Patents by Inventor Hiroshi Kamio

Hiroshi Kamio 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: 10822679
    Abstract: Provided is a stainless steel product having a chemical composition consisting of C: less than 0.05%, Si: 4.0 to 7.0%, Mn: 1.50% or less, P: 0.030% or less, S: 0.030% or less, Cr: 10.0 to 20.0%, Ni: 11.0 to 17.0%, Cu: 0.15 to 1.5%, Mo: 0.15 to 1.5%, Nb: 0.5 to 1.2%, Sol. Al: 0 to 0.10%, Mg: 0 to 0.01%, and balance Fe and impurities, wherein MgO.Al2O3 inclusions constitute an area fraction of 0.02% or less. This stainless steel product has excellent corrosion resistance to hot concentrated sulfuric acid of approximately 93 to 99% concentration, for example, and also is economically advantageous.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: November 3, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Hideya Kaminaka, Shinya Yamamoto, Hiroshi Kamio, Kouichi Takeuchi
  • Publication number: 20180230580
    Abstract: Provided is a stainless steel product having a chemical composition consisting of C: less than 0.05%, Si: 4.0 to 7.0%, Mn: 1.50% or less, P: 0.030% or less, S: 0.030% or less, Cr: 10.0 to 20.0%, Ni: 11.0 to 17.0%, Cu: 0.15 to 1.5%, Mo: 0.15 to 1.5%, Nb: 0.5 to 1.2%, Sol. Al: 0 to 0.10%, Mg: 0 to 0.01%, and balance Fe and impurities, wherein MgO.Al2O3 inclusions constitute an area fraction of 0.02% or less. This stainless steel product has excellent corrosion resistance to hot concentrated sulfuric acid of approximately 93 to 99% concentration, for example, and also is economically advantageous.
    Type: Application
    Filed: September 30, 2015
    Publication date: August 16, 2018
    Inventors: Hideya KAMINAKA, Shinya YAMAMOTO, Hiroshi KAMIO, Kouichi TAKEUCHI
  • Publication number: 20170327915
    Abstract: A duplex stainless steel is provided that has a chemical composition comprising, by mass %, C: 0.03% or less, Si: 1.0% or less, Mn: 1.0% or less, P: 0.04% or less, S: 0.01% or less, Cu: 0.1 to 1.0%, Ni: 5.0 to 7.5%, Cr: 22.0 to 26.0%, W: 6.0 to 12.0%, N: 0.20 to 0.32%, Mo: 0.01% or less, and a balance: Fe and impurities, in which a metal micro-structure contains, by area ratio, 0.40 to 0.60 of an ?-phase, with a balance being a ?-phase and 0.01 or less of other phases.
    Type: Application
    Filed: October 23, 2015
    Publication date: November 16, 2017
    Inventors: Hiroshi KAMIO, Hideya KAMINAKA, Junko IMAMURA, Kouichi TAKEUCHI
  • Publication number: 20150240332
    Abstract: To provide a titanium alloy having corrosion resistance that is as high as or higher than before, and high corrosion resistance in a bromine-ion-containing environment, the alloy being able to be manufactured at low cost. [Solution] Provided is a titanium alloy to be used in a bromine-ion-containing environment, the titanium alloy consisting of, in mass %, a platinum group element: greater than or equal to 0.01% and less than or equal to 0.10%, a rare earth element: greater than or equal to 0.001% and less than 0.02%, O: greater than or equal to 0% and less than 0.1%, and the balance: Ti and impurities. The titanium alloy may contain, instead of part of Ti, one or more selected from the group consisting of Ni, Co, Mo, V, Cr, and W. The platinum group element is desirably contained in, in mass %, greater than or equal to 0.01% and less than or equal to 0.05%. The rare earth element is desirably contained in, in mass %, greater than or equal to 0.001% and less than 0.02%.
