Patents by Inventor Kunihiro Fukui
Kunihiro Fukui 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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Patent number: 8276946Abstract: A threaded joint for steel tubes has a contact surface (30) including a threaded portion and a non-threaded metal-to-metal contact portion. The contact surface of at least one of a pin and a box of the joint is coated with a first plating layer (34) made of a Cu—Zn alloy or a Cu—Zn-M1 alloy (wherein M1 is at least one element selected from Sn, Bi, and In). An undercoat (32) of one or both of a Ni plating layer (32a) and a Cu plating layer (32b) and an overcoat of a Sn-M2 alloy plating layer (36) (wherein M2 is one or more elements selected from Bi, In, Ni, Zn, and Cu) may be formed below and above the first layer, respectively. A solid lubricating coating (38a) and a viscous liquid or semisolid lubricating coating (38b) may also be formed atop the plating layer as a lubricating coating (38).Type: GrantFiled: September 1, 2009Date of Patent: October 2, 2012Assignees: Sumitomo Metal Industries, Ltd., Vallourec Mannesmann Oil & Gas FranceInventors: Masanari Kimoto, Kunio Goto, Masaru Takahashi, Kunihiro Fukui, Shigeo Nagasaku, Ryuichi Imai, Shigeo Onishi, Hiroaki Ikegami
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Patent number: 7998329Abstract: A porous nickel foil for a negative electrode of an alkaline battery formed by an electrolytic deposition method, wherein the porous nickel foil is flexible and has a thickness of 10-35 ?m and a Vickers hardness of 70-130. An electrodeposition drum for producing porous metal foil by an electrolytic deposition method including a drum having a surface onto which metal foil is deposited, a plurality of holes formed in the surface and an insulating resin filled in the holes, wherein the ratio of depth L and diameter D (L/D) of the hole is at least 1 and no clearance, into which deposited metal otherwise cuts in a wedge shape, exists at the boundary between the insulating resin filled in the hole and an opening edge of the hole.Type: GrantFiled: May 13, 2003Date of Patent: August 16, 2011Assignee: Panasonic CorporationInventors: Toshiaki Shiota, Ryoichi Noumi, Kunihiro Fukui, Masanari Kimoto
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Publication number: 20100059986Abstract: A pin-box type threaded joint for steel tubes having a contact surface (30) including a threaded portion and a nonthreaded metal-to-metal contact portion has improved leak resistance, galling resistance, and corrosion resistance particularly to crevice corrosion. The contact surface of at least one of the pin and the box is coated with a first plating layer (34) made of a Cu—Zn alloy or a Cu—Zn-M1 alloy (wherein M1 is at least one element selected from Sn, Bi, and In). Optionally, an undercoat (32) of one or both of a Ni plating layer (32a) and a Cu plating layer (32b) and an overcoat of a Sn-M2 alloy plating layer (36) (wherein M2 is one or more elements selected from Bi, In, Ni, Zn, and Cu) may be formed below and above the first layer, respectively. A solid lubricating coating (38a) and a viscous liquid or semisolid lubricating coating (38b) may also be formed atop the plating layer as a lubricating coating (38).Type: ApplicationFiled: September 1, 2009Publication date: March 11, 2010Inventors: Masanari Kimoto, Kunio Goto, Masaru Takahashi, Kunihiro Fukui, Shigeo Nagasaku, Ryuichi Imai, Shigeo Onishi, Hiroaki Ikegami
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Patent number: 7641169Abstract: A preparing method for a substrate for a stamper where the entirety of the metal rolled plate can be used as the material for the substrate so that a high yield in the preparation can be maintained is provided. A metal is rolled so as to generate a metal rolled plate, the metal rolled plate that is generated is cut to a predetermined size, and metal plating is operated on the front surface or the rear surface, or both the front and rear surfaces, of the metal rolled plate that has been cut to a predetermined size, and then, a polishing process is operated. A target plate thickness that is set when the metal rolled plate is rolled is smaller than the plate thickness that is required at the time of completion of the polishing process.Type: GrantFiled: November 29, 2005Date of Patent: January 5, 2010Assignee: Sumitomo Metal Industries, Ltd.Inventors: Futoshi Katsuki, Kunihiro Fukui, Atsuhiko Kuroda
