Patents by Inventor Junji Ishii

Junji Ishii 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: 11772160
    Abstract: To provide a fine nickel powder for an internal electrode paste of an electronic component, the nickel powder obtained by a wet method and having high crystallinity, excellent sintering characteristics, and heat-shrinking characteristics. The nickel powder is obtained by precipitating nickel by a reduction reaction in a reaction solution including at least water-soluble nickel salt, salt of metal nobler than nickel, hydrazine as a reducing agent, and alkali metal hydroxide as a pH adjusting agent and water; the reaction solution is prepared by mixing a nickel salt solution including the water-soluble nickel salt and the salt of metal nobler than nickel with a mixed reducing agent solution including hydrazine and alkali metal hydroxide; and the hydrazine is additionally added to the reaction solution after a reduction reaction initiates in the reaction solution.
    Type: Grant
    Filed: May 13, 2022
    Date of Patent: October 3, 2023
    Assignees: SUMITOMO METAL MINING CO., LTD., MURATA MANUFACTURING CO., LTD.
    Inventors: Junji Ishii, Shingo Murakami, Hiroyuki Tanaka, Takahiro Kamata, Toshiaki Terao, Masaya Yukinobu, Yuji Watanabe, Tsutomu Tanimitsu, Yoshiyuki Kunifusa, Haruo Nishiyama
  • Publication number: 20220274162
    Abstract: To provide a fine nickel powder for an internal electrode paste of an electronic component, the nickel powder obtained by a wet method and having high crystallinity, excellent sintering characteristics, and heat-shrinking characteristics. The nickel powder is obtained by precipitating nickel by a reduction reaction in a reaction solution including at least water-soluble nickel salt, salt of metal nobler than nickel, hydrazine as a reducing agent, and alkali metal hydroxide as a pH adjusting agent and water; the reaction solution is prepared by mixing a nickel salt solution including the water-soluble nickel salt and the salt of metal nobler than nickel with a mixed reducing agent solution including hydrazine and alkali metal hydroxide; and the hydrazine is additionally added to the reaction solution after a reduction reaction initiates in the reaction solution.
    Type: Application
    Filed: May 13, 2022
    Publication date: September 1, 2022
    Inventors: Junji ISHII, Shingo MURAKAMI, Hiroyuki TANAKA, Takahiro KAMATA, Toshiaki TERAO, Masaya YUKINOBU, Yuji WATANABE, Tsutomu TANIMITSU, Yoshiyuki KUNIFUSA, Haruo NISHIYAMA
  • Patent number: 11389875
    Abstract: The purpose of the present invention is to provide a process for producing nickel powder capable of obtaining fine nickel powder in wet process, and also, capable of decreasing content of impurities by medicament (additive) used in crystallization of nickel powder which is reduction reaction. 1.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: July 19, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Junji Ishii, Hiroyuki Tanaka, Masaya Yukinobu
  • Patent number: 11376658
    Abstract: To provide a fine nickel powder for an internal electrode paste of an electronic component, the nickel powder obtained by a wet method and having high crystallinity, excellent sintering characteristics, and heat-shrinking characteristics. The nickel powder is obtained by precipitating nickel by a reduction reaction in a reaction solution including at least water-soluble nickel salt, salt of metal nobler than nickel, hydrazine as a reducing agent, and alkali metal hydroxide as a pH adjusting agent and water; the reaction solution is prepared by mixing a nickel salt solution including the water-soluble nickel salt and the salt of metal nobler than nickel with a mixed reducing agent solution including hydrazine and alkali metal hydroxide; and the hydrazine is additionally added to the reaction solution after a reduction reaction initiates in the reaction solution.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: July 5, 2022
    Assignees: SUMITOMO METAL MINING CO., LTD., MURATA MANUFACTURING CO., LTD.
    Inventors: Junji Ishii, Shingo Murakami, Hiroyuki Tanaka, Takahiro Kamata, Toshiaki Terao, Masaya Yukinobu, Yuji Watanabe, Tsutomu Tanimitsu, Yoshiyuki Kunifusa, Haruo Nishiyama
  • Patent number: 10850330
    Abstract: A process for producing nickel powder capable of obtaining inexpensive, and also, high-performance nickel powder, even when using wet process. A process for producing nickel powder, including a crystallization step for obtaining nickel crystal powder by reductive reaction in reaction solution in which at least water-soluble nickel salt, metal salt of metal more noble than nickel, reducing agent, alkali hydroxide, amine compound, and water are mixed, wherein the reducing agent to be mixed in the crystallization step is hydrazine, the amine compound is autolysis inhibitor of hydrazine, and contains two or more primary amino groups in molecule, or contains one primary amino group and one or more secondary amino groups in molecule, and ratio of molar number of the amine compound with respect to molar number of nickel in the reaction solution is in a range of 0.01 mol % to 5 mol %.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: December 1, 2020
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Junji Ishii, Hiroyuki Tanaka, Shingo Murakami, Yuki Kumagai, Masaya Yukinobu, Yoshiaki Matsumura
  • Publication number: 20190388974
    Abstract: A process for producing nickel powder capable of obtaining fine nickel powder in wet process and capable of decreasing content of impurities by medicament used in crystallization of nickel powder. A process for producing nickel powder, including a crystallization step for obtaining nickel crystal powder by reduction reaction in reaction solution in which water-soluble nickel salt, alkali hydroxide and the sulfur-containing compound is a compound having any of sulfur-containing functional group structure represented by —SH, sulfur-containing functional group structure represented by —S—S—, sulfur-containing functional group structure, and a ratio of substance quantity of the sulfur-containing compound and nickel in the reaction solution, a multiplication factor of the sulfur-containing functional group of the sulfur-containing compound, and a ratio of substance quantity of the metal salt of metal more noble than nickel and nickel is in a range of 0.1?A*B?0.75C+30 (0?C?100).
    Type: Application
    Filed: December 5, 2017
    Publication date: December 26, 2019
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Junji ISHII, Hiroyuki TANAKA, Masaya YUKINOBU
  • Publication number: 20190084040
    Abstract: To provide a fine nickel powder for an internal electrode paste of an electronic component, the nickel powder obtained by a wet method and having high crystallinity, excellent sintering characteristics, and heat-shrinking characteristics. The nickel powder is obtained by precipitating nickel by a reduction reaction in a reaction solution including at least water-soluble nickel salt, salt of metal nobler than nickel, hydrazine as a reducing agent, and alkali metal hydroxide as a pH adjusting agent and water; the reaction solution is prepared by mixing a nickel salt solution including the water-soluble nickel salt and the salt of metal nobler than nickel with a mixed reducing agent solution including hydrazine and alkali metal hydroxide; and the hydrazine is additionally added to the reaction solution after a reduction reaction initiates in the reaction solution.
    Type: Application
    Filed: March 14, 2017
    Publication date: March 21, 2019
    Inventors: Junji ISHII, Shingo MURAKAMI, Hiroyuki TANAKA, Takahiro KAMATA, Toshiaki TERAO, Masaya YUKINOBU, Yuji WATANABE, Tsutomu TANIMITSU, Yoshiyuki KUNIFUSA, Haruo NISHIYAMA
  • Publication number: 20180304375
    Abstract: A process for producing nickel powder capable of obtaining inexpensive, and also, high-performance nickel powder, even when using wet process. A process for producing nickel powder, including a crystallization step for obtaining nickel crystal powder by reductive reaction in reaction solution in which at least water-soluble nickel salt, metal salt of metal more noble than nickel, reducing agent, alkali hydroxide, amine compound, and water are mixed, wherein the reducing agent to be mixed in the crystallization step is hydrazine, the amine compound is autolysis inhibitor of hydrazine, and contains two or more primary amino groups in molecule, or contains one primary amino group and one or more secondary amino groups in molecule, and ratio of molar number of the amine compound with respect to molar number of nickel in the reaction solution is in a range of 0.01 mol % to 5 mol %.
    Type: Application
    Filed: October 14, 2016
    Publication date: October 25, 2018
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Junji ISHII, Hiroyuki TANAKA, Shingo MURAKAMI, Yuki KUMAGAI, Masaya YUKINOBU, Yoshiaki MATSUMURA
  • Patent number: 9506540
    Abstract: There is provided a pedal apparatus in which connection bracket is prevented from falling off from a pedal arm even if there is a welding defect. A pedal apparatus includes a pedal arm provided with an inclined portion, an upper retaining hole, and a lower retaining hole passing therethrough. A connection bracket, having a connecting face, an upper attachment face, a lower attachment face, an upper retaining projection and a lower retaining projection, is coupled with the pedal arm, with the upper retaining projection and the lower retaining projection respectively passing through the upper retaining hole and the lower retaining hole. Each edge of the upper attachment face and the lower attachment face is welded to the inclined portion of the pedal arm.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: November 29, 2016
    Assignees: HONDA MOTOR CO., LTD., HIRUTA-KOGYO CO., LTD.
