Patents by Inventor Yuji Ikegami

Yuji Ikegami 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: 9528173
    Abstract: High-Mn austenitic stainless steels having a chemical composition comprising C: 0.02-0.12 mass %, Si: 0.05-1.5 mass %, Mn: 10.0-22.0 mass %, S: not more than 0.0028 mass %, Ni: 4.0-12.0 mass %, Cr: 14.0-25.0 mass % and N: 0.07-0.17 mass % with the balance being Fe and inevitable impurities, provided that these components are contained so that ? cal represented by the following equation is not more than 5.5%: ? cal (mass %)=(Cr+0.48Si)?(Ni+0.11Mn?0.0101Mn2+26.4C+20.1N)?4.7, wherein each element symbol in the equation is a content of the respective element (mass %), and having a magnetic permeability of not more than 1.003 under a magnetic field of 200 kA/m.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: December 27, 2016
    Assignee: NIPPON YAKIN KOGYO CO., LTD.
    Inventors: Shigeru Hirata, Yuji Ikegami, Kazuhiro Yamakawa
  • Publication number: 20140332117
    Abstract: High-Mn austenitic stainless steels having a chemical composition comprising C: 0.02-0.12 mass %, Si: 0.05-1.5 mass %, Mn: 10.0-22.0 mass %, S: not more than 0.0028 mass %, Ni: 4.0-12.0 mass %, Cr: 14.0-25.0 mass % and N: 0.07-0.17 mass % with the balance being Fe and inevitable impurities, provided that these components are contained so that ? cal represented by the following equation is not more than 5.5%: ? cal (mass %)=(Cr+0.48Si)?(Ni+0.11Mn?0.0101Mn2+26.4C+20.1N)?4.7, wherein each element symbol in the equation is a content of the respective element (mass %), and having a magnetic permeability of not more than 1.003 under a magnetic field of 200 kA/m.
    Type: Application
    Filed: February 21, 2014
    Publication date: November 13, 2014
    Applicant: NIPPON YAKIN KOGYO CO., LTD.
    Inventors: Shigeru HIRATA, Yuji IKEGAMI, Kazuhiro YAMAKAWA
  • Publication number: 20140166158
    Abstract: High-Mn austenitic stainless steels having a chemical composition comprising C: 0.02-0.12 mass %, Si: 0.05-1.5 mass %, Mn: 10.0-22.0 mass %, S: not more than 0.0028 mass %, Ni: 4.0-12.0 mass %, Cr: 14.0-25.0 mass % and N: 0.07-0.17 mass % with the balance being Fe and inevitable impurities, provided that these components are contained so that ? cal represented by the following equation is not more than 5.5%: ? cal (mass %)=(Cr+0.48Si)?(Ni+0.11Mn?0.0101Mn2+26.4C+20.1N)?4.7, wherein each element symbol in the equation is a content of the respective element (mass %), and having a magnetic permeability of not more than 1.003 under a magnetic field of 200 kA/m.
    Type: Application
    Filed: February 21, 2014
    Publication date: June 19, 2014
    Applicant: NIPPON YAKIN KOGYO CO., LTD.
