Patents by Inventor Masanari Kimoto

Masanari Kimoto 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: 11060201
    Abstract: An electroplating apparatus is provided that minimizes unplated regions when an alloy plating layer is provided on the surface of a thread on a steel pipe. An electroplating apparatus (10) includes an electrode (1), sealing members (2, 3), and a plating-solution supply unit (4). The electrode (1) faces the thread (Tm). The sealing member (2) is positioned within the steel pipe (P1). The sealing member (3) is attached to the end portion of the steel pipe (P1) and, together with the sealing member (2), forms a receiving space (8). The plating-solution supply unit (4) includes a plurality of nozzles (42). The nozzles (42) are positioned within the receiving space (8) and adjacent one end of the thread (Tm) and arranged around the pipe axis of the steel pipe (P1). The plating-solution supply unit (4) injects a plating solution between the thread (Tm) and electrode (1) through the nozzles (42).
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: July 13, 2021
    Assignees: Nippon Steel Corporation, Vallourec Oil and Gas France
    Inventors: Masanari Kimoto, Kazuya Ishii, Masahiro Oshima
  • Publication number: 20200400255
    Abstract: The threaded connection for pipes includes a pin, a box and a Zn—Ni alloy plating layer. The pin has a pin-side contact surface that includes a pin-side thread part. The box has a box-side contact surface that includes a box-side thread part. The Zn—Ni alloy plating layer is formed on at least one of the pin-side contact surface and the box-side contact surface. The Zn—Ni alloy plating layer is consisting of Zn, Ni, trace amount of Cr and impurities. The trace amount of Cr content of the Zn—Ni alloy plating layer is 5.0×10 counts/sec or more in terms of Cr intensity as measured by secondary ion mass spectrometry using O2+ ions as bombarding ions.
    Type: Application
    Filed: August 30, 2018
    Publication date: December 24, 2020
    Applicants: Nippon Steel Corporation, Vallourec Oil and Gas France
    Inventors: Masanari KIMOTO, Masahiro OSHIMA
  • Publication number: 20200318250
    Abstract: An electroplating apparatus is provided that minimizes unplated regions when an alloy plating layer is provided on the surface of a thread on a steel pipe. An electroplating apparatus (10) includes an electrode (1), sealing members (2, 3), and a plating-solution supply unit (4). The electrode (1) faces the thread (Tm). The sealing member (2) is positioned within the steel pipe (P1). The sealing member (3) is attached to the end portion of the steel pipe (P1) and, together with the sealing member (2), forms a receiving space (8). The plating-solution supply unit (4) includes a plurality of nozzles (42). The nozzles (42) are positioned within the receiving space (8) and adjacent one end of the thread (Tm) and arranged around the pipe axis of the steel pipe (P1). The plating-solution supply unit (4) injects a plating solution between the thread (Tm) and electrode (1) through the nozzles (42).
    Type: Application
    Filed: June 18, 2020
    Publication date: October 8, 2020
    Inventors: Masanari Kimoto, Kazuya Ishii, Masahiro Oshima
  • Publication number: 20200292107
    Abstract: A threaded connection for pipe includes a pin and a box. The threaded connection for pipe includes a Zn—Ni alloy plated layer and a solid lubricant coating. The Zn—Ni alloy plated layer is formed on a contact surface of at least one of the pin and the box and contains 10 to 16 mass % of Ni. The solid lubricant coating is formed on the Zn—Ni alloy plated layer. The contact surface on which the Zn—Ni alloy plated layer is formed is ground. Now define arithmetic average roughness of the surface of the Zn—Ni alloy plated layer as Ra1, and arithmetic average roughness of the contact surface as Ra2. Ra1 ranges from 0.1 to 3.2 ?m. Ra1 is more than Ra2.