    Inventors: Motomasa Suzuki, Hiroshi Saito, Junji Ishii, Yoshitaka Noda, Kenji Fujioka, Takurou Matsuda
  • Patent number: 8770605
    Abstract: A chassis frame (1) including connection members (13) each configured by a pipe that is connected to a vehicle body frame. Each connection member (13) is provided with an attachment part (2) at an end of the pipe. The attachment part (2) includes a flat attachment face (21) formed by flatly crashing an end of the pipe to form the overlapped portion where a plate of the pipe is overlapped. The flat attachment face (21) is provided on a center in left and right direction of the overlapped portion. A shape of the end of the pipe is a substantially gate shape in its cross section. The attachment part (2) further includes longitudinal ribs (22) bending from the flat attachment face (21) to both left and right sides of the overlapped portion.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: July 8, 2014
    Assignees: Mitsubishi Jidosha Kogyo Kabushiki Kaisya, Hiruta-Kogyo Co., Ltd.
    Inventors: Manabu Urata, Kenichi Suzuki, Junji Ishii, Yoshitaka Noda, Mitsuyori Gurita
  • Publication number: 20140049032
    Abstract: A chassis frame (1) including connection members (13) each configured by a pipe that is connected to a vehicle body frame. Each connection member (13) is provided with an attachment part (2) at an end of the pipe. The attachment part (2) includes a flat attachment face (21) formed by flatly crashing an end of the pipe to form the overlapped portion where a plate of the pipe is overlapped. The flat attachment face (21) is provided on a center in left and right direction of the overlapped portion. A shape of the end of the pipe is a substantially gate shape in its cross section. The attachment part (2) further includes longitudinal ribs (22) bending from the flat attachment face (21) to both left and right sides of the overlapped portion.
    Type: Application
    Filed: April 27, 2012
    Publication date: February 20, 2014
    Applicants: Hiruta-Kogyo Co., Ltd., Mitsubishi Jidosha Kogyo Kabushiki Kaisya
    Inventors: Manabu Urata, Kenichi Suzuki, Junji Ishii, Yoshitaka Noda, Milsuyori Gurita
  • Publication number: 20100089198
    Abstract: A pedal device for a vehicle in which a support member for rotatably supporting a pedal arm is mounted on a dash panel positioned forward of a deck cross member. The pedal arm is pivotally attached to the support member by a pedal-rotating shaft inserted through a pedal shaft hole formed in the support member, and this support member has a pivotal impact lever which is provided above the pedal arm and forward of the deck cross member and brought down toward the pedal-rotating shaft.
    Type: Application
    Filed: December 26, 2007
    Publication date: April 15, 2010
    Applicant: HIRUTA-KOGYO CO., LTD.
    Inventors: Kenji Fujioka, Junji Ishii, Hideo Tsuboi, Yoshitaka Noda
  • Patent number: 7632363
    Abstract: A method for refurbishing service-degraded gas turbine component can recover the microstructure of the alloy of the gas turbine component, whose material is deteriorated or damaged after its operation, to the extent that is equivalent or more than the characteristic at the time of its manufacture. The method comprises performing a recovery heat treatment, performing a solution heat treatment, and performing an aging heat treatment. The recovery heat treatment heat-treats the component under a predetermined pressure, which is higher than normal pressure, wherein the temperature of the component is increased to a predetermined temperature under the predetermined pressure. The solution heat treatment is processed under reduced pressure or inert gas atmosphere after the recovery heat treatment. The aging heat treatment is processed under reduced pressure or inert gas atmosphere after the recovery heat treatment.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: December 15, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yomei Yoshioka, Daizo Saito, Junji Ishii, Yoshihiro Aburatani
  • Publication number: 20060016527
    Abstract: A method for refurbishing service-degraded gas turbine component can recover the microstructure of the alloy of the gas turbine component, whose material is deteriorated or damaged after its operation, to the extent that is equivalent or more than the characteristic at the time of its manufacture. The method comprises performing a recovery heat treatment, performing a solution heat treatment, and performing an aging heat treatment. The recovery heat treatment heat-treats the component under a predetermined pressure, which is higher than normal pressure, wherein the temperature of the component is increased to a predetermined temperature under the predetermined pressure. The solution heat treatment is processed under reduced pressure or inert gas atmosphere after the recovery heat treatment. The aging heat treatment is processed under reduced pressure or inert gas atmosphere after the recovery heat treatment.