    Inventors: Shigeru HIRATA, Yuji IKEGAMI, Kazuhiro YAMAKAWA
  • Patent number: 8737227
    Abstract: A packet transmission device includes a buffer stores packet data in any of queues, a queue manager outputs queue-status signals indicating whether or not transmittable packet data exists in the corresponding one of the queues, a bandwidth controller outputs token-status signals indicating whether or not an amount of the tokens accumulated at a certain period for the corresponding queue is larger than a token threshold provided for the corresponding queue, a queue selector preferentially selects any queue whose duration time of a transmittable state in which the corresponding queue status signal indicates that transmittable packet data exists in the corresponding queue and the corresponding token-status signal indicates that the amount of the accumulated tokens is larger than the token threshold provided for the corresponding queue is greater than a duration-time threshold provided for the corresponding queue, and a buffer reader controls reading of the packet data from the selected queue.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: May 27, 2014
    Assignee: Fujitsu Limited
    Inventors: Akihiro Hata, Atsushi Kitada, Yuji Ikegami
  • Patent number: 8703047
    Abstract: As a stainless steel for a metal part for clothing ornament capable of working into a complicated form part and having such nonmagnetic properties that the worked part can cope with the detection through needle detecting device is provided a high-Mn austenitic stainless steel having a chemical composition comprising C: 0.02-0.12 mass %, Si: 0.05-1.5 mass %, Mn: 10.0-22.0 mass %, S: not more than 0.03 mass %, Ni: 4.0-12.0 mass %, Cr: 14.0-25.0 mass % and N: 0.07-0.17 mass %, provided that these components are contained so that ? cal (mass %) represented by the following equation (1) is not more than 5.5 mass %: ? cal (mass %)=(Cr+0.48Si+1.21Mo+2.2(V+Ti)+0.15Nb)?(Ni+0.47Cu+0.11Mn?0.0101Mn2+26.4C+20.1N)?4.7??(1) and having a magnetic permeability of not more than 1.003 under a magnetic field of 200 kA/m.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: April 22, 2014
    Assignee: Nippon Yakin Kogyo Co., Ltd.
    Inventors: Shigeru Hirata, Yuji Ikegami, Kazuhiro Yamakawa
  • Publication number: 20130028082
    Abstract: A packet transmission device includes a buffer stores packet data in any of queues, a queue manager outputs queue-status signals indicating whether or not transmittable packet data exists in the corresponding one of the queues, a bandwidth controller outputs token-status signals indicating whether or not an amount of the tokens accumulated at a certain period for the corresponding queue is larger than a token threshold provided for the corresponding queue, a queue selector preferentially selects any queue whose duration time of a transmittable state in which the corresponding queue status signal indicates that transmittable packet data exists in the corresponding queue and the corresponding token-status signal indicates that the amount of the accumulated tokens is larger than the token threshold provided for the corresponding queue is greater than a duration-time threshold provided for the corresponding queue, and a buffer reader controls reading of the packet data from the selected queue.
    Type: Application
    Filed: July 23, 2012
    Publication date: January 31, 2013
    Applicant: FUJITSU LIMITED
    Inventors: Akihiro HATA, Atsushi KITADA, Yuji IKEGAMI
  • Publication number: 20110286879
    Abstract: As a stainless steel for a metal part for clothing ornament capable of working into a complicated form part and having such nonmagnetic properties that the worked part can cope with the detection through needle detecting device is provided a high-Mn austenitic stainless steel having a chemical composition comprising C: 0.02-0.12 mass %, Si: 0.05-1.5 mass %, Mn: 10.0-22.0 mass %, S: not more than 0.03 mass %, Ni: 4.0-12.0 mass %, Cr: 14.0-25.0 mass % and N: 0.07-0.17 mass %, provided that these components are contained so that ? cal (mass %) represented by the following equation (1) is not more than 5.5 mass %: ? cal (mass %)=(Cr+0.48Si+1.21Mo+2.2(V+Ti)+0.15Nb)?(Ni+0.47Cu+0.11Mn?0.0101Mn2+26.4C+20.1N)?4.7??(1) and having a magnetic permeability of not more than 1.003 under a magnetic field of 200 kA/m.
    Type: Application
    Filed: February 26, 2010
    Publication date: November 24, 2011
    Applicant: NIPPON YAKIN KOGYO CO., LTD.
