Patents by Inventor Sumio Yamaguchi

Sumio Yamaguchi 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: 20200216984
    Abstract: A conductive composite fiber is formed from a polymer containing conductive carbon black in a polyamide resin as a conductive layer and thermoplastic resin as a nonconductive layer that is exposed in three or more locations on the outside surface of the fiber in a cross section, the coefficient of variation in the surface area of each conductive layer in a fiber cross section is 10% or less, and the average value of the area specific resistance is 4 log (?┬Ěcm). The variation in the fiber surface specific resistance is suppressed and the variation in the exposed surface area of each conductive layer polymer in a fiber cross section is suppressed by exposure of the conductive layer in three or more locations on the fiber surface, crimping of the original yarn is suppressed by equal disposition, and antistatic performance for woven and knitted fabrics and carpets is improved.
    Type: Application
    Filed: September 26, 2018
    Publication date: July 9, 2020
    Inventors: Sumio Yamaguchi, Sho Murata, Yasunori Kanemori
  • Patent number: 10106917
    Abstract: A polyphenylene sulfide monofilament is characterized by having a continuous heat-shrinking stress variation of at most 5% and a size uniformity (U %, Normal value) of at most 1.2%; and a drum-shaped fiber package includes the wound polyphenylene sulfide monofilament described. The polyphenylene sulfide monofilament has a very small aperture variation rate and is optimal for high-precision filters.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: October 23, 2018
    Assignee: Toray Industries, Inc.
    Inventors: Sho Murata, Sumio Yamaguchi, Tsuyoshi Hayashi
  • Publication number: 20180155151
    Abstract: A drum-shaped package formed of a poly(lactic acid)-based monofilament 50 wt. % or more of which is constituted from lactic acid monomer, the drum-shaped package being characterized in that the dry heat shrinking stress of the monofilament in the innermost layer section of the package is 0.04 cN/dtex or less. The drum-shaped package formed of a poly(lactic acid)-based monofilament for which gauze fabric quality and higher order passability during weaving are excellent.
    Type: Application
    Filed: May 13, 2016
    Publication date: June 7, 2018
    Inventors: Sumio Yamaguchi, Sho Murata, Tsuyoshi Hayashi
  • Publication number: 20170342600
    Abstract: A polyphenylene sulfide monofilament is characterized by having a continuous heat-shrinking stress variation of at most 5% and a size uniformity (U %, Normal value) of at most 1.2%; and a drum-shaped fiber package includes the wound polyphenylene sulfide monofilament described. The polyphenylene sulfide monofilament has a very small aperture variation rate and is optimal for high-precision filters.
    Type: Application
    Filed: December 15, 2015
    Publication date: November 30, 2017
    Inventors: Sho Murata, Sumio Yamaguchi, Tsuyoshi Hayashi
  • Patent number: 7645509
    Abstract: The present invention provides a method for producing a high-quality capillary tube used in an electrophoresis apparatus in a safe and inexpensive manner. A polymer coating on a capillary tube is converted into gas and removed through an oxidative reaction with oxygen radicals resulting from ozone decomposition, thereby providing tapered polymer coating. The material of the polymer may be polyimide.
    Type: Grant
    Filed: July 23, 2004
    Date of Patent: January 12, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Kunio Harada, Masao Kamahori, Hideki Kambara, Sumio Yamaguchi, Sukeyoshi Tsunekawa
  • Patent number: 7419577
    Abstract: The present invention provides a method for producing a high-quality capillary tube used in an electrophoresis apparatus in a safe and inexpensive manner. A polymer coating on a capillary tube is converted into gas and removed through an oxidative reaction with oxygen radicals resulting from ozone decomposition.
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: September 2, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Kunio Harada, Masao Kamahori, Hideki Kambara, Sumio Yamaguchi, Sukeyoshi Tsunekawa
  • Publication number: 20050003211
    Abstract: The present invention provides a method for producing a high-quality capillary tube used in an electrophoresis apparatus in a safe and inexpensive manner. A polymer coating on a capillary tube is converted into gas and removed through an oxidative reaction with oxygen radical resulting from ozone decomposition.