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Patent number: 7399535Abstract: A hot press-formed article having improved corrosion resistance and coating adhesion when coated is obtained by hot press forming of a zinc-based plated steel material. It has a zinc-based plating layer comprising an iron-zinc solid solution phase and atop it a zinc oxide layer. The average thickness of the zinc oxide layer which is the outermost layer is at most 2 ?m. A hot press-formed article having a good appearance and excellent corrosion resistance, coating adhesion, post-coating corrosion resistance, and weldability has a layer (2) consisting essentially of an iron-zinc solid solution phase atop a base material steel sheet (1). It also has a zinc oxide layer (3) with an average thickness of at most 5 ?m as an uppermost layer, but it does not have a substantial amount of an iron-zinc intermetallic compound phase. The total amount of Al contained in the iron-zinc solid solution layer (2) and the zinc oxide layer (3) is at most 0.Type: GrantFiled: October 21, 2005Date of Patent: July 15, 2008Assignees: Sumitomo Metal Industries, Ltd., Toyota Jodosha Kabushiki Kaisha, Toyoda Iron Works Co., Ltd.Inventors: Yukihiro Yoshikawa, Kazuhito Imai, Kunihiro Fukui, Tamotsu Toki, Shuntaro Sudo, Akira Obayashi, Masanobu Ichikawa
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Patent number: 7314560Abstract: The present invention provides a cyclone separator made up of a cyclone portion for generating an eddy flow at a given flow rate by feeding a liquid containing a fine substance from liquid discharge passageways, for transferring the fine substance to an outer circumferential side by applying a centrifugal force to discharge the fine substance-free liquid from a liquid flow-out passageway, and for precipitating the fine substance by decelerating the eddy flow. The liquid discharge passageways are disposed at plural sites and the cyclone separator further contains a liquid pressurizing chamber formed around the plural liquid discharge passageways in communication therewith, and a liquid introduction passageway for introducing the liquid containing the fine substance into the liquid pressurizing chamber.Type: GrantFiled: April 8, 2004Date of Patent: January 1, 2008Inventors: Hideto Yoshida, Kunihiro Fukui, Kazuaki Takahashi, Junichi Nakamura
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Patent number: 7311824Abstract: The present invention provides a fine particle separation treatment system containing: a storage tank for storing a solution; a solution circulating passageway for circulating the solution in the storage tank, a cyclone separator disposed in the solution circulating passageway for separating fine particles in the solution and a particle trap box for trapping the precipitated fine particles in the cyclone portion through a communication hole. An electrode rod is disposed at the center of the particle trap box, and the fine particles are electrically separated by applying a potential between the electrode rod and an electrode of the particle trap box.Type: GrantFiled: April 8, 2004Date of Patent: December 25, 2007Inventors: Hideto Yoshida, Kunihiro Fukui, Kazuaki Takahashi, Junichi Nakamura
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Publication number: 20060131474Abstract: A preparing method for a substrate for a stamper where the entirety of the metal rolled plate can be used as the material for the substrate so that a high yield in the preparation can be maintained is provided. A metal is rolled so as to generate a metal rolled plate, the metal rolled plate that is generated is cut to a predetermined size, and metal plating is operated on the front surface or the rear surface, or both the front and rear surfaces, of the metal rolled plate that has been cut to a predetermined size, and then, a polishing process is operated. A target plate thickness that is set when the metal rolled plate is rolled is smaller than the plate thickness that is required at the time of completion of the polishing process.Type: ApplicationFiled: November 29, 2005Publication date: June 22, 2006Inventors: Futoshi Katsuki, Kunihiro Fukui, Atsuhiko Kuroda
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Publication number: 20060127768Abstract: A porous nickel foil for a negative electrode of an alkaline battery formed by an electrolytic deposition method, wherein the porous nickel foil is flexible and has a thickness of 10-35 ?m and a Vickers hardness of 70-130. An electrodeposition drum for producing porous metal foil by an electrolytic deposition method including a drum having a surface onto which metal foil is deposited, a plurality of holes formed in the surface and an insulating resin filled in the holes, wherein the ratio of depth L and diameter D (L/D) of the hole is at least 1 and no clearance, into which deposited metal otherwise cuts in a wedge shape, exists at the boundary between the insulating resin filled in the hole and an opening edge of the hole.Type: ApplicationFiled: January 26, 2006Publication date: June 15, 2006Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Toshiaki Shiota, Ryoichi Noumi, Kunihiro Fukui, Masanari Kimoto
