Patents by Inventor Shinichi Hamaguchi

Shinichi Hamaguchi 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: 20140120475
    Abstract: An electron beam exposure method includes the steps of: preparing an exposure mask having a plurality of opening patterns formed by dividing a drawing object pattern into exposable regions; and drawing the drawing object pattern by performing exposure with an electron beam passing through the opening patterns of the exposure mask. Each end portion serving as a joint in each opening pattern of the exposure mask is provided with a joining portion tapered in a width of the opening pattern. The exposure is performed in such a way that portions drawn through adjacent joining portions overlap each other.
    Type: Application
    Filed: October 17, 2013
    Publication date: May 1, 2014
    Applicant: ADVANTEST CORPORATION
    Inventors: Shinichi Hamaguchi, Masaki Kurokawa, Masahiro Takizawa
  • Patent number: 8709470
    Abstract: The present invention relates to water soluble quaternized chitosan derivatives which form hydrogel matrix with broad antimicrobial properties for the protection and coating of medical device. Hydrogel is attractive as an antimicrobial coating since its hydrophilicity intrinsically prevents the reversible nonspecific attachment of microbes. In order to achieve hydrogel formation, quaternized chitosan can be grafted with polymerizable groups, especially photocrosslinkable groups, such as methacrylates, PEG derivatives and be converted into hydrogels through a thermal or UV polymerization process. Hydrogels are hydrated cross-linked polymeric systems that contain water in an equilibrium state forming cushion water shield. The present invention is widely used in many medical devices.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: April 29, 2014
    Assignees: Menicon Co., Ltd., Nanyang Technological University
    Inventors: Chan Bee Eng Mary, Poon Yin Fun, Mouad Lamrani, Shinichi Hamaguchi
  • Patent number: 8652714
    Abstract: The present invention provides an electrophotographic photoconductor including an intermediate layer having sufficient electron transportability and blocking property and capable of suppressing image defects such as fogging and dots. The electrophotographic photoconductor according to the present invention includes a conductive support, a photosensitive layer disposed on the conductive support, and an intermediate layer disposed between the conductive support and the photosensitive layer, wherein the intermediate layer comprises metal oxide particles and a binder resin. The metal oxide particles are surface-treated with an alkoxysilane oligomer represented by the following Formula (1): SinOn-1(OR1)m(OR2)l??Formula (1) wherein R1 and R2 each individually represents a C1-4 alkyl group; n represents an integer of 2 to 20; and m and l each individually represents an integer of 0 or more and satisfies an equation of m+1=2n+2.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: February 18, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Shinichi Hamaguchi, Tomoo Sakimura, Mayuko Matsusaki
  • Publication number: 20140038094
    Abstract: The present invention provides an electrophotographic photoconductor including an electrically conductive substrate, an intermediate layer, and a photosensitive layer that are formed on the electrically conductive support, the intermediate layer including first titanium oxide particles surface-treated with a first reactive organic silicon compound, second titanium oxide particles surface-treated with a second reactive organic silicon compound different from the first reactive organic silicon compound, and a binder resin. The first reactive organic silicon compound is methyl hydrogen polysiloxane. The second reactive organic silicon compound is a compound represented by the following general formula (1): R—Si—(X)3??(1) R represents a alkyl group having 1 to 10 carbon atoms substituted by at least one of acryloxy and methacryloxy groups or unsubstituted; and X represents an alkoxy group having 1 to 4 carbon atoms or a halogen atom.
    Type: Application
    Filed: July 19, 2013
    Publication date: February 6, 2014
    Applicant: Konica Minolta, Inc.