    Type: Application
    Filed: October 12, 2018
    Publication date: September 17, 2020
    Inventors: Masahiro Oshima, Masanari Kimoto
  • Publication number: 20200190683
    Abstract: There is provided a threaded connection for pipe having an excellent galling resistance and an excellent appearance. A threaded connection for pipe according to the present embodiment includes a pin (3) and a box (4). The pin (3) and the box (4) have contact surfaces (34) and (44) that include thread parts (31) and (41), metal seal parts (32) and (42), and shoulder parts (33) and (43), respectively. The threaded connection for pipe includes a Zn—Ni alloy plating layer (100) on the contact surface (34) or (44) of at least one of the pin (3) and the box (4). The Zn—Ni alloy plating layer (100) contains Cu. The Cu content of the Zn—Ni alloy plating layer (100) is 4.5% by mass or less (zero excluded).
    Type: Application
    Filed: October 2, 2017
    Publication date: June 18, 2020
    Inventors: Masanari Kimoto, Masahiro Oshima
  • Publication number: 20200072405
    Abstract: This invention provides a threaded connection for oil country tubular goods that exhibits excellent corrosion resistance and galling resistance, and a method for producing the threaded connection for oil country tubular goods. The method includes a Zn—Ni alloy plating layer formation step of forming a Zn—Ni alloy plating layer, and a chromate coating formation step of forming a chromate coating after the Zn—Ni alloy plating layer formation step. The chromate coating formation step includes a chromate treatment step and a drying step. The chromate coating formation step satisfy one or more conditions selected from the following conditions 1 to 3. Condition 1: stirring speed of the chromating solution in the chromate treatment step: a linear speed of 0.5 m/s or more; Condition 2: chromate treatment time in the chromate treatment step: less than 50 seconds; and Condition 3: drying temperature in the drying step: 60° C. or less.
    Type: Application
    Filed: May 10, 2018
    Publication date: March 5, 2020
    Inventors: Masanari Kimoto, Masahiro Oshima
  • Patent number: 10370770
    Abstract: Provided is a plating solution for a threaded connection used for forming a plating film excellent in galling resistance, crevice corrosion resistance, and exposure corrosion resistance. The plating solution contains no cyanide, but contains copper pyrophosphate, tin pyrophosphate, zinc pyrophosphate, pyrophosphate as a metal complexing agent, and a sulfur-containing compound of 40 g/L or less (excluding 0). The sulfur-containing compound includes: a mercapto compound and a sulfide compound defined by Chemical Formula (1); a dimer formed through a disulfide bond of the mercapto compounds; and one or more types of salts thereof: RS—(CHX1)m—(CHX2)n—CHX3X4??(1), where each of m and n is an integer of 1 or 0; each of X1, X2, X3 and X4 is any one of hydrogen, OH, NH2, SO3H, and CO2H, but excluding that X1, X2, X3, and X4 are all hydrogen; and R is any one of hydrogen, a methyl group, and an ethyl group.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: August 6, 2019
    Assignees: NIPPON STEEL CORPORATION, VALLOUREC OIL AND GAS FRANCE
    Inventors: Masanari Kimoto, Kazuya Ishii, Kunio Goto, Tatsuya Yamamoto, Masahiro Oshima, Seiichiro Nakao, Daisuke Yamaguchi
  • Patent number: 10359133
    Abstract: An objective of the present invention is to provide a threaded connection for pipe or tube having an excellent anti-misalignment property and an appropriate shouldering torque, and further having excellent corrosion resistance and an excellent adhesiveness of a solid lubricant coating, and to provide a method of producing the threaded connection for pipe or tube. The threaded connection for pipe or tube according to the present embodiment includes a pin and a box. The pin and the box have contact surfaces including thread portions and unthreaded metal contact portions. The threaded connection for pipe or tube comprises an alloy plating layer consisting of a Zn—Ni alloy on the contact surface of at least one of the pin and the box, a phosphating layer, and a solid lubricant coating. These are stacked in an order of the alloy plating layer, phosphating layer, and the solid lubricant coating, from a contact surface side.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: July 23, 2019
