Patents by Inventor Masahiro Kumagai

Masahiro 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: 20240102957
    Abstract: In an electrochemical gas sensor (10), a first sensing element (21) is stored in a first storage portion (31). A moisture permeable film (24) is disposed in a first introduction inlet (31A) of the first storage portion (31). The moisture permeable film (24) substantially prevents a to-be-detected gas from permeating therethrough. A second sensing element (22) is disposed in a space into which water vapor and the to-be-detected gas contained in a target gas flow. In such a configuration, the electrochemical gas sensor (10) is capable of detecting a to-be-detected gas having a concentration of 0 or more and 1 ppm or less.
    Type: Application
    Filed: March 8, 2022
    Publication date: March 28, 2024
    Inventors: Shinichiro KITO, Masayuki SEGAWA, Takahiro YOKOYAMA, Junya IMAIZUMI, Yuki MIZUTANI, Masahiro TANAKA, Yoshiko KUMAGAI
  • Patent number: 7946013
    Abstract: Provided is a driving jig for a closing cap which makes it possible to drive a closing cap straight into a bolt installation hole (11) formed in a track rail (1) and which allows this driving operation to be quickly repeated on a plurality of bolt installation holes (11). The jig includes a driving piston (73) and a guide holder (72) for maintaining the driving piston (73) in a predetermined attitude with respect to the track rail (1). The driving piston (72) has a pressing portion (75) coming into contact with an upper surface of the closing cap (70), and a hammering portion (74a) to be hammered by a tool. The guide holder has a cylinder (72a) in which the driving piston (73) slides, and has, at an opening at one end of the cylinder, a guide groove (77) into which an upper portion of the track rail is loosely fitted and which is orthogonal to an axial direction of the cylinder.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: May 24, 2011
    Assignees: THK Co., Ltd, THK GmbH
    Inventor: Masahiro Kumagai
  • Patent number: 7883269
    Abstract: A structure for closing a track rail mounting hole is disclosed, which prevents a closing cap from being press-fitted with an inclined state into the rail mounting hole, thereby being capable of positively preventing formation of a gap between the rail mounting hole and the closing cap. The closing cap includes a fitting portion having an outer diameter larger than an inner diameter of the rail mounting hole, to be press-fitted into the rail mounting hole; and a leading end portion to be inserted into the rail mounting hole before press-fitting the fitting portion into the rail mounting hole, for provisionally positioning the closing cap with respect to the rail mounting hole.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: February 8, 2011
    Assignees: THK Co., Ltd., THK GmbH
    Inventors: Katsuya Iida, Yoshiaki Saito, Masahiro Kumagai, Reinhard G. Welle
  • Publication number: 20090307888
    Abstract: Provided is a driving jig for a closing cap which makes it possible to drive a closing cap straight into a bolt installation hole (11) formed in a track rail (1) and which allows this driving operation to be quickly repeated on a plurality of bolt installation holes (11). The jig includes a driving piston (73) and a guide holder (72) for maintaining the driving piston (73) in a predetermined attitude with respect to the track rail (1). The driving piston (72) has a pressing portion (75) coming into contact with an upper surface of the closing cap (70), and a hammering portion (74a) to be hammered by a tool. The guide holder has a cylinder (72a) in which the driving piston (73) slides, and has, at an opening at one end of the cylinder, a guide groove (77) into which an upper portion of the track rail is loosely fitted and which is orthogonal to an axial direction of the cylinder.
    Type: Application
    Filed: November 15, 2006
    Publication date: December 17, 2009
    Applicants: THK CO., LTD., THK GmbH
    Inventor: Masahiro Kumagai
  • Publication number: 20090010577
    Abstract: The present invention provides a structure for closing a track rail mounting hole, which prevents a closing cap from being press-fitted with an inclined state into the rail mounting hole, thereby being capable of positively preventing formation of a gap between the rail mounting hole and the closing cap. The closing cap (70) includes: a fitting portion (71) having an outer diameter larger than an inner diameter of the rail mounting hole (11b), to be press-fitted into the rail mounting hole (11b); and a leading end portion (72) to be inserted into the rail mounting hole (11b) before press-fitting the fitting portion (71) into the rail mounting hole (11b), for provisionally positioning the closing cap (70) with respect to the rail mounting hole (11b).
    Type: Application
    Filed: December 15, 2005
    Publication date: January 8, 2009
    Applicants: THK CO., LTD., THK GMBH
    Inventors: Katsuya Iida, Yoshiaki Saito, Masahiro Kumagai, Reinhard G. Welle
  • Patent number: 7312276
    Abstract: A resin composition for coating a metal sheet comprising a polyester resin (A) having an intrinsic viscosity of 0.5-2.0 dl/g, an elastomer resin (B) and a vinyl polymer (C) containing at least 1 wt % of a unit with a polar group, and having a structure wherein the elastomer resin (B) is finely dispersed in the polyester resin (A) and at least a portion of the elastomer resin (B) is capsulated by the vinyl polymer (C). Also, metal-sheet-coating resin films using the resin composition, resin-coated metal sheets coated with the resin film, and resin-coated metal containers made by molding the resin-coated metal sheets are disclosed.
    Type: Grant
    Filed: April 19, 2004
    Date of Patent: December 25, 2007
    Assignee: Nippon Steel Corporation
    Inventors: Hiroshi Ohishi, Masahiro Kumagai, Nobuo Kadowaki, Keiko Kawakami
  • Publication number: 20040198907
    Abstract: A resin composition for coating a metal sheet comprising a polyester resin (A) having an intrinsic viscosity of 0.5-2.0 dl/g, an elastomer resin (B) and a vinyl polymer (C) containing at least 1 wt % of a unit with a polar group, and having a structure wherein the elastomer resin (B) is finely dispersed in the polyester resin (A) and at least a portion of the elastomer resin (B) is capsulated by the vinyl polymer (C). Also, metal-sheet-coating resin films using the resin composition, resin-coated metal sheets coated with the resin film, and resin-coated metal containers made by molding the resin-coated metal sheets are disclosed.
    Type: Application
    Filed: April 19, 2004
    Publication date: October 7, 2004
    Applicant: Nippon Steel Corporation
    Inventors: Hiroshi Ