyama
  • Publication number: 20090142617
    Abstract: A composition for forming a silicon.aluminum film, containing a silicon compound and an aluminum compound. The silicon.aluminum film is obtained by forming a coating film of the above composition and treating it with heat and/or light.
    Type: Application
    Filed: February 3, 2009
    Publication date: June 4, 2009
    Applicant: JSR CORPORATION
    Inventors: Yasuaki YOKOYAMA, Michiko Yokoyama, Naomi Shinoda, Risa Yokoyama, Yasuo Matsuki
  • Patent number: 7429778
    Abstract: There is provided a method for forming wiring or an electrode by coating a substrate with a composition comprising (A) a complex of an amine compound and a hydrogenated aluminum compound and (B) a titanium compound or a composition comprising the complex and (C) metal particles and subjecting the obtained coating film to heating and/or a light treatment. By the method, a film can be formed that uses a conductive film forming composition with which wiring and an electrode that can be suitably used for electronic devices can be formed easily and inexpensively.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: September 30, 2008
    Assignees: JSR Corporation, Sharp Corporation
    Inventors: Michiko Yokoyama, legal representative, Naomi Shinoda, legal representative, Risa Yokoyama, legal representative, Isamu Yonekura, Takashi Satoh, Tamaki Wakasaki, Yasumasa Takeuchi, Masayuki Endo, Yasuaki Yokoyama
  • Publication number: 20070135543
    Abstract: [Problem] To provide an adhesive composition which is used for fixing a semiconductor wafer or the like onto a substrate, exhibits firm adhesion with high heat resistance in the wafer grinding stage and is melted by heating to enable easy peeling after the completion of the wafer grinding stage. [Means to solve problem] The hot-melt adhesive composition of the invention is a composition containing as a main component a crystalline compound having a melting temperature of 50 to 300° C., and has a melting temperature width of not more than 30° C. and a melt viscosity of not more than 0.1 Pa·s. The crystalline compound as a main component is desired to be an organic compound composed of elements of C, H and O only and having a molecular weight of not more than 1000, preferably an aliphatic compound or an alicyclic compound, particularly preferably a compound having a steroid skeleton and/or a hydroxyl group.
    Type: Application
    Filed: November 25, 2004
    Publication date: June 14, 2007
    Applicant: JSR CORPORATION
    Inventors: Kyouyu Yasuda, Nobuyuki Itou, Yasuaki Yokoyama, Michiko Yokoyama
  • Publication number: 20070082965
    Abstract: It is an object of the present invention to provide a novel photo-curing composition which can be cured by light of a wide wavelength region including ultraviolet light or visible light, has such high sensitivity that it can be sufficiently cured by exposure to a small amount of light, can favorably form a fine pattern when used as a resist and provides a cured product having excellent heat resistance and insulating properties, and a negative photoresist composition using the photo-curing composition. It is another object of the present invention to provide a process for highly accurately and easily producing a polyimide thin film used for a medical instrument, and a medical instrument having the polyimide thin film. The photo-curing composition of the present invention comprises (A) a carbon cluster and/or its derivative, having a photosensitizing function, (B) a compound having plural heterocyclic rings in a molecule, and if necessary, (C) a photo-insensitive resin.
    Type: Application
    Filed: November 13, 2003
    Publication date: April 12, 2007
    Applicant: JSR Corporation
    Inventors: Kyouyu Yasuda, Yasuaki Yokoyama, Michiko Yokoyama, Naomi Shinoda, Risa Yokoyama, Nobuo Bessho
  • Patent number: 7186448
    Abstract: The present invention relates to a method of temporarily and firmly fixing two solids to each other and to a composition used in the method, which is a method of temporarily fixing, comprising temporarily fixing the two solids to each other with a liquid crystal compound or a composition comprising the liquid crystal compound. This method is used for a method of temporarily fixing a pad for chemical mechanical polishing, for example, to polish a wafer for a semiconductor device fixed on a surface of a base plate, when one solid is a pad for chemical mechanical polishing of a wafer for a semiconductor device and the other is a base plate to fix the pad.
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: March 6, 2007
    Assignee: JSR Corporation
    Inventors: Yasuaki Yokoyama, Nobuo Bessho, Masaaki Hanamura
  • Publication number: 20060275939
    Abstract: The present invention relates to a method of temporarily and firmly fixing two solids to each other and to a composition used in the method, which is a method of temporarily fixing, comprising temporarily fixing the two solids to each other with a liquid crystal compound or a composition comprising the liquid crystal compound. This method is used for a method of temporarily fixing a pad for chemical mechanical polishing, for example, to polish a wafer for a semiconductor device fixed on a surface of a base plate, when one solid is a pad for chemical mechanical polishing of a wafer for a semiconductor device and the other is a base plate to fix the pad.
