Patents by Inventor Hajime Eguchi

Hajime Eguchi 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: 10998008
    Abstract: The present disclosure generally relates to an interface connector in a tape embedded drive. The tape embedded drive has two long edges and two short edges. Within the tape embedded drive, there are numerous guide rollers, at least three feedthrough connectors, and two reels. The interface connector is located along one of the short edges and underneath one of the two reels. By placing the interface connector at that location, the tape embedded drive has sufficient real estate for all of the necessary reels, feedthrough connectors, and guide rollers while also ensuring stability of the tape embedded drive.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: May 4, 2021
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Kouki Uefune, Hajime Eguchi, Toshio Takahashi
  • Publication number: 20200346972
    Abstract: The present invention relates to a base material that comes into contact with water and contains a base material main body and a surface layer provided on at least a part of a surface that comes into contact with water of the base material main body, (1) in which the surface layer is composed of a cured product of a composition containing a compound having a biocompatible moiety and a reactive silyl group, the biocompatible moiety has a specific structure, the composition has a content of the biocompatible moiety being 25 to 83% by mass and a content of the reactive silyl group being 2 to 70% by mass, in a solid component, or (2) in which the surface layer has an elastic modulus showing a measured value in water being 0.1% to 63% with respect to a measured value after drying in the air.
    Type: Application
    Filed: July 17, 2020
    Publication date: November 5, 2020
    Applicant: AGO Inc
    Inventors: Hajime EGUCHI, Kyoko YAMAMOTO, Ryohei KOGUCHI, Yosuke AMINO, Noriko TANABE
  • Publication number: 20200330653
    Abstract: To provide a medical device, whereby the non-specific absorption amount is reduced, its durability is excellent and eluents from the surface layer are reduced. The medical device comprises a device substrate and a surface layer provided on at least part of the surface of the device substrate in contact with water, wherein at least part of the surface of the device substrate is made of an inorganic material, the surface layer is made of a cured product of a compound having a biocompatible group and an alkoxysilyl group, the content of the biocompatible group in the compound is from 25 to 83% by mass, and the content of the alkoxysilyl group is from 2 to 70% by mass.
    Type: Application
    Filed: July 1, 2020
    Publication date: October 22, 2020
    Applicant: AGC Inc.
    Inventors: Ryohei Koguchi, Hajime Eguchi, Kyoko Yamamoto
  • Publication number: 20200299626
    Abstract: To provide a cell culture container capable of preparing spheroids having a uniform size highly efficiently, and capable of microscopic observation simply, particularly fluorescence microscopic observation. A cell culture container comprising: side walls forming an opening, a bottom comprising a light-transmitting glass material, closing the lower end of the opening and having a plurality of recesses in a region which the opening faces on its upper surface, and a surface layer inhibiting cell adhesion formed on the inner surface of the recesses.
    Type: Application
    Filed: June 8, 2020
    Publication date: September 24, 2020
    Applicant: AGC Inc.
    Inventors: Ryohei KOGUCHI, Hajime EGUCHI, Lijun ZHU, Kyoko YAMAMOTO
  • Patent number: 10164358
    Abstract: An electrical feed-through assembly includes electrically conductive pins having a top apex and a bottom apex, where the pins extend through at least a majority of an electrically non-conductive material. The top apexes, the bottom apexes, or both the top and bottom apexes of the pins have an electrically conductive connection pad material, such as a solder pad, coupled thereto. In variations, the top and/or bottom apexes may be slightly recessed from a corresponding surface of the non-conductive material, such that the connection pads fill the respective recesses; and/or the top and/or bottom apexes barely extend from a corresponding surface, such that the connection pads bulge out from the corresponding surface. Such a feed-through configuration may inhibit pin bending, in addition to enabling use of more types of connectors beyond pin-and-socket type connectors.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: December 25, 2018
    Assignee: Western Digital Technologies, Inc.
    Inventors: Kyosuke Yoshida, Kimihiko Sudo, Takako Hayakawa, Hajime Eguchi, Yuta Onobu
  • Patent number: 10138312
    Abstract: To provide an inhibitor for inhibiting protein adhesion capable of easily forming a coating layer which is excellent in water resistance, from which coating components are less likely to be eluted, on which protein is less likely to be adsorbed and which is excellent in biocompatibility; a coating solution; a medical device having a coating layer employing this inhibitor for inhibiting protein adhesion; a method for producing the same; and a fluoropolymer to be used in this inhibitor for inhibiting protein adhesion. A compound for inhibiting protein adhesion comprising a fluoropolymer that has units having a biocompatible group, a fluorine atom content of from 5 to 60 mass % and a proportion P represented by the following formula of from 0.1 to 4.5%. (Proportion P)=((proportion (mass %) of units having a biocompatible group to all units of the fluoropolymer))/(fluorine atom content (mass %) of the fluoropolymer))×100.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: November 27, 2018
    Assignee: AGC Inc.
    Inventors: Ryohei Koguchi, Kyoko Yamamoto, Yuriko Kaida, Tohru Itoh, Aya Wada, Hajime Eguchi
  • Publication number: 20180298178
    Abstract: To provide a resin composition which is used to coat the substrate surface, thereby to selectively trap a variety of target substances via a ligand which specifically binds to the target substances on the substrate surface.
