Patents by Inventor Manabu Kumagai

Manabu Kumagai 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).

  • Publication number: 20240248121
    Abstract: A current sensor has a bus bar through which a current under measurement flows, a magnetism sensing portion placed so as to face the bus bar in an X direction, and a chassis that incorporates the magnetism sensing portion and part of the bus bar. In a Y direction orthogonal to the X direction, the bus bar has a first connection end protruding from a Y1 side of the chassis and a second connection end protruding from a Y2 side of the chassis. The first connection end and second connection end are at different positions in the X direction when viewed from a Z direction orthogonal to the X direction and Y direction. An opposing portion, facing the magnetism sensing portion, of the bus bar crosses the Y direction when viewed from the Z direction.
    Type: Application
    Filed: December 11, 2023
    Publication date: July 25, 2024
    Inventors: Yuu KUMAGAI, Manabu TAMURA, Hideaki TAKANO
  • Publication number: 20230386745
    Abstract: A dielectric composition, including: dielectric grains containing a main component represented by a composition formula [(CaxSr(1-x))O]m[(TiyHfzZr(1-y-z))O2] (m is more than 1.020); a grain boundary phase located between the dielectric grains; and segregation grains each containing at least Ca, Si, and O. A first segregation grain is defined as a segregation further containing Mn among the segregation grains each containing at least Ca, Si, and O, and a second segregation grain is defined as a segregation containing substantially no Mn among the segregation grains each containing at least Ca, Si, and O. N1/(N1+N2) is more than 0.23 and 1.00 or less, in which N1 is a number density of first segregation grains in a cross-section of the dielectric composition, and N2 is a number density of second segregation grains in the cross-section of the dielectric composition.
    Type: Application
    Filed: May 11, 2023
    Publication date: November 30, 2023
    Applicant: TDK CORPORATION
    Inventors: Yuichiro SUEDA, Kengo AIZAWA, Shota KUMAGAI, Takeshi SHOUJI, Satoshi SUGAWARA, Masatoshi TARUTANI, Atsushi YAMADA, Manabu KUMAGAI
  • Patent number: 10472585
    Abstract: A water-based lubricant for plastic working of a metallic material is obtained by adding to a water-based medium: (A) a polymer and/or a salt thereof containing a carboxylic acid or a derivative thereof as a constituent monomer; (B) an oxoacid of tungsten, of silicon, or of phosphorus, or a condensate thereof, and/or a salt thereof; (C) a hydroxide of an alkali metal; and (D) a lubricating component (D), and the solid content weight ratio (A)/[(A)+(B)+(C)+(D)] is 0.05 to 0.4.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: November 12, 2019
    Assignee: NIHON PARKERIZING CO., LTD.
    Inventors: Masaru Mochizuki, Manabu Kumagai, Yuta Kobayashi
  • Publication number: 20160160150
    Abstract: A water-based lubricant for plastic working of a metallic material is obtained by adding to a water-based medium: (A) a polymer and/or a salt thereof containing a carboxylic acid or a derivative thereof as a constituent monomer; (B) an oxoacid of tungsten, of silicon, or of phosphorus, or a condensate thereof, and/or a salt thereof; (C) a hydroxide of an alkali metal; and (D) a lubricating component (D), and the solid content weight ratio (A)/[(A)+(B)+(C)+(D)] is 0.05 to 0.4.
    Type: Application
    Filed: June 27, 2014
    Publication date: June 9, 2016
    Applicant: Nihon Parkerizing Co., Ltd.
    Inventors: Masaru Mochizuki, Manabu Kumagai, Yuta Kobayashi
  • Patent number: 8097306
    Abstract: An aqueous treating solution for an Sn-based plated steel sheet, comprising (A) an organic material, (B) a water-soluble chromium compound, (C) a water-dispersible silica, and water, wherein the organic material (A) is at least one member selected from an oxy-acid with the ratio of hydroxyl group/carboxyl group in one molecule being from 3/1 to 10/1, its lactone form and an oxide derivative thereof, the water-soluble chromium compound (B) does not contain hexavalent chromium, and pH is from 0.7 to 6.0.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: January 17, 2012
    Assignee: Nippon Steel Corporation
    Inventors: Shinichi Yamaguchi, Masao Kurosaki, Yasuto Goto, Manabu Kumagai, Kensuke Mizuno, Takumi Kozaki
  • Publication number: 20100239773
    Abstract: An aqueous treating solution for an Sn-based plated steel sheet, comprising (A) an organic material, (B) a water-soluble chromium compound, (C) a water-dispersible silica, and water, wherein the organic material (A) is at least one member selected from an oxy-acid with the ratio of hydroxyl group/carboxyl group in one molecule being from 3/1 to 10/1, its lactone form and an oxide derivative thereof, the water-soluble chromium compound (B) does not contain hexavalent chromium, and pH is from 0.7 to 6.0.
    Type: Application
    Filed: September 6, 2007
    Publication date: September 23, 2010
    Inventors: Shinichi Yamaguchi, Masao Kurosaki, Yasuto Goto, Manabu Kumagai, Kensuke Mizuno, Takumi Kozaki
  • Publication number: 20040173289
    Abstract: A rustproofing agent for a zinc plated steel sheet is provided which contains (A) a chromium aqueous solution containing an organic substance and (B) an acid metal such as a metal salt of nitric acid or phosphoric acid. All of the chromium in the chromium aqueous solution of component. A is trivalent chromium. It is preferable if the organic substance in component A contains at least one type of oxy acid or oxide thereof. The metal in the acid metal salt of component B is an alkaline earth metal, cobalt, nickel, iron, zirconium, titanium, etc. It is also preferable if (C) a water-dispersible silica is contained as an additional component. The present invention also provides a zinc plated steel sheet, in which at least one side of the surface of a zinc plated steel sheet is coated with the zinc plated steel sheet rustproofing agent and the rustproofing agent dried to form a coating with a dry coating weight of 0.01 to 3 g/m2.
    Type: Application
    Filed: March 8, 2004
    Publication date: September 9, 2004
    Inventors: Yasuhiro Kinoshita, Manabu Kumagai, Takumi Kozaki