    Assignees: Nippon Steel & Sumitomo Metal Corporation, Vallourec Oil and Gas France
    Inventors: Kunio Goto, Masanari Kimoto
  • Patent number: 10305119
    Abstract: In a titanium material or a titanium alloy material, in an oxide film formed on a surface of a titanium or a titanium alloy, the composition ratio of TiO (ITiO/(ITi+ITiO)×100 found from the maximum intensity of the X-ray diffraction peaks of TiO (ITiO) and the maximum intensity of the X-ray diffraction peaks of metal titanium (ITi) in X-ray diffraction measured at an incident angle to the surface of 0.3° is 0.5% or more. A titanium material or a titanium alloy material, and a fuel cell separator and a polymer electrolyte fuel cell having good contact-to-carbon electrical conductivity and good durability can be provided.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: May 28, 2019
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kazuhiro Takahashi, Taku Kagawa, Masanari Kimoto, Junko Imamura, Kiyonori Tokuno, Atsuhiko Kuroda
  • Publication number: 20190078225
    Abstract: An electroplating apparatus is provided that minimizes unplated regions when an alloy plating layer is provided on the surface of a thread on a steel pipe. An electroplating apparatus (10) includes an electrode (1), sealing members (2, 3), and a plating-solution supply unit (4). The electrode (1) faces the thread (Tm). The sealing member (2) is positioned within the steel pipe (P1). The sealing member (3) is attached to the end portion of the steel pipe (P1) and, together with the sealing member (2), forms a receiving space (8). The plating-solution supply unit (4) includes a plurality of nozzles (42). The nozzles (42) are positioned within the receiving space (8) and adjacent one end of the thread (Tm) and arranged around the pipe axis of the steel pipe (P1). The plating-solution supply unit (4) injects a plating solution between the thread (Tm) and electrode (1) through the nozzles (42).
    Type: Application
    Filed: March 2, 2017
    Publication date: March 14, 2019
    Inventors: Masanari Kimoto, Kazuya Ishii, Masahiro Oshima
  • Patent number: 10230115
    Abstract: Provided is a metallic material including: a base metal made of a metal; a metal compound layer stacked on a surface of the base metal, the metal compound layer mainly containing a compound of at least one transition metal in the fourth period and oxygen; a platinum group portion dispersed on a surface of the metal compound layer, the platinum group portion mainly containing at least one platinum group element; and a platinum group compound coating film which covers the platinum group portion, the platinum group compound coating film mainly containing a compound of at least one platinum group element and oxygen. The at least one platinum group element contained in the platinum group portion is preferably one or more of Ru, Rh, Os, and Ir.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: March 12, 2019
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yoshitaka Nishiyama, Junko Imamura, Yasuhiro Masaki, Masanari Kimoto
  • Publication number: 20190003620
    Abstract: An objective of the present invention is to provide a threaded connection for pipe or tube having an excellent anti-misalignment property and an appropriate shouldering torque, and further having excellent corrosion resistance and an excellent adhesiveness of a solid lubricant coating, and to provide a method of producing the threaded connection for pipe or tube. The threaded connection for pipe or tube according to the present embodiment includes a pin (13) and a box (14). The pin (13) and the box (14) have contact surfaces including thread portions (15) and (20) and unthreaded metal contact portions. The threaded connection for pipe or tube comprises an alloy plating layer (21) consisting of a Zn—Ni alloy on the contact surface of at least one of the pin (13) and the box (14), a phosphating layer (22), and a solid lubricant coating (23). These are stacked in an order of the alloy plating layer (21), phosphating layer (22), and the solid lubricant coating (23), from a contact surface side.