    Type: Application
    Filed: June 19, 2018
    Publication date: October 18, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Hiroki SATO, Tatsuaki MIWA, Alimjan IDIRIS, Ryohei KOGUCHI, Kyoko YAMAMOTO, Hajime EGUCHI
  • Publication number: 20180296988
    Abstract: To provide a cell-trapping filter which has a high cell trapping efficiency and which is excellent in water resistance. A cell-trapping filter comprising a substrate and a cell-separating mechanism by size, wherein the substrate has, at least on its surface, a layer formed of a fluorinated polymer having units having a biocompatible group, having a fluorine atom content of from 5 to 60 mass % and having a proportion P represented by the following formula of from 0.
    Type: Application
    Filed: June 21, 2018
    Publication date: October 18, 2018
    Applicants: Asahi Glass Company, Limited, National University Corporation Nagoya University
    Inventors: Naoto KIHARA, Ryohei KOGUCHI, Hajime EGUCHI, Masaru HORI, Hiromasa TANAKA, Kenji ISHIKAWA, Yoshinobu BABA, Hiroshi YUKAWA, Daisuke ONOSHIMA, Tetsunari HASE, Daiki KUBOYAMA
  • Publication number: 20180097301
    Abstract: An electrical feed-through assembly includes electrically conductive pins having a top apex and a bottom apex, where the pins extend through at least a majority of an electrically non-conductive material. The top apexes, the bottom apexes, or both the top and bottom apexes of the pins have an electrically conductive connection pad material, such as a solder pad, coupled thereto. In variations, the top and/or bottom apexes may be slightly recessed from a corresponding surface of the non-conductive material, such that the connection pads fill the respective recesses; and/or the top and/or bottom apexes barely extend from a corresponding surface, such that the connection pads bulge out from the corresponding surface. Such a feed-through configuration may inhibit pin bending, in addition to enabling use of more types of connectors beyond pin-and-socket type connectors.
    Type: Application
    Filed: September 30, 2016
    Publication date: April 5, 2018
    Inventors: Kyosuke Yoshida, Kimihiko Sudo, Takako Hayakawa, Hajime Eguchi, Yuta Onobu
  • Patent number: 9734874
    Abstract: In the context of a hard disk drive (HDD), an adhesive leak channel structural feature is positioned in an area at which an electrical feed-through is adhered with an adhesive to an enclosure base, where the leak channel feature inhibits the leakage of gas through the adhesive. Embodiments include providing the leak channel feature on the base and/or on the feed-through. Embodiments may further include application of an electrodeposition coating to the base in an area at which the adhesive is in contact.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: August 15, 2017
    Assignee: Western Digital Technologies, Inc.
    Inventors: Seong-Hun Choe, Kimihiko Sudo, Yuta Onobu, Takehito Nagata, Hajime Eguchi, Kyosuke Yoshida, Naoshi Mizumoto
  • Publication number: 20170221527
    Abstract: In the context of a hard disk drive (HDD), an adhesive leak channel structural feature is positioned in an area at which an electrical feed-through is adhered with an adhesive to an enclosure base, where the leak channel feature inhibits the leakage of gas through the adhesive. Embodiments include providing the leak channel feature on the base and/or on the feed-through. Embodiments may further include application of an electrodeposition coating to the base in an area at which the adhesive is in contact.
    Type: Application
    Filed: February 2, 2016
    Publication date: August 3, 2017
    Inventors: Seong-Hun Choe, Kimihiko Sudo, Yuta Onobu, Takehito Nagata, Hajime Eguchi, Kyosuke Yoshida, Naoshi Mizumoto
  • Publication number: 20170101497
    Abstract: To provide an inhibitor for inhibiting protein adhesion capable of easily forming a coating layer which is excellent in water resistance, from which coating components are less likely to be eluted, on which protein is less likely to be adsorbed and which is excellent in biocompatibility; a coating solution; a medical device having a coating layer employing this inhibitor for inhibiting protein adhesion; a method for producing the same; and a fluoropolymer to be used in this inhibitor for inhibiting protein adhesion. A compound for inhibiting protein adhesion comprising a fluoropolymer that has units having a biocompatible group, a fluorine atom content of from 5 to 60 mass % and a proportion P represented by the following formula of from 0.1 to 4.5%. (Proportion P)=((proportion (mass %) of units having a biocompatible group to all units of the fluoropolymer))/(fluorine atom content (mass %) of the fluoropolymer))×100.
    Type: Application
    Filed: December 21, 2016
    Publication date: April 13, 2017
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Ryohei KOGUCHI, Kyoko Yamamoto, Yuriko Kaida, Tohru Itoh, Aya Wada, Hajime Eguchi
  • Publication number: 20160109322
    Abstract: The present disclosure relates to a leak detection apparatus that includes an acoustic wave actuator mounted within a hermetically sealed chamber. The hermetically sealed chamber isolates a fluid medium from an external atmosphere and the acoustic wave actuator propagates an acoustic wave through the fluid medium. The apparatus further includes an acoustic wave transducer mounted within the hermetically sealed chamber and a comparison module. The acoustic wave transducer detects fluid pressure wave data related to the acoustic wave. The comparison module calculates an acoustic velocity based on the fluid pressure wave data and compares the acoustic velocity to a predetermined threshold velocity in order to recognize leaks in the hermetically sealed chamber.