    Type: Application
    Filed: January 24, 2014
    Publication date: August 27, 2015
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Hideya Kaminaka, Hiroshi Kamio, Masaru Abe, Kouichi Takeuchi
  • Publication number: 20150167121
    Abstract: [Object] To provide a titanium alloy material containing a platinum group metal, the titanium alloy material being able to sufficiently suppress corrosion accompanying surface roughening. [Solution] Provided is a titanium alloy material including a platinum group metal. When an average value of intensity of background signals in surface mapping analysis using an EPMA surface analysis apparatus is N and N+3N1/2 is maximum intensity of the background signal of an Fe or S characteristic X-ray, an area ratio at which a signal of an Fe or S characteristic X-ray exceeding the maximum intensity is obtained is 0.1% or less.
    Type: Application
    Filed: August 12, 2013
    Publication date: June 18, 2015
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Hideya Kaminaka, Kouichi Takeuchi, Hiroshi Kamio, Satoshi Matsumoto, Norio Inoue, Masaru Abe
  • Patent number: 8125734
    Abstract: Embodiments of the present invention provide a magnetic slider of which terminals have a sufficiently large process margin for the laser condition in the SBB process. According to one embodiment, a magnetic slider comprises: a read element and a write element; plural wiring lines which are connected to the read element and the write element; a protective film which covers the read element, the write element and the plural-wiring lines; plural slider pads formed on the protective film; and plural studs which respectively connect the slider pads and the wiring lines and are covered by the protective film, wherein each of the slider pads comprises a chromium film, a nickel iron film and a gold film, the nickel iron film is formed between the chromium film and the gold film, and the chromium film is formed between the nickel iron film and one of the studs and is in contact with the protective film.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: February 28, 2012
    Assignee: Hitachi Global Storage Technologies, Netherlands B.V.
    Inventors: Hiroshi Umezaki, Seiji Nakagawa, Yuhsuke Matsumoto, Yoshihisa Takeo, Gen Oikawa, Hiroshi Kamio
  • Publication number: 20080062565
    Abstract: Embodiments of the present invention provide a magnetic slider of which terminals have a sufficiently large process margin for the laser condition in the SBB process. According to one embodiment, a magnetic slider comprises: a read element and a write element; plural wiring lines which are connected to the read element and the write element; a protective film which covers the read element, the write element and the plural-wiring lines; plural slider pads formed on the protective film; and plural studs which respectively connect the slider pads and the wiring lines and are covered by the protective film, wherein each of the slider pads comprises a chromium film, a nickel iron film and a gold film, the nickel iron film is formed between the chromium film and the gold film, and the chromium film is formed between the nickel iron film and one of the studs and is in contact with the protective film.
    Type: Application
    Filed: September 5, 2007
    Publication date: March 13, 2008
    Applicant: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Hiroshi Umezaki, Seiji Nakagawa, Yuhsuke Matsumoto, Yoshihisa Takeo, Gen Oikawa, Hiroshi Kamio
  • Patent number: 6319622
    Abstract: Magnetoresistive and spin valve heads have a layered structure. Common to each of the layered structures of these heads is the combination of a soft-magnetic layer of essentially NiFe near a spacer layer of essentially Ta, which is used for insuring (111) crystal orientation of the NiFe layer. An isolate layer is interposed between the spacer layer and the soft-magnetic layer to prevent a diffusion boundary from being created at the interface of these layers which tends to degrade the soft-magnetic property of the NiFe layer, especially when the thickness of the soft-magnetic layer is 10 and nm or less.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: November 20, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Satoshi Shigematsu, Takao Imagawa, Koichi Nishioka, Hiroshi Kamio, Katsuhisa Usami
  • Patent number: 6172859
    Abstract: A magnetoresistive head in which Barkhausen noise is substantially suppressed and a variation in reproduction is minimized, and a magnetic disk apparatus using the same magnetic head have been provided. The feature of the magnetic head and the magnetic disk apparatus of the invention resides in the provision of the longitudinal bias layer which comprises a hard magnetic thin film formed on an underlayer made of either of a ferromagnetic thin film having a body-centered cubic lattice crystal structure formed of body-centered cells, an amorphous ferromagnetic thin film or antiferromagnetic thin film having a body-centered cubic lattice crystal structure formed of body-centered cells.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: January 9, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Katsuro Watanabe, Takashi Kawabe, Shigeru Tadokoro, Hiroshi Kamio, Takao Imagawa