    Type: Application
    Filed: December 16, 2016
    Publication date: January 3, 2019
    Inventors: Kunio Goto, Masanari Kimoto
  • Patent number: 10033052
    Abstract: The composition ratio of a titanium hydride [ITi—H/(ITi+ITi—H)]×100 found from the maximum intensity of metal titanium (ITi) and the maximum intensity of the titanium hydride (ITi—H) of the X-ray diffraction peaks measured at a surface of a titanium or a titanium alloy at an incident angle to the surface of 0.3° is 55% or more, a titanium oxide film is formed on an outermost surface of the titanium or the titanium alloy, and C is at 10 atomic % or less, N is at 1 atomic % or less, and B is at 1 atomic % or less in a position where the surface has been subjected to sputtering of 5 nm with argon. The titanium oxide film is formed by performing stabilization treatment after performing passivation treatment in prescribed aqueous solutions, and has a thickness of 3 to 10 nm.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: July 24, 2018
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kazuhiro Takahashi, Taku Kagawa, Masanari Kimoto, Junko Imamura, Kiyonori Tokuno, Atsuhiko Kuroda
  • Patent number: 9957631
    Abstract: An electroplating apparatus applies an electroplated coating to a female thread formed on a pipe end portion of a steel pipe. The apparatus includes an inner seal member, a capsule, a discharge outlet, an opening, a cylindrical insoluble anode, a plating solution supply tube, and a plurality of nozzles. The seal member divides the interior of the steel pipe at a location longitudinally inward of a region on which the female thread is formed. The capsule is attached to the pipe end portion. The outlet is designed to discharge a plating solution inside the capsule therefrom. The opening facilitates discharge of the solution inside the capsule. The anode is disposed in the inside of the pipe end portion. The supply tube projects from an end of the anode. The nozzles eject a plating solution between the outer surface of the anode and the inner surface of the pipe end portion.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: May 1, 2018
    Assignees: NIPPON STEEL & SUMITOMO METAL CORPORATION, VALLOUREC OIL AND GAS FRANCE
    Inventors: Masanari Kimoto, Kazuya Ishii, Masahiro Oshima, Tatsuya Yamamoto
  • Patent number: 9790610
    Abstract: An electro plating device includes a pipe inside seal mechanism which occludes an inner channel of a steel pipe, a tubular insoluble electrode which is disposed in a pipe end so as to be opposite to a female screw, a plating solution feed mechanism which includes a plurality of nozzles which extend radially with a pipe axis of the steel pipe as a center, and a pipe end seal mechanism which accommodates the nozzles thereinside and is mounted to the pipe end, when viewed in the pipe axial direction, a tip of each of the nozzles is positioned between the female screw and the insoluble electrode, and each of the nozzles injects the plating solution toward a direction which intersects an extension direction of the nozzle, the direction being a rotational direction of a clockwise direction or a counterclockwise direction in which the pipe axis is the center.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: October 17, 2017
    Assignees: NIPPON STEEL & SUMITOMO METAL CORPORATION, VALLOUREC OIL AND GAS FRANCE
    Inventors: Masanari Kimoto, Kazuya Ishii, Tatsuya Yamamoto
  • Publication number: 20170237084
    Abstract: Provided is a metallic material including: a base metal made of a metal; a metal compound layer stacked on a surface of the base metal, the metal compound layer mainly containing a compound of at least one transition metal in the fourth period and oxygen; a platinum group portion dispersed on a surface of the metal compound layer, the platinum group portion mainly containing at least one platinum group element; and a platinum group compound coating film which covers the platinum group portion, the platinum group compound coating film mainly containing a compound of at least one platinum group element and oxygen. The at least one platinum group element contained in the platinum group portion is preferably one or more of Ru, Rh, Os, and Ir.
    Type: Application
    Filed: August 18, 2015
    Publication date: August 17, 2017
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yoshitaka NISHIYAMA, Junko IMAMURA, Yasuhiro MASAKI, Masanari KIMOTO
  • Publication number: 20170077527
    Abstract: A titanium material comprises: a plate-like matrix made of titanium or a titanium alloy and having a rough surface on which minute protrusions are formed; a surface oxide coating film formed along the rough surface and containing one or more titanium oxides; and a tip covering formed on the surface oxide coating film in an area comprising a tip of the minute protrusion and containing one or more noble metals. A composition ratio of TiO [ITiO/(ITi+ITiO)×100] determined from maximum intensity ITiO of diffraction peaks of TiO and maximum intensity ITi of diffraction peaks of metal Ti in an X-ray diffraction intensity curve of the surface oxide coating film is more than or equal to 0.5%.