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Publication number: 20060121305Abstract: A hot press-formed article having improved corrosion resistance and coating adhesion when coated is obtained by hot press forming of a zinc-based plated steel material. It has a zinc-based plating layer comprising an iron-zinc solid solution phase and atop it a zinc oxide layer. The average thickness of the zinc oxide layer which is the outermost layer is at most 2 ?m. A hot press-formed article having a good appearance and excellent corrosion resistance, coating adhesion, post-coating corrosion resistance, and weldability has a layer (2) consisting essentially of an iron-zinc solid solution phase atop a base material steel sheet (1). It also has a zinc oxide layer (3) with an average thickness of at most 5 ?m as an uppermost layer, but it does not have a substantial amount of an iron-zinc intermetallic compound phase. The total amount of Al contained in the iron-zinc solid solution layer (2) and the zinc oxide layer (3) is at most 0.Type: ApplicationFiled: October 21, 2005Publication date: June 8, 2006Inventors: Yukihiro Yoshikawa, Kazuhito Imai, Kunihiro Fukui, Tamotsu Toki, Shuntaro Sudo, Akira Obayashi, Masanobu Ichikawa
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Publication number: 20050087080Abstract: The present invention provides a fine particle separation treatment system comprising: a storage tank for storing a solution; a solution circulating passageway for circulating the solution in the storage tank, and a cyclone separator disposed in the solution circulating passageway for separating fine particles in the solution.Type: ApplicationFiled: April 8, 2004Publication date: April 28, 2005Inventors: Hideto Yoshida, Kunihiro Fukui, Kazuaki Takahashi, Junichi Nakamura
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Publication number: 20050077234Abstract: The present invention provides a cyclone separator comprising a cyclone portion for generating an eddy flow at a given flow rate by feeding a liquid containing a fine substance from liquid discharge passageways, for transferring the fine substance to an outer side by applying a centrifugal force to issue the fine substance-free liquid from a liquid flow-out passageway, and for precipitating the fine substance by decelerating the eddy flow. The liquid discharge passageways are disposed at plural sites; and the cyclone separator further comprises a liquid pressurizing chamber formed around the plural liquid discharge passageways in communication therewith; and a liquid introduction passageway for introducing the liquid containing the fine substance into the liquid pressurizing chamber.Type: ApplicationFiled: April 8, 2004Publication date: April 14, 2005Inventors: Hideto Yoshida, Kunihiro Fukui, Kazuaki Takahashi, Junichi Nakamura
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Patent number: 6878458Abstract: A metal foil for a current collector of a secondary battery formed by electrodeposition and has a thickness (T) of 8 to 40 ?m, the metal foil satisfying the following formulae: 4.9×108?T×S×Y?31×108 4.5???(0.0005×T2)?15 where S is a breaking strength (MPa), ? is a tensile elongation (%) and Y is a Young's modulus (MPa). This foil is preferably a nickel foil and is manufactured by softening or annealing the metal foil obtained by electrodeposition. Thereby, a metal foil for a negative electrode of a secondary battery is obtained with an excellent capability of supporting the active material and large electric conductivity.Type: GrantFiled: September 12, 2002Date of Patent: April 12, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hirohisa Seto, Tadayuki Tamaki, Toshiaki Shiota, Ryoichi Noumi, Kunihiro Fukui, Masanari Kimoto
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Publication number: 20040226825Abstract: A porous nickel foil for a negative electrode of an alkaline battery formed by an electrolytic deposition method, wherein the porous nickel foil is flexible and has a thickness of 10-35 &mgr;m and a Vickers hardness of 70-130. An electrodeposition drum for producing porous metal foil by an electrolytic deposition method including a drum having a surface onto which metal foil is deposited, a plurality of holes formed in the surface and an insulating resin filled in the holes, wherein the ratio of depth L and diameter D (L/D) of the hole is at least 1 and no clearance, into which deposited metal otherwise cuts in a wedge shape, exists at the boundary between the insulating resin filled in the hole and an opening edge of the hole.Type: ApplicationFiled: May 13, 2003Publication date: November 18, 2004Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Toshiaki Shiota, Ryoichi Noumi, Kunihiro Fukui, Masanari Kimoto