    Type: Application
    Filed: October 20, 2014
    Publication date: April 21, 2016
    Inventors: Hajime Eguchi, Seong-Hun Choe, Hiromi Uiji
  • Patent number: 9093094
    Abstract: Approaches to a rotary actuator assembly configured for use in a hard disk drive (HDD) include a voice coil interleaved between the pivot bearing and the actuator arm, providing a longer pivot-to-head dimension which reduces the radius of curvature of the arc in which the head slider travels over the disk for accessing portions of the disk. Reducing the arc radius of curvature reduces the maximum skew angles of the read-write head in association with the disk tracks. The width of the actuator arm can be widened to provide improved operating characteristics even in view of the longer pivot-to-head dimension.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: July 28, 2015
    Assignee: HGST Netherlands B.V.
    Inventors: Kouki Uefune, Takenori Atsumi, Hajime Eguchi, Shigenori Takada
  • Publication number: 20150154994
    Abstract: Approaches to a rotary actuator assembly configured for use in a hard disk drive (HDD) include a voice coil interleaved between the pivot bearing and the actuator arm, providing a longer pivot-to-head dimension which reduces the radius of curvature of the arc in which the head slider travels over the disk for accessing portions of the disk. Reducing the arc radius of curvature reduces the maximum skew angles of the read-write head in association with the disk tracks. The width of the actuator arm can be widened to provide improved operating characteristics even in view of the longer pivot-to-head dimension.
    Type: Application
    Filed: December 3, 2013
    Publication date: June 4, 2015
    Applicant: HGST Netherlands B.V.
    Inventors: Kouki Uefune, Takenori Atsumi, Hajime Eguchi, Shigenori Takada
  • Publication number: 20150009591
    Abstract: Approaches to improving head positioning accuracy in a hard disk drive, by reducing air pressure fluctuations that would otherwise cause unwanted coil torsion in a voice coil actuator, include a voice coil actuator having a streamlined structure configured to affect the flow of air acting upon a coil-supporting arm. The streamlined structure comprises an upper surface and a lower surface, where the upper surface is sloped downward toward the lower surface and the lower surface is sloped upward toward the upper surface.
    Type: Application
    Filed: July 8, 2013
    Publication date: January 8, 2015
    Inventors: Akiko Kagatsume, Taisuke Sugii, Yoshiyuki Hirono, Hajime Eguchi, Takashi Kouno
  • Publication number: 20140300988
    Abstract: Approaches to improving head positioning accuracy in a hard disk drive, by suppressing airflow disturbances that would otherwise cause unwanted component vibration, include a voice coil motor having a sidewall spanning a gap between the VCM upper yoke and lower yoke. This VCM sidewall also serves as the inner wall of a bypass channel, for diverting airflow away from the actuator arm and associated components.
    Type: Application
    Filed: April 8, 2013
    Publication date: October 9, 2014
    Applicant: HGST Netherlands B.V.
    Inventors: Hajime Eguchi, Takashi Kouno
  • Patent number: 8854771
    Abstract: Approaches to improving head positioning accuracy in a hard disk drive, by suppressing airflow disturbances that would otherwise cause unwanted component vibration, include a voice coil motor having a sidewall spanning a gap between the VCM upper yoke and lower yoke. This VCM sidewall also serves as the inner wall of a bypass channel, for diverting airflow away from the actuator arm and associated components.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: October 7, 2014
    Assignee: HGST Netherlands B.V.
    Inventors: Hajime Eguchi, Takashi Kouno
  • Publication number: 20130155547
    Abstract: A damping material to increase a damping ratio is disclosed. In one embodiment, an actuator arm assembly of a hard-disk drive (HDD) comprises an actuator arm. A viscoelastic layer is coupled with the actuator arm. A constraining layer is coupled with the viscoelastic layer on a side of the viscoelastic layer opposite the actuator arm. The coupling of the actuator arm, the viscoelastic layer, and the constraining layer occurs over an area which is a fraction of the area between the constraining layer and the actuator arm.
    Type: Application
    Filed: December 19, 2011
    Publication date: June 20, 2013
    Inventors: Hajime Eguchi, Naoaki Kanada
  • Patent number: 7929254
    Abstract: Embodiments of the present invention help to suppress performance degradation in an actuator of a disk drive device when attaching a damping member to a single surface of an arm. According to one embodiment, in a HDD a damping member is attached to a single surface of an arm. A shape of an inner arm is asymmetric with the center position between disks. Specifically, the thickness from a center position between the disks to the damping material attaching surface is thinner than the thickness from a center position between the disks to an opposite surface of the damping member attaching surface. This suppresses deformation of the vibration mode in the case that the damping member is attached to the single surface of the arm.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: April 19, 2011
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Eiji Soga, Masakazu Sasaki, Hajime Eguchi, Hiromitsu Masuda