    Type: Application
    Filed: June 1, 2015
    Publication date: March 16, 2017
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Junko IMAMURA, Kiyonori TOKUNO, Taku KAGAWA, Masanari KIMOTO, Yasuhiro MASAKI
  • Publication number: 20170051421
    Abstract: Provided is a plating solution for a threaded connection used for forming a plating film excellent in galling resistance, crevice corrosion resistance, and exposure corrosion resistance. The plating solution contains no cyanide, but contains copper pyrophosphate, tin pyrophosphate, zinc pyrophosphate, pyrophosphate as a metal complexing agent, and a sulfur-containing compound of 40 g/L or less (excluding 0). The sulfur-containing compound includes: a mercapto compound and a sulfide compound defined by Chemical Formula (1); a dimer formed through a disulfide bond of the mercapto compounds; and one or more types of salts thereof: RS—(CHX1)m—(CHX2)n—CHX3X4??(1), where each of m and n is an integer of 1 or 0; each of X1, X2, X3 and X4 is any one of hydrogen, OH, NH2, SO3H, and CO2H, but excluding that X1, X2, X3, and X4 are all hydrogen; and R is any one of hydrogen, a methyl group, and an ethyl group.
    Type: Application
    Filed: May 15, 2015
    Publication date: February 23, 2017
    Inventors: Masanari KIMOTO, Kazuya ISHII, Kunio GOTO, Tatsuya YAMAMOTO, Masahiro OSHIMA, Seiichiro NAKAO, Daisuke YAMAGUCHI
  • Publication number: 20170051422
    Abstract: Provided is a plating solution for a threaded connection for pipe or tube used for forming a plating film excellent in galling resistance, crevice corrosion resistance, and exposure corrosion resistance. The plating solution for a threaded connection for pipe or tube of the present embodiment contains no cyanide, but contains: a water-soluble copper salt; a water-soluble tin salt; a water-soluble bismuth salt; a free acid; and a thiourea-based compound of 10 g/L or less (excluding 0) that is represented by Chemical Formula (1): X1X2N—C(?S)—NX3X4??(1), where each of X1, X2, X3, and X4 is any one of hydrogen, an alkyl group, an allyl group, a tolyl group, or a group represented by Chemical Formula (2), but excluding that X1, X2, X3, and X4 are all hydrogen: —CH2—CH2—S—CH2—CH2—X5??(2), where X5 is OH or NH2.
    Type: Application
    Filed: May 15, 2015
    Publication date: February 23, 2017
    Inventors: Masanari KIMOTO, Kazuya ISHII, Kunio GOTO, Tatsuya YAMAMOTO, Masahiro OSHIMA, Seiichiro NAKAO, Daisuke YAMAGUCHI
  • Publication number: 20160336600
    Abstract: A composite metal foil in which the surface of a titanium foil or a titanium alloy foil is coated with an electrically conductive layer; in the composite metal foil, an electrically conductive film in which TiO is dispersed in an oxide film and the TiO composition ratio [ITiO/(ITi+ITiO)] found from the maximum intensity of the diffraction peaks of TiO (ITiO) and the maximum intensity of the diffraction peaks of metal titanium (ITi) out of the X-ray diffraction peaks of the surface of the titanium foil or the titanium alloy foil is 0.5% or more is formed on the surface of the titanium foil or the titanium alloy foil, and the electrically conductive layer consists of, in mass %, silver particles with an average particle size of not less than 10 nm and not more than 500 nm: 20% to 90%, a dispersant: 0.2% to 1.0%, and the balance: an acrylic resin or an epoxy resin, and has a thickness of 5 to 50 ?m.
    Type: Application
    Filed: April 2, 2015
    Publication date: November 17, 2016
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Taku KAGAWA, Kazuhiro TAKAHASHI, Takashi IIJIMA, Masanari KIMOTO, Junko IMAMURA, Kiyonori TOKUNO, Atsuhiko KURODA