    Type: Application
    Filed: June 10, 2005
    Publication date: January 26, 2006
    Inventors: Yomei Yoshioka, Daizo Saito, Junji Ishii, Yoshihiro Aburatani
  • Patent number: 6938447
    Abstract: An apparatus for correcting deformation of a gas turbine blade includes a stationary die fixed to a backside of a tip shroud of a gas turbine blade to hold a back surface thereof and a pressing die pressing a front surface of the tip shroud so as to press the tip shroud of the blade between the pressing die and the stationary. A hydraulic drive mechanism including pressure generator is arranged for pressing the pressing die against the tip shroud held by the stationary die and a control device is operatively connected to the hydraulic drive mechanism so as to set and indicate a driving condition on a basis of deformation correction data preliminarily stored in the control device.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: September 6, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshiaki Fuse, Daizo Saito, Yomei Yoshioka, Masahiro Hiragishi, Junji Ishii
  • Publication number: 20040035163
    Abstract: An apparatus for correcting deformation of a gas turbine blade includes a stationary die fixed to a backside of a tip shroud of a gas turbine blade to hold a back surface thereof and a pressing die pressing a front surface of the tip shroud so as to press the tip shroud of the blade between the pressing die and the stationary. A hydraulic drive mechanism including pressure generator is arranged for pressing the pressing die against the tip shroud held by the stationary die and a control device is operatively connected to the hydraulic drive mechanism so as to set and indicate a driving condition on a basis of deformation correction data preliminarily stored in the control device.
    Type: Application
    Filed: June 26, 2003
    Publication date: February 26, 2004
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Toshiaki Fuse, Daizo Saito, Yomei Yoshioka, Masahiro Hiragishi, Junji Ishii
  • Patent number: 6176676
    Abstract: Structure with elements includes a main body of the element used in gas stream and a plurality of fluid passage. Each outlet of the fluid passage is opened on surface of the main body. Coolant fluid flows from each outlet through the passage to cover the surface as a film-like fluid. The plurality of fluid passages include first fluid passages and second fluid passages. The coolant fluid flows from the outlet of the first fluid passage along the direction of the gas stream on the surface. On the other hand, the coolant fluid also flows from the outlet of the second fluid passage toward the gas stream neighbored on each outlet of the first fluid passage.
    Type: Grant
    Filed: October 20, 1999
    Date of Patent: January 23, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazutaka Ikeda, Akinori Koga, Junji Ishii
  • Patent number: 6105362
    Abstract: A combined cycle power plant comprises a gas turbine system and a steam cycle system having a steam turbine to be driven by the steam generated by the waste heat of the exhaust gas of the gas turbine system, wherein the steam from the steam cycle system flows through a gas turbine cooling system of the gas turbine to cool the gas turbine blades and other elements of the gas turbine system to be cooled and the waste heat of the gas turbine system is effectively collected. The gas turbine cooling system is supplied selectively with bleed air from the compressor of the gas turbine or the steam provided from another steam cycle system in order to ensure a sufficient coolant supply at the time of starting and stopping the plant and during the operation with a partial load.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: August 22, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Fumio Ohtomo, Yuji Nakata, Yoshitaka Fukuyama, Asako Inomata, Sachio Shibuya, Akinori Koga, Junji Ishii, Shoko Ito, Hironobu Yamamoto
  • Patent number: 6092982
    Abstract: Structure with elements includes a main body of the element used in gas stream and a plurality of fluid passage. Each outlet of the fluid passage is opened on surface of the main body. Coolant fluid flows from each outlet through the passage to cover the surface as a film-like fluid. The plurality of fluid passages include first fluid passages and second fluid passages. The coolant fluid flows from the outlet of the first fluid passage along the direction of the gas stream on the surface. On the other hand, the coolant fluid also flows from the outlet of the second fluid passage toward the gas stream neighbored on each outlet of the first fluid passage.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: July 25, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazutaka Ikeda, Akinori Koga, Junji Ishii
  • Patent number: 6038850
    Abstract: A combined cycle power plant comprises a gas turbine system and a steam cycle system having a steam turbine to be driven by the steam generated by the waste heat of the exhaust gas of the gas turbine system, wherein the steam from the steam cycle system flows through a gas turbine cooling system of the gas turbine to cool the gas turbine blades and other elements of the gas turbine system to be cooled and the waste heat of the gas turbine system is effectively collected. The gas turbine cooling system has two or more than two cooling ducts formed in two or more than two elements of the gas turbine system to be cooled such as the gas turbine blades and the combustor of the gas turbine system so that steam is made to flow through the cooling ducts of these two or more than two elements to be cooled to effectively and maximally exploit the cooling potential and the waste heat collecting potential of the steam and hence improve the overall thermal efficiency of the plant.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: March 21, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Fumio Ohtomo, Yuji Nakata, Yoshitaka Fukuyama, Asako Inomata, Sachio Shibuya, Akinori Koga, Junji Ishii, Shoko Ito, Hironobu Yamamoto