    Type: Application
    Filed: July 23, 2004
    Publication date: January 6, 2005
    Inventors: Kunio Harada, Masao Kamahori, Hideki Kambara, Sumio Yamaguchi, Sukeyoshi Tsunekawa
  • Patent number: 6821446
    Abstract: The present invention provides a method for producing a high-quality capillary tube used in an electrophoresis apparatus in a safe and inexpensive manner. A polymer coating on a capillary tube is converted into gas and removed through an oxidative reaction with oxygen radicals resulting from ozone decomposition.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: November 23, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Kunio Harada, Masao Kamahori, Hideki Kambara, Sumio Yamaguchi, Sukeyoshi Tsunekawa
  • Publication number: 20040134783
    Abstract: The present invention provides a method for producing a high-quality capillary tube used in an electrophoresis apparatus in a safe and inexpensive manner.
    Type: Application
    Filed: October 20, 2003
    Publication date: July 15, 2004
    Applicant: Hitachi, Ltd.
    Inventors: Kunio Harada, Masao Kamahori, Hideki Kambara, Sumio Yamaguchi, Sukeyoshi Tsunekawa
  • Patent number: 6674171
    Abstract: An impurity region is formed on the surface of a semiconductor substrate. An insulating layer is provided on the semiconductor substrate to cover the impurity region. A trench for defining a wiring layer is provided on the surface of the insulating layer. A connection hole is provided in the insulating layer for connecting the trench and the impurity region with each other. A conductive layer made of a high melting point metal or a compound thereof is embedded in the connection hole. A copper wire is formed in the trench to be connected to the conductive layer. According to the present invention, a semiconductor device improved to be capable of implementing an excellent wiring circuit and providing a highly integrated semiconductor circuit is obtained.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: January 6, 2004
    Assignee: Renesas Technology Corp.
    Inventor: Sumio Yamaguchi
  • Patent number: 6629660
    Abstract: A method and apparatus for winding synthetic fibers is disclosed. According to the invention, a yarn is wound around a bobbin without winding a tail bunch, at a high successful bobbin-to-bobbin yarn transfer rate for a variety of yarn properties, i.e. different in thickness, lubricant used, etc., while inhibiting the loosening of the yarn tail into single fibers and stably and easily forming a proper yarn tail length. Tail bunch removing work is not required and the winding process is stabilized. A yarn is wound around an empty bobbin using a yarn winding apparatus composed of a traverse fulcrum guide, a traverse device, a contact pressure roller, two spindles, a moving device for moving the spindles, and a yarn transfer device for introducing the yarn into a yarn holding portion for holding the yarn.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: October 7, 2003
    Assignee: Toray Industries, Inc.
    Inventors: Sumio Yamaguchi, Tamotsu Suzuki, Hirotaka Nakajima, Katsumi Sonoyama, Kazumasa Yamashita, Teruaki Saijo
  • Publication number: 20030137049
    Abstract: An impurity region is formed on the surface of a semiconductor substrate. An insulating layer is provided on the semiconductor substrate to cover the impurity region. A trench for defining a wiring layer is provided on the surface of the insulating layer. A connection hole is provided in the insulating layer for connecting the trench and the impurity region with each other. A conductive layer made of a high melting point metal or a compound thereof is embedded in the connection hole. A copper wire is formed in the trench to be connected to the conductive layer. According to the present invention, a semiconductor device improved to be capable of implementing an excellent wiring circuit and providing a highly integrated semiconductor circuit is obtained.
    Type: Application
    Filed: August 1, 2002
    Publication date: July 24, 2003
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Sumio Yamaguchi
  • Publication number: 20020028308
    Abstract: The present invention provides a method for producing a high-quality capillary tube used in an electrophoresis apparatus in a safe and inexpensive manner.
    Type: Application
    Filed: September 4, 2001
    Publication date: March 7, 2002
    Applicant: Hitachi, Ltd.