  • Patent number: 6157526
    Abstract: A magnetoresistive head in which Barkhausen noise is substantially suppressed and a variation in reproduction is minimized, and a magnetic disk apparatus using the same magnetic head have been provided. The feature of the magnetic head and the magnetic disk apparatus of the invention resides in the provision of a longitudinal bias layer which comprises a hard magnetic thin film formed on an underlayer made of either a ferromagnetic thin film having a body-centered cubic lattice crystal structure, or an amorphous ferromagnetic thin film or antiferromagnetic thin film having a body-centered cubic lattice crystal structure.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: December 5, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Katsuro Watanabe, Takashi Kawabe, Shigeru Tadokoro, Hiroshi Kamio, Takao Imagawa
  • Patent number: 6120919
    Abstract: Magnetoresistive and spin valve heads have a layered structure. Common to each of the layered structures of these heads is the combination of a soft-magnetic layer of essentially NiFe near a spacer layer of essentially Ta, which is used for insuring (111) crystal orientation of the NiFe layer. An isolate layer is interposed between the spacer layer and the soft-magnetic layer to prevent a diffusion boundary from being created at the interface of these layers which tends to degrade the soft-magnetic property of the NiFe layer, especially when the thickness of the soft-magnetic layer is 10 and nm or less.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: September 19, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Satoshi Shigematsu, Takao Imagawa, Koichi Nishioka, Hiroshi Kamio, Katsuhisa Usami
  • Patent number: 5995338
    Abstract: A magnetoresistive head in which Barkhausen noise is substantially suppressed and a variation in reproduction is minimized, and a magnetic disk apparatus using the same magnetic head have been provided. The feature of the magnetic head and the magnetic disk apparatus of the invention resides in the provision of a longitudinal bias layer which comprises a hard magnetic thin film formed on an underlayer made of either a ferromagnetic thin film having a body-centered cubic lattice crystal structure, or an amorphous ferromagnetic thin film or antiferromagnetic thin film having a body-centered cubic lattice crystal structure.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: November 30, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Katsuro Watanabe, Takashi Kawabe, Shigeru Tadokoro, Hiroshi Kamio, Takao Imagawa
  • Patent number: 5969910
    Abstract: A magnetic head having a magnetoresistive head having a spin valve structure in which a composite magnetic layer of a rotatable magnetizing direction layer and oxide or the like is used for a lower shielding layer and/or an upper shielding layer and a magnetic disk apparatus using such a head are disclosed. According to the invention, a magnetic head having a head of a magnetoresistance effect type generating a high output with low noises and a magnetic disk apparatus having a large quantity with high recording density can be realized.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: October 19, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Takao Imagawa, Shigeru Tadokoro, Yasunari Tajima, Hiroshi Kamio
  • Patent number: 5795407
    Abstract: To improve the water resisting secondary adhesion of paint films to zinc phosphate conversion coatings on aluminum, the initially formed conversion coating is treated by spraying with a second liquid treatment composition that either is itself a liquid composition capable of forming a zinc phosphate conver- sion coating on aluminum or is made by diluting such a conversion coating forming composition.
    Type: Grant
    Filed: November 8, 1996
    Date of Patent: August 18, 1998
    Assignee: Henkel Corporation
    Inventors: Hiroshi Ishii, Hiroshi Kamio
  • Patent number: 5312600
    Abstract: An apparatus for making a silicon single crystal large in diameter dependently on the Czochralski process, wherein appropriate openings (11) are provided on the warmth keeping over (10) so as to prevent an undesirable influence caused by atmospheric gas. The major elements of the apparatus are that the sum of areas of the openings (11) is larger than the area of gap (18) formed between the lower end of the warmth keeping cover (10) and the level of silicon solution, and that the warmth keeping cover and the heat insulating member (12) are composed of sheet metal.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: May 17, 1994
    Assignee: Toshiba Ceramics Co.