    Inventors: Shinichi HAMAGUCHI, Tomoo SAKIMURA, Mayuko MATSUSAKI, Hiroshi NAKAHARA
  • Patent number: 8450034
    Abstract: Provided is an electrophotographic photoreceptor exhibiting not only excellent durability together with high sensitivity but also excellent image reproduction, which is suitable for an image forming method by which imagewise exposure is performed employing a light source having an emission wavelength peak being in the range of 350-500 nm to form a high density electrostatic latent image on a photoreceptor, and also provided are an image forming method employing the electrophotographic photoreceptor, and an image forming apparatus thereof.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: May 28, 2013
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Masanori Yumita, Toyoko Shibata, Shinichi Hamaguchi
  • Patent number: 8441274
    Abstract: A manufacturing method of manufacturing a wafer unit for testing includes forming a plurality of test circuits on a circuit wafer, forming a plurality of circuit pads on a predetermined surface of a connecting wafer, forming a plurality of wafer pads on a rear surface of the connection wafer opposing the predetermined surface, forming a plurality of long via holes to electrically connect the plurality of circuit pads and the plurality of wafer pads, and forming the wafer unit for testing, by overlapping the circuit wafer and the connection wafer to electrically connect the plurality of test circuits and the plurality of circuit pads.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: May 14, 2013
    Assignee: Advantest Corporation
    Inventor: Shinichi Hamaguchi
  • Publication number: 20130052575
    Abstract: The present invention provides an electrophotographic photoconductor including an intermediate layer having sufficient electron transportability and blocking property and capable of suppressing image defects such as fogging and dots. The electrophotographic photoconductor according to the present invention includes a conductive support, a photosensitive layer disposed on the conductive support, and an intermediate layer disposed between the conductive support and the photosensitive layer, wherein the intermediate layer comprises metal oxide particles and a binder resin. The metal oxide particles are surface-treated with an alkoxysilane oligomer represented by the following Formula (1): SinOn-1(OR1)m(OR2)l??Formula (1) wherein R1 and R2 each individually represents a C1-4 alkyl group; n represents an integer of 2 to 20; and m and l each individually represents an integer of 0 or more and satisfies an equation of m+1=2n+2.
    Type: Application
    Filed: August 27, 2012
    Publication date: February 28, 2013
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Shinichi HAMAGUCHI, Tomoo SAKIMURA, Mayuko MATSUSAKI
  • Publication number: 20120288300
    Abstract: The present invention provides an electrophotographic photoconductor that can improve unevenness in image density and reduce image defects such as fogging and dots. The electrophotographic photoconductor includes a conductive support, an intermediate layer, and a photosensitive layer. The intermediate layer includes metal oxide particles surface-treated with a titanium chelate compound represented by the following formula (1): Ti(OR)n(L)4-n??(1) wherein R at each occurrence independently represents a C1-16 aliphatic hydrocarbon group; L at each occurrence independently represents a ligand derived from a chelating agent selected from the group consisting of ?-ketoester represented by the following formula (1a): ?-diketone represented by the following formula (1b): and a C3-10 alkylene glycol; n represents an integer of 1 to 3; if n is 2 or more, two Rs may be coupled to each other.
    Type: Application
    Filed: May 8, 2012
    Publication date: November 15, 2012
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Mayuko MATSUSAKI, Tomoo SAKIMURA, Shinichi HAMAGUCHI
  • Patent number: 8289040
    Abstract: A wafer unit for testing is electrically connected to a plurality of chips to be tested formed on a wafer to be tested, the wafer unit for testing including: a connecting wafer provided to face the wafer to be tested, and to be electrically connected to each of the plurality of chips to be tested; and a temperature distribution adjusting section provided on the connecting wafer, and to adjust a temperature distribution of the wafer to be tested.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: October 16, 2012
    Assignee: Advantest Corporation
    Inventors: Yoshio Komoto, Yoshiharu Umemura, Shinichi Hamaguchi, Yasushi Kawaguchi
  • Publication number: 20120164208
    Abstract: The present invention relates to water soluble quaternized chitosan derivatives which form hydrogel matrix with broad antimicrobial properties for the protection and coating of medical device. Hydrogel is attractive as an antimicrobial coating since its hydrophilicity intrinsically prevents the reversible nonspecific attachment of microbes. In order to achieve hydrogel formation, quaternized chitosan can be grafted with polymerizable groups, especially photocrosslinkable groups, such as methacrylates, PEG derivatives and be converted into hydrogels through a thermal or UV polymerization process. Hydrogels are hydrated cross-linked polymeric systems that contain water in an equilibrium state forming cushion water shield.