    Inventors: Shigeru Hirata, Yuji Ikegami, Kazuhiro Yamakawa
  • Patent number: 6741391
    Abstract: There is provided a three-dimensional object observing microscope which can easily observe a three-dimensional object in a three-dimensional manner. A three-dimensional object observing microscope comprising a table on which a three-dimensional object is placed, an imaging part which consists of an imaging lens and an imaging camera for imaging this three-dimensional object from an inclined upper position, and a casing which supports the imaging part rotatably in a horizontal direction and also integrally supports the table and the imaging part.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: May 25, 2004
    Assignee: Sony Corporation
    Inventors: Eiji Ishihara, Shinsuke Hiraoka, Yuji Ikegami, Takashi Mizusawa, Tozaburo Nishimura
  • Patent number: 6483118
    Abstract: The present invention provides a positron source essentially consisting of a carbon member having 18F bound onto the surface thereof, a method of a preparing the same, and an automated system for supplying the same. In the present invention, the positron source is prepared by irradiating a solution 35 containing both H218O and a small amount of natural fluorine ions with a beam of charged particles to generate 18F, and then passing an electric current through the solution 35 using a carbon member 40 as an anode to cause to bind the generated 18F onto the surface of the carbon member 40.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: November 19, 2002
    Assignee: Riken
    Inventors: Ichiro Fujiwara, Yoshiko Ito, Ren Iwata, Toshio Hyodo, Yasushige Yano, Akira Goto, Yuji Ikegami, Yoshio Nomiya
  • Publication number: 20010040223
    Abstract: The present invention provides a positron source essentially consisting of a carbon member having 18F bound onto the surface thereof, a method of preparing the same, and an automated system for supplying the same. In the present invention, the positron source is prepared by irradiating a solution 35 containing both H218O and a small amount of natural fluorine ions with a beam of charged particles to generate 18F, and then passing an electric current through the solution 35 using a carbon member 40 as an anode to cause to bind the generated 18F onto the surface of the carbon member 40.
    Type: Application
    Filed: July 19, 2001
    Publication date: November 15, 2001
    Inventors: Ichiro Fujiwara, Yoshiko Ito, Ren Iwata, Toshio Hyodo, Yasushige Yano, Akira Goto, Yuji Ikegami, Yoshio Nomiya
  • Patent number: 6289071
    Abstract: The present invention provides a positron source essentially consisting of a carbon member having 18F bound onto the surface thereof, a method of preparing the same, and an automated system for supplying the same. In the present invention, the positron source is prepared by irradiating a solution containing both H218O and a small amount of natural fluorine ions with a beam of charged particles to generate 18F, and then passing an electric current through the solution using a carbon member 40 as an anode to cause to bind the generated 18F onto the surface of the carbon member.
    Type: Grant
    Filed: September 1, 1999
    Date of Patent: September 11, 2001
    Assignee: Riken
    Inventors: Ichiro Fujiwara, Yoshiko Ito, Ren Iwata, Toshio Hyodo, Yasushige Yano, Akira Goto, Yuji Ikegami, Yoshio Nomiya
  • Patent number: 5686044
    Abstract: An austenitic stainless steel for press forming has considerably excellent deep drawability and bulging property as compared with those of the conventional one, which comprises C: 0.01-0.10 wt %, Si: not more than 1.0 wt %, Mn: not more than 3.0 wt %, Ni: 6.0-10.0 wt %, Cr: 15.0-19.0 wt %, Cu: 1.0-4.0 wt %, Al: 0.2-2.5 wt %, N: not more than 0.05 wt %, and if necessary, Mo: 0.03-3.0 wt % and B: 0.0010-0.020 wt %, and is adjusted to satisfy anyone of Ni equivalent: 21.0-23.0, crystal grain size number (N) of not less than 8, cleanness of 0.020%, low Si content and (C+N) amount .gtoreq.0.04.
    Type: Grant
    Filed: March 25, 1996
    Date of Patent: November 11, 1997
    Assignee: Nippon Yakin Kogyo Co., Ltd.
    Inventors: Yuji Ikegami, Qinzhong Zhang
  • Patent number: 5480608
    Abstract: A ferritic stainless steel having excellent oxidation resistance, toughness and hot workability contains 0.001-0.20% of at least one of Ca, Mg and Ba as an amount of [Ca]+[Mg]+1/5[Ba], and La: 0.06-0.5% and Ce: 0.002-0.050% in addition to C, Si, Mn, Ni, Cr, Al, Ti and N as a main component provided that these components satisfy relations of the following equations (1)-(3):[S].ltoreq.[Ca]+[Mg]+1/5[Ba] (1)[La]/[Ce].gtoreq.5 (2)Ti.gtoreq.
    Type: Grant
    Filed: December 13, 1994
    Date of Patent: January 2, 1996
    Assignee: Nippon Yakin Kogyo Co., Ltd.