    Inventors: Kunio Harada, Masao Kamahori, Hideki Kambara, Sumio Yamaguchi, Sukeyoshi Tsunekawa
  • Patent number: 5565708
    Abstract: A semiconductor device comprising conductors electrically connected through a contact hole interlayer insulation layer with a trilayer barrier layer comprising a titanium silicide layer, titanium silicide layer formed on the titanium silicide by collimation sputtering, and a thermally nitrided titanium formed on the titanium nitride layer. The use of a trilayer barrier layer enables through the capacity of the collimation sputtering apparatus to be increased, prevents particles from occurring, and formation of a low resistance electrical connection between conductors, in addition to preventing diffusion from the titanium nitride layer and the second titanium layer to the thermally nitrided titanium layer, and between conductors.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: October 15, 1996
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Akihiko Ohsaki, Sumio Yamaguchi, Atsushi Ishii, Kazuyoshi Maekawa, Masahiko Fujisawa
  • Patent number: 5246526
    Abstract: In a surface treatment apparatus, an organic substance is removed through ashing by ultraviolet rays and ozone at atmospheric pressure. A transparent partition plate is provided in closely spaced, opposed relation to a material to be treated, and at least one gas outlet is open to that surface of the partition plate opposed to the material to be treated. With this arrangement, the gas can be directly collected via the gas outlet during the treatment, and the end point of the organic substance removal treatment can be detected by analyzing the collected gas.
    Type: Grant
    Filed: July 2, 1992
    Date of Patent: September 21, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Sumio Yamaguchi, Akio Inada, Kenichi Kawasumi
  • Patent number: 4580522
    Abstract: A rotary substrate holder of a molecular beam epitaxy apparatus including leads-cum-posts serving both as leads for passing a current to a heater for heating a substrate and as posts for supporting the heater. By this arrangement, heat transferred from the heater to a bearing disposed in the vicinity of the heater is minimized in amount, thereby prolonging the service life of the holder and minimizing a heat loss thereof.
    Type: Grant
    Filed: February 27, 1985
    Date of Patent: April 8, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Kazumasa Fujioka, Sumio Okuno, Muneo Mizumoto, Hideaki Kamohara, Shinjiro Ueda, Takao Kuroda, Sumio Yamaguchi, Naoyuki Tamura
  • Patent number: 4563900
    Abstract: In an acoustic microscope wherein an acoustic wave is projected to a predetermined specimen by an acoustic lens, and a disturbed acoustic wave from the specimen is imaged; an acoustic microscope characterized in that the lens has a ring which is arranged around it, whereby a liquid to serve as an acoustic propagation medium is held between the ring and the specimen by capillarity.
    Type: Grant
    Filed: April 26, 1984
    Date of Patent: January 14, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Kunio Harada, Sumio Yamaguchi, Hiroshi Kanda, Isao Ishikawa, Yuzuru Ohji
  • Patent number: 4542712
    Abstract: An apparatus for molecular beam epitaxy according to the present invention is so constructed that a substrate is introduced into a vacuum vessel with a substrate surface for epitaxial growth facing in the direction of gravity, and that the substrate is conveyed to and transferred into vacuum chambers for performing processes necessary for the epitaxial growth, with the substrate surface maintained in the direction of gravity and without directly touching the substrate surface.
    Type: Grant
    Filed: June 22, 1984
    Date of Patent: September 24, 1985
    Assignee: Hitachi, Ltd.
    Inventors: Kazuo Sato, Sumio Yamaguchi, Shigeo Kato, Yasuhide Matsumura, Muneo Mizumoto, Sumio Okuno, Naoyuki Tamura
  • Patent number: 4169695
    Abstract: An electromagnetic pump is disclosed in which a pair of check valves and a pressure-regulating mechanism are inserted in series in a fluid passage extending from a suction inlet to a discharge outlet and a pressure chamber operatively connected with a plunger is provided between the check valves. When a solenoid coil surrounding the plunger is supplied with an intermittent electric current, the plunger moves to and fro, thereby the pressure in the pressure chamber being varied to have the check valves given rise to pumping action. The pressure-regulating mechanism function to control the pressure of fluid discharged from the outlet, thereby absorbing the pulsation generated by the reciprocal pumping action of the plunger.
    Type: Grant
    Filed: August 11, 1977
    Date of Patent: October 2, 1979
    Assignee: Jidosha Kiki Co., Ltd.
    Inventors: Naosuke Masuda, Sumio Yamaguchi