    Type: Application
    Filed: July 13, 2009
    Publication date: June 28, 2012
    Applicants: NANYANG TECHNOLOGICAL UNIVERSITY, MENICON CO., LTD.
    Inventors: Chan Bee Eng Mary, Poon Yin Fun, Mouad Lamrani, Shinichi Hamaguchi
  • Patent number: 8158314
    Abstract: An object of the present invention is to form a high density electrostatic latent image on an organic photoreceptor via image exposure using a semiconductor laser or a light-emitting diode of an oscillation wavelength of 350-500 nm; and to provide an organic photoreceptor exhibiting improved sensitivity and repetition characteristics or improved dot reproducibility deterioration, and an image forming apparatus employing the organic photoreceptor. In an organic photoreceptor having a charge generating layer and a charge transporting layer on a conductive support, an organic photoreceptor wherein a charge generating layer incorporates a binder resin and a Br substituted pyranthrone-based compound and the spectral spectrum of the charge generating layer has maximum absorption values each in the region of 430-445 nm, 500-510 nm, and 530-545 nm.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: April 17, 2012
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Tomoko Sakimura, Toyoko Shibata, Shinichi Hamaguchi
  • Publication number: 20120077116
    Abstract: An organic photoreceptor comprising a cylindrical support having thereon at least a charge generation layer and a charge transport layer, the cylindrical support having a corrugation processing profile along a central axis direction of the cylindrical support provided on a circumferential surface of the cylindrical support, wherein the corrugation processing profile meets Formula 1: 10 ?m??L,??Formula 1 provided that ?L represents a maximum value of variation of periods of the corrugation processing profile within an image-forming region of the cylindrical support, and the charge generation layer comprises a gallium phthalocyanine pigment.
    Type: Application
    Filed: September 21, 2011
    Publication date: March 29, 2012
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Shinichi HAMAGUCHI, Tomoo SAKIMURA, Mayuko MATSUSAKI
  • Patent number: 8129617
    Abstract: An electric distribution box includes a resin exterior cover which houses an interior component and has an opening for resin-molding the exterior cover on a bottom wall of the exterior cover, and a resin cap which is fit into the opening to close the opening. A flange formed on an outer periphery of the resin cap is kept in intimate contact with the bottom wall of the exterior cover. A molding hole for forming a locking piece by resin molding is provided on the flange. The locking piece locks the resin cap to the opening of the exterior cover. A swell is formed at an entire peripheral edge of the molding hole of the resin cap. An outer face of the interior component is kept in intimate contact with the swell so that the molding hole of the resin cap is closed by the outer face of the interior component and the flange is kept in intimate contact with the bottom wall of the exterior cover.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: March 6, 2012
    Assignee: Yazaki Corporation
    Inventors: Makoto Nakayama, Shinichi Hamaguchi
  • Patent number: 8129083
    Abstract: An electrophotographic photoreceptor is disclosed, comprising on or over an electrically conductive support a photosensitive layer containing a charge generation material and a charge transfer material, wherein the charge generation material is comprised of two or more compounds represented by the following formula wherein X and Y are each an alkyl group or a halogen atom, n is an integer of 1 to 6 and m is an integer of 0 to 6, and wherein the compounds differ in at least one of m and n of the formula.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: March 6, 2012
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Tomoko Sakimura, Toyoko Shibata, Fumitaka Mochizuki, Shinichi Hamaguchi, Masanori Yumita
  • Publication number: 20110311907
    Abstract: Reduced are interferential streaks in a halftone image, which are produced when using a cylindrical photoreceptor conductive substrate having been subjected to tool bit cutting processing, and provided are an electrophotographic photoreceptor capable of obtaining high image quality in response to a light printing field or the like and an image forming method employing the electrophotographic photoreceptor. Disclosed is an electrophotographic photoreceptor possessing a cylindrical substrate having been finished via cutting processing and provided thereon, a photosensitive layer, wherein among peaks other than at a lag of 0 in a correlogram of a substrate surface profile in a direction along a central axis of the substrate, a mean value from a maximum peak in height to a third peak in height is 0.3-0.8, each of the peaks in height corresponding to an autocorrelation coefficient.
    Type: Application
    Filed: June 2, 2011
    Publication date: December 22, 2011
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Tomoo SAKIMURA, Naoki NOZAKI, Shinichi HAMAGUCHI, Toshiko Nozaki, Hisashi NOZAKI, Mayuko MATSUSAKI
  • Patent number: 8071877
    Abstract: A box for accommodating an electric connection box is provided. The box includes a lower cover which has a plurality of walls for surrounding a space to accommodate the electric connection box toward a predetermined insertion direction, and an upper cover. The plurality of walls includes: a first wall which extends along the insertion direction; second and third walls which extend from the first wall in a direction intersecting the insertion direction and faces each other; a fourth wall which extends from the first, second and third walls at a deep side of the insertion direction so as to support the electric connection box; and a fifth wall which extends from the second and third walls along the insertion direction, and is substantially parallel to the first wall so as to press-sandwich the electric connection box by the first and fifth walls.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: December 6, 2011
    Assignee: Yazaki Corporation
    Inventors: Makoto Nakayama, Shinichi Hamaguchi, Yutaka Sekiuchi
  • Patent number: 8034519
    Abstract: Disclosed is an electrophotographic photoreceptor comprising on or over an electrically conductive support a photosensitive layer containing a pyranthrone compound represented by the following formula and the pyranthrone compound has a crystal structure exhibiting a CuK? X-ray diffraction spectrum having peaks at angles (2?±0.2°) of 12.3°, 20.5°, 25.3° and 28.3°.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: October 11, 2011
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Tomoko Sakimura, Toyoko Shibata, Shinichi Hamaguchi
  • Patent number: 8009527
    Abstract: The optical pickup device according to the present invention includes: a light source which emits a first light at a first wavelength, a second light at a second wavelength and a third light at a third wavelength; an optical path combining unit which combines vectors of the first, second and third light emitted by the light source, and matches optical axes of the first light and the third light; a light collection unit which condenses the light from the optical path combining unit into the optical information storage medium; a diffraction element which diffracts reflected light from the optical information storage medium; a first photo detector, a second photo detector and a third photo detector which receives the diffracted light from the first diffraction element; and a prevention unit formed between the first diffraction element and the first photo detector, the second photo detector and the third photo detector, and which prevents irradiation of + first-order diffracted light diffracted by the first diffr
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: August 30, 2011
    Assignee: Panasonic Corporation
    Inventors: Shinichi Hamaguchi, Yuzo Shimizu, Daisuke Furukawa, Naoto Shimada, Toshihiro Kuroda, Toyonori Kusuhara, Hiroaki Yamamoto
  • Patent number: 7969834
    Abstract: The optical pickup device according to the present invention includes: a light source which emits light at first, second and third wavelengths; an optical path combining unit which combines vectors of the light at the first, second and third wavelengths which is emitted by the light source, and matches optical axes of the light at the first wavelength and the light at the third wavelength; a light condensing unit which condenses the light from the optical path combining unit onto the optical information storage medium; a diffraction element which diffracts light at the first, second and third wavelength which is reflected from the optical information storage medium, in a first direction and a second direction respectively; a first photo detector which receives light at the first, second and third wavelength that is diffracted in the first direction by the diffraction element; a second photo detector which receives light at the first and third wavelength that is diffracted in the second direction by the diffra
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: June 28, 2011
    Assignee: Panasonic Corporation
    Inventors: Shinichi Hamaguchi, Naoki Nakanishi, Tatsuya Nakamori, Naoto Shimada
  • Publication number: 20110151364
    Abstract: Provided is an electrophotographic photoreceptor exhibiting not only excellent durability together with high sensitivity but also excellent image reproduction, which is suitable for an image forming method by which imagewise exposure is performed employing a light source having an emission wavelength peak being in the range of 350-500 nm to form a high density electrostatic latent image on a photoreceptor, and also provided are an image forming method employing the electrophotographic photoreceptor, and an image forming apparatus thereof.
    Type: Application
    Filed: December 3, 2010
    Publication date: June 23, 2011
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Masanori YUMITA, Toyoko SHIBATA, Shinichi HAMAGUCHI