    Inventors: Masaomi Tsuda, Yoshito Fujiwara, Yuji Ikegami, Masao Sato, Hiroyuki Fujii
  • Patent number: 5303117
    Abstract: An electrostatic positioner with one or more first electrodes for producing forces to confine a charged specimen in the direction perpendicular to a center axis and second electrodes for producing forces to confine the charged specimen in the direction of the center axis.
    Type: Grant
    Filed: June 9, 1993
    Date of Patent: April 12, 1994
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Masaaki Ogihara, Michio Aoyama, Tsumoru Fujii, Yuji Ikegami, Joji Shinohara
  • Patent number: 5055145
    Abstract: This invention concerns a production process of ferrite stainless steel covered with oxide whisker suitable for metal catalyst supports in automobile's exhaust gas converters, which comprises controlling the continued growth of alumina whiskers on ferrite stainless steel by heating ferrite stainless steel having alumina whiskers on the surface to 1000.degree.-1200.degree. C. for about 1 minute to 1 hour in a non-oxidizing atmosphere.
    Type: Grant
    Filed: August 15, 1989
    Date of Patent: October 8, 1991
    Assignee: Nippon Yakin Kogyo Co., Ltd.
    Inventors: Yuji Ikegami, Shinichi Sasayama, Noboru Tachino, Takeshi Kamiya
  • Patent number: 5017544
    Abstract: This invention concerns a production process of ferrite stainless steel covered with oxide whisker suitable for metal catalyst supports in automobile's exhaust gas converters, which comprises plating a ferrite stainless steel with aluminum, diffusing the aluminum into the stainless steel by heating in vacuum or in a non-oxidizing gas so that the surface of the ferrite stainless steel turns into an aluminum-enriched ferrite phase, and allowing oxide whisker to grow there by heating in the air.
    Type: Grant
    Filed: November 29, 1988
    Date of Patent: May 21, 1991
    Assignee: Nippon Yakin Kogyo Co., Ltd.
    Inventors: Yuji Ikegami, Shinichi Sasayama, Noboru Tachino, Takeshi Kamiya
  • Patent number: 5002923
    Abstract: Disclosed is a catalyst support for catalytic reactors for cleaning exhaust gas, characterized in that flat steel band plates and corrugated steel band plates, each of which is heat-resistance and covered with catalyst, are superposed in such a way that one comes on top of the other alternately, and brazed together on their center line running along the longitudinal direction thereof.
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: March 26, 1991
    Assignee: Nippon Yakin Kogyo Co., Ltd.
    Inventors: Yoshikazu Koshiba, Takeshi Kamiya, Yuji Ikegami, Noboru Tachino
  • Patent number: 4987000
    Abstract: This invention concerns a mechanical plating process comprising: shaving metal off from a pure metal or alloy block and plating an object to be plated with the shaved off metal by the use of at least a single metal brush, wherein the metal block and the metal brush are in frictional contact with each other, and the object to be plated and the metal brush are concurrently in frictional contact with each other.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: January 22, 1991
    Assignee: Nippon Yakin Kogyo Co., Ltd.
    Inventors: Yoshikazu Koshiba, Yuji Ikegami, Noboru Tachino, Takeshi Kamiya
  • Patent number: 4677252
    Abstract: A circuit board comprises a rigid metal substrate, a conductive metal layer formed into a predetermined circuit pattern, and a resinous layer interposed between the metal substrate and the metal layer for electrically insulating and bonding the metal substrate and the metal layer, the conductive metal layer having an elongation at break of not less than 15%, and the resinous layer comprising a first resinous layer having a volume resistivity of not less than 10.sup.10 .OMEGA.. cm, and a second resinous layer having an elongation at break of not less than 100%. The circuit board has a desired dielectric strength between the metal substrate and the conductive metal layer and can be bent without resulting disconnection in the metal layer or the like.
    Type: Grant
    Filed: November 18, 1986
    Date of Patent: June 30, 1987
    Assignee: Sony Corporation
    Inventors: Satoshi Takahashi, Akira Tsutsumi, Junji Suzuki, Hiroshi Kumakura, Takao Ito, Kenji Ohsawa, Yuji Ikegami, Muneyuki Haruki, Nobuyuki Yasuda, Masayuki Ohta