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Publication number: 20040157128Abstract: A metal foil for a current collector of a secondary battery formed by electrodeposition and has a thickness (T) of 8 to 40 &mgr;m, the metal foil satisfying the following formulae:Type: ApplicationFiled: August 26, 2003Publication date: August 12, 2004Inventors: Hirohisa Seto, Tadayuki Tamaki, Toshiaki Shiota, Ryoichi Noumi, Kunihiro Fukui, Masanari Kimoto
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Patent number: 5584428Abstract: Clad pipe having an inner pipe and an outer pipe metallurgically bonded to each other is manufactured by a process comprising the steps of: (a) preparing an inner pipe and an outer pipe made of different metallic materials, the outer pipe having an inner diameter larger than the outer diameter of the inner pipe; (b) forming an Ni-B layer by electroplating or electroless plating on the surface of one of the pipes facing the other pipe when the two pipes are assembled, the Ni-B layer having a thickness of 2-100 .mu.m and consisting essentially, on a weight basis, of B: 0.5%-7%, Fe: 0%-30%, P: 0%-7%, and a balance of Ni and inevitable impurities; (c) assembling the two pipes by inserting the inner pipe into the outer pipe; (d) subjecting the assembled pipes to cold working for reduction in diameter to such a degree that the outer diameter of the inner pipe is reduced by from 0.Type: GrantFiled: February 8, 1995Date of Patent: December 17, 1996Assignee: Sumitomo Metal Industries, Ltd.Inventors: Atsushi Satoh, Hiroshi Okamoto, Kunihiro Fukui, Jun-ichi Uchida, Kazuhiro Ogawa, Takao Taka, Munekatsu Furugen, Masanari Kimoto
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Patent number: 5356724Abstract: A material for producing far-infrared radiation is disclosed. The material comprises a substrate and an Al--Mn alloy-derived oxide surface layer on the substrate, the oxide surface layer being porous with an average pore diameter of 0.01-2.0 micrometers and a porosity of 10.sup.3 -10.sup.12 pores/cm.sup.2, the weight ratio of Mn/Al of the oxide surface layer being 0.001-2.0, and the thickness of the oxide surface layer being 0.1-100 micrometers.Type: GrantFiled: January 15, 1993Date of Patent: October 18, 1994Assignee: Sumitomo Metal Industries, Ltd.Inventors: Tetsuaki Tsuda, Yasuhiro Yamamoto, Junichi Uchida, Hirohisa Seto, Kunihiro Fukui, Shinya Hikino
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Patent number: 4871194Abstract: The present invention relates to an oil well pipe joint having improved resistance to galling and to a process for manufacturing the same, which comprises a porous blast-plated layer provided at least on a metal sealing portion by blasting soft metal particles such as of zinc and aluminum, particularly discrete particles each comprising an iron or iron alloy core covered by a zinc or a zinc alloy coating with an iron-zinc alloy layer intervening therebetween.Type: GrantFiled: December 31, 1987Date of Patent: October 3, 1989Assignee: Sumitomo Metal Industries, Ltd.Inventors: Hisakazu Kawashima, Yoshiyasu Morita, Minoru Nishihara, Tetsuzo Arai, Kunihiro Fukui
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Patent number: 4630849Abstract: An oil well pipe joint comprising a metal-to-metal sealing portion without thread is disclosed. A metal-plated or resin-coated layer exhibiting improved resistance to galling is provided on the outer peripheral surface of a thread-free lip portion which constitutes part of the metal-to-metal sealing portion on an externally-threaded member. At the metal sealing portion, satisfactory sealing properties are maintained under severe corrosive conditions, enabling the joint to be connected and disconnected over 10 times, and usually over 25 times.Type: GrantFiled: March 27, 1985Date of Patent: December 23, 1986Assignee: Sumitomo Metal Industries, Ltd.Inventors: Kunihiro Fukui, Minoru Nishihara, Toshiro Mase, Yoshiyasu Morita, Hisakazu Kawashima
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Patent number: 4474651Abstract: A joint for used in connecting oil well casing and/or tubing and method of producing same are disclosed. The joint with improved metal-to-metal sealing properties as well as improved resistance to galling is made of an alloy steel containing 10% or more by weight of Cr and comprises a metal sealing portion and a threaded portion provided with an activating layer of a metal or an alloy selected iron, nickel, zinc, cobalt, copper, manganese, chromium and alloys thereof, and an electrodeposited layer of a metal or an alloy selected from iron, copper, zinc, chromium, nickel, and alloys thereof.Type: GrantFiled: August 13, 1982Date of Patent: October 2, 1984Assignee: Sumitomo Metal Industries, Ltd.Inventors: Akihiro Yauchi, Minoru Nishihara, Kunihiro Fukui, Hisakazu Kawashima, Yoshiyasu Morita