    Type: Application
    Filed: August 10, 2006
    Publication date: December 7, 2006
    Applicant: JSR Corporation
    Inventors: Yasuaki Yokoyama, Nobuo Bessho, Masaaki Hanamura
  • Publication number: 20060257667
    Abstract: A composition for forming a silicon.aluminum film, containing a silicon compound and an aluminum compound. The silicon.aluminum film is obtained by forming a coating film of the above composition and treating it with heat and/or light. The silicon.aluminum film can easily be formed from the above composition by the above method at a low cost without requiring an expensive vacuum apparatus or high-frequency wave generator.
    Type: Application
    Filed: December 24, 2003
    Publication date: November 16, 2006
    Applicant: JSR CORPORATION
    Inventors: Yasuaki Yokoyama, Michiko Yokoyama, Naomi Shinoda, Risa Yokoyama, Yasuo Matsuki
  • Patent number: 7071084
    Abstract: There is provided a method for forming wiring or an electrode by coating a substrate with a composition comprising (A) a complex of an amine compound and a hydrogenated aluminum compound and (B) a titanium compound or a composition comprising the complex and (C) metal particles and subjecting the obtained coating film to heating and/or a light treatment. By the method, a film can be formed that uses a conductive film forming composition with which wiring and an electrode that can be suitably used for electronic devices can be formed easily and inexpensively.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: July 4, 2006
    Assignees: JSR Corporation, Sharp Corporation, International Center for Materials Research
    Inventors: Yasuaki Yokoyama, Isamu Yonekura, Takashi Satoh, Tamaki Wakasaki, Yasumasa Takeuchi, Masayuki Endo
  • Publication number: 20060024937
    Abstract: There is provided a method for forming wiring or an electrode by coating a substrate with a composition comprising (A) a complex of an amine compound and a hydrogenated aluminum compound and (B) a titanium compound or a composition comprising the complex and (C) metal particles and subjecting the obtained coating film to heating and/or a light treatment. By the method, a film can be formed that uses a conductive film forming composition with which wiring and an electrode that can be suitably used for electronic devices can be formed easily and inexpensively.
    Type: Application
    Filed: September 29, 2005
    Publication date: February 2, 2006
    Applicants: JSR Corporation, SHARP CORPORATION, International Center for Materials Research
    Inventors: Yasuaki Yokoyama, Isamu Yonekura, Takashi Satoh, Tamaki Wakasaki, Yasumasa Takeuchi, Masayuki Endo
  • Patent number: 6953600
    Abstract: There are provided a conductive film forming composition capable of forming wiring or an electrode which can be suitably used in a variety of electronic devices, easily and inexpensively, a method for forming a film using the composition, a conductive film formed by the method, and wiring or an electrode which comprises the film. A conductive film forming composition comprising a complex of an amine compound and aluminum hydride and an organic solvent is applied on a substrate and then subjected to a heat treatment and/or irradiation with light, whereby a conductive film such as an electrode or wiring is produced.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: October 11, 2005
    Assignees: JSR Corporation, Sharp Corporation, International Center for Materials Research
    Inventors: Yasuaki Yokoyama, Yasuo Matsuki, Ikuo Sakono, Kazuki Kobayashi, Yasumasa Takeuchi
  • Patent number: 6875518
    Abstract: A composition capable of forming a metal ruthenium film and a ruthenium oxide film by a simple application/baking process, a process for forming a metal ruthenium film and a ruthenium oxide film from the composition, a metal ruthenium film and a ruthenium oxide film formed by the process, and electrodes formed of the films. A solution composition comprising a specific ruthenium complex. The coating film of this solution composition is heated in an atmosphere containing no oxygen or an atmosphere containing oxygen to form a metal ruthenium film or a ruthenium oxide film, respectively, and electrodes formed of the films.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: April 5, 2005
    Assignee: JSR Corporation
    Inventors: Hiroshi Shiho, Hitoshi Kato, Yasuo Matsuki, Satoshi Ebata, Yoichiro Maruyama, Yasuaki Yokoyama
  • Patent number: 6846513
    Abstract: Provided is a method of forming a silicon thin-film which comprises a step of arranging in one or more parts of a liquid arranging surface liquid which contains a silicide comprising ring silane and/or a derivative thereof, such ring silane comprising silicon and hydrogen, and a step of forming a silicon thin-film by vaporizing silicide from liquid and supplying the silicide to a thin-film-forming surface.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: January 25, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Masahiro Furusawa, Satoru Miyashita, Ichio Yudasaka, Tatsuya Shimoda, Yasuaki Yokoyama, Yasuo Matsuki, Yasumasa Takeuchi
  • Publication number: 20040192038
    Abstract: There is provided a method for forming wiring or an electrode by coating a substrate with a composition comprising (A) a complex of an amine compound and a hydrogenated aluminum compound and (B) a titanium compound or a composition comprising the complex and (C) metal particles and subjecting the obtained coating film to heating and/or a light treatment. By the method, a film can be formed that uses a conductive film forming composition with which wiring and an electrode that can be suitably used for electronic devices can be formed easily and inexpensively.
    Type: Application
    Filed: March 25, 2004
    Publication date: September 30, 2004
    Applicants: JSR Corporation, SHARP CORPORATION, International Center for Materials Research
    Inventors: Yasuaki Yokoyama, Isamu Yonekura, Takashi Satoh, Tamaki Wakasaki, Yasumasa Takeuchi, Masayuki Endo
  • Publication number: 20040185187
    Abstract: The present invention relates to a method of temporarily and firmly fixing two solids to each other and to a composition used in the method, which is a method of temporarily fixing, comprising temporarily fixing the two solids to each other with a liquid crystal compound or a composition comprising the liquid crystal compound. This method is used for a method of temporarily fixing a pad for chemical mechanical polishing, for example, to polish a wafer for a semiconductor device fixed on a surface of a base plate, when one solid is a pad for chemical mechanical polishing of a wafer for a semiconductor device and the other is a base plate to fix the pad.
    Type: Application
    Filed: January 9, 2004
    Publication date: September 23, 2004
    Inventors: Yasuaki Yokoyama, Nobuo Bessho, Masaaki Hanamura
  • Publication number: 20030224152
    Abstract: There are provided a conductive film forming composition capable of forming wiring or an electrode which can be suitably used in a variety of electronic devices, easily and inexpensively, a method for forming a film using the composition, a conductive film formed by the method, and wiring or an electrode which comprises the film.
    Type: Application
    Filed: April 10, 2003
    Publication date: December 4, 2003
    Applicants: JSR CORPORATION, SHARP CORPORATION, International Center for Materials Research
    Inventors: Yasuaki Yokoyama, Yasuo Matsuki, Ikuo Sakono, Kazuki Kobayashi, Yasumasa Takeuchi
  • Publication number: 20030087110
    Abstract: Provided is a method of forming a silicon thin-film which comprises a step of arranging in one or more parts of a liquid arranging surface liquid which contains a silicide comprising ring silane and/or a derivative thereof, such ring silane comprising silicon and hydrogen, and a step of forming a silicon thin-film by vaporizing silicide from liquid and supplying the silicide to a thin-film-forming surface.
    Type: Application
    Filed: December 28, 2001
    Publication date: May 8, 2003
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Masahiro Furusawa, Satoru Miyashita, Ichio Yudasaka, Tatsuya Shimoda, Yasuaki Yokoyama, Yasuo Matsuki, Yasumasa Takeuchi
  • Publication number: 20030008157
    Abstract: A composition capable of forming a metal ruthenium film and a ruthenium oxide film by a simple application/baking process, a process for forming a metal ruthenium film and a ruthenium oxide film from the composition, a metal ruthenium film and a ruthenium oxide film formed by the process, and electrodes formed of the films.
    Type: Application
    Filed: June 17, 2002
    Publication date: January 9, 2003
    Inventors: Hiroshi Shiho, Hitoshi Kato, Yasuo Matsuki, Satoshi Ebata, Yoichiro Maruyama, Yasuaki Yokoyama
  • Patent number: 6423463
    Abstract: A positive-tone photosensitive resin composition for forming a thick film which is suitably used for photofabrication such as manufacture of circuit boards, a photosensitive resin film, and a method of forming a bump using the same. The photosensitive resin composition comprising (A) a novolac resin with a weight average molecular weight of 2,000-30,000, (B) a polyvinyl lower alkyl ether, (C) a polyphenol derivative compound with a molecular weight of 200-1,000, and (D) a compound containing a naphthoquinonediazido group.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: July 23, 2002
    Assignee: JSR Corporation
    Inventors: Masaru Oota, Isamu Mochizuki, Kouichi Hirose, Yasuaki Yokoyama, Hozumi Sato