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).
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Publication number: 20200216984Abstract: 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 (?·cm). 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: ApplicationFiled: September 26, 2018Publication date: July 9, 2020Inventors: Sumio Yamaguchi, Sho Murata, Yasunori Kanemori
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Patent number: 10106917Abstract: 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: GrantFiled: December 15, 2015Date of Patent: October 23, 2018Assignee: Toray Industries, Inc.Inventors: Sho Murata, Sumio Yamaguchi, Tsuyoshi Hayashi
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Publication number: 20180155151Abstract: 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: ApplicationFiled: May 13, 2016Publication date: June 7, 2018Inventors: Sumio Yamaguchi, Sho Murata, Tsuyoshi Hayashi
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Publication number: 20170342600Abstract: 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: ApplicationFiled: December 15, 2015Publication date: November 30, 2017Inventors: Sho Murata, Sumio Yamaguchi, Tsuyoshi Hayashi
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Patent number: 7645509Abstract: 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: GrantFiled: July 23, 2004Date of Patent: January 12, 2010Assignee: Hitachi, Ltd.Inventors: Kunio Harada, Masao Kamahori, Hideki Kambara, Sumio Yamaguchi, Sukeyoshi Tsunekawa
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Patent number: 7419577Abstract: 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: GrantFiled: October 20, 2003Date of Patent: September 2, 2008Assignee: Hitachi, Ltd.Inventors: Kunio Harada, Masao Kamahori, Hideki Kambara, Sumio Yamaguchi, Sukeyoshi Tsunekawa
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Publication number: 20050003211Abstract: 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: ApplicationFiled: July 23, 2004Publication date: January 6, 2005Inventors: Kunio Harada, Masao Kamahori, Hideki Kambara, Sumio Yamaguchi, Sukeyoshi Tsunekawa
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Patent number: 6821446Abstract: 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: GrantFiled: September 4, 2001Date of Patent: November 23, 2004Assignee: Hitachi, Ltd.Inventors: Kunio Harada, Masao Kamahori, Hideki Kambara, Sumio Yamaguchi, Sukeyoshi Tsunekawa
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Publication number: 20040134783Abstract: 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: ApplicationFiled: October 20, 2003Publication date: July 15, 2004Applicant: Hitachi, Ltd.Inventors: Kunio Harada, Masao Kamahori, Hideki Kambara, Sumio Yamaguchi, Sukeyoshi Tsunekawa
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Patent number: 6674171Abstract: 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: GrantFiled: August 1, 2002Date of Patent: January 6, 2004Assignee: Renesas Technology Corp.Inventor: Sumio Yamaguchi
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Patent number: 6629660Abstract: 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: GrantFiled: April 27, 2000Date of Patent: October 7, 2003Assignee: Toray Industries, Inc.Inventors: Sumio Yamaguchi, Tamotsu Suzuki, Hirotaka Nakajima, Katsumi Sonoyama, Kazumasa Yamashita, Teruaki Saijo
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Publication number: 20030137049Abstract: 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: ApplicationFiled: August 1, 2002Publication date: July 24, 2003Applicant: Mitsubishi Denki Kabushiki KaishaInventor: Sumio Yamaguchi
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Publication number: 20020028308Abstract: 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: ApplicationFiled: September 4, 2001Publication date: March 7, 2002Applicant: Hitachi, Ltd.Inventors: Kunio Harada, Masao Kamahori, Hideki Kambara, Sumio Yamaguchi, Sukeyoshi Tsunekawa
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Patent number: 5565708Abstract: 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: GrantFiled: May 15, 1995Date of Patent: October 15, 1996Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Akihiko Ohsaki, Sumio Yamaguchi, Atsushi Ishii, Kazuyoshi Maekawa, Masahiko Fujisawa
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Patent number: 5246526Abstract: 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: GrantFiled: July 2, 1992Date of Patent: September 21, 1993Assignee: Hitachi, Ltd.Inventors: Sumio Yamaguchi, Akio Inada, Kenichi Kawasumi
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Patent number: 4580522Abstract: 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: GrantFiled: February 27, 1985Date of Patent: April 8, 1986Assignee: Hitachi, Ltd.Inventors: Kazumasa Fujioka, Sumio Okuno, Muneo Mizumoto, Hideaki Kamohara, Shinjiro Ueda, Takao Kuroda, Sumio Yamaguchi, Naoyuki Tamura
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Patent number: 4563900Abstract: 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: GrantFiled: April 26, 1984Date of Patent: January 14, 1986Assignee: Hitachi, Ltd.Inventors: Kunio Harada, Sumio Yamaguchi, Hiroshi Kanda, Isao Ishikawa, Yuzuru Ohji
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Patent number: 4542712Abstract: 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: GrantFiled: June 22, 1984Date of Patent: September 24, 1985Assignee: Hitachi, Ltd.Inventors: Kazuo Sato, Sumio Yamaguchi, Shigeo Kato, Yasuhide Matsumura, Muneo Mizumoto, Sumio Okuno, Naoyuki Tamura
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Patent number: 4169695Abstract: 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: GrantFiled: August 11, 1977Date of Patent: October 2, 1979Assignee: Jidosha Kiki Co., Ltd.Inventors: Naosuke Masuda, Sumio Yamaguchi