    Inventors: Hiroshi Kamio, Kenji Araki, Yoshinobu Shima, Makoto Suzuki, Takeshi Kaneto, Yasumitsu Nakahama, Takeshi Suzuki, Akio Fujibayashi
  • Patent number: 5279798
    Abstract: A silicon single crystal manufacturing apparatus whereby a silicon single crystal having a large diameter and stable composition is pulled at a high rate in accordance with the Czochralski method which rotates a crucible. The apparatus features that a partition member is of a crucible type, that the partition member above the surface of molten silicon has a thickness which is not less than 3 mm and not greater than 80% of the thickness of the partition member below the molten silicon surface, that the bottom portion of the partition member is closely fixed to the bottom portion of the crucible and that the partition member is supported on a cylindrical quartz member.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: January 18, 1994
    Assignee: NKK Corporation
    Inventors: Takeshi Keneto, Hiroshi Kamio
  • Patent number: 5143704
    Abstract: In a silicon single crystal manufacturing apparatus of the type which continuously feeds starting material, a metallic heat keeping plate is arranged to cover a partition member dividing molten silicon into a single crystal growing section and a material melting section within a quartz crucible and an upper side of the material melting section. The metallic heat keeping plate is provided for the purpose of preventing the occurrence of solidification of the molten silicon on the inner side of the partition member and preventing excessive cooling of a silicon single crystal. The metallic heat keeping plate has a thickness of 3 mm or less and its material is tantalum or molybdenum. Further, the heat keeping plate includes a straight body portion formed with a plurality of openings for adjusting the temperature of the single crystal.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: September 1, 1992
    Assignee: NKK Corporation
    Inventors: Yasumitsu Nakaham, Kenji Araki, Hiroshi Kamio
  • Patent number: 5139750
    Abstract: A silicon single crystal manufacturing apparatus which pulls a large-diameter silicon single crystal with improved yield and efficiency according to the rotary CZ method.As a means of preventing the solidification of molten silicon in the vicinity of a partition member, that is, one of factors which deteriorate the yield and efficiency, a heat shielding member having a predetermined position and shielding width is arranged to face a meniscus position of molten silicon thereby shielding the heat radiation from the meniscus portion.Its shape is a cylindrical shape, truncated-cone shape or a shape formed at its cylindrical bottom with a flange having a central opening.Its material primarily consists of a metal such as molybdenum or tantalum or an electric resistance heater.
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: August 18, 1992
    Assignee: NKK Corporation
    Inventors: Yoshinobu Shima, Kenji Araki, Hiroshi Kamio, Makoto Suzuki
  • Patent number: 5126114
    Abstract: According to the present invention, the inside of a crucible in which a molten raw material is placed is partitioned off with a partition ring so that a pulled single crystal is surrounded and the molten raw material may be moved and granular silicon is supplied to the outside of the partition ring, thereby to form the whole surface of outside molten liquid as a granular silicon soluble region so as to maintain the molten liquid surface on the inside of the partition ring at almost a constant level, and also to set the temperature of the molten liquid on the outside of the partition ring higher than the temperature of the inside thereof at least by 10.degree. C. or higher by covering the partition ring and the molten liquid surface on the outside thereof with a heat keeping board.
    Type: Grant
    Filed: January 3, 1990
    Date of Patent: June 30, 1992
    Assignee: NKK Corporation
    Inventors: Hiroshi Kamio, Kenji Araki, Yoshinobu Shima, Makoto Suzuki, Akira Kazama, Shigetake Horie, Yasumitsu Nakahama
  • Patent number: 5087321
    Abstract: Method for manufacturing a large columner silicon single crystal having a diameter of 12 cm-30 cm by pulling up a crystal, growing, and rotating it in one direction, from molten silicon material in a quartz crucible rotating in the other direction. The inside of the quartz crucible is divided into two sections--the peripheral section for feeding and melting raw materials and the central section for growing and pulling the crystal--by means of a cylindrical partition. The material feeding and melting section and the partition are sufficiently covered by an insulating board to reduce radiant energy heat loss and to keep the temperature at least above the freezing point of the molten materials in order to prevent the molten materials from solidifying at or around the inner wall of the cylindrical partition.
    Type: Grant
    Filed: January 3, 1990
    Date of Patent: February 11, 1992
    Assignee: NKK Corporation
    Inventors: Hiroshi Kamio, Kenji Araki, Yoshinobu Shima, Makoto Suzuki, Akira Kazama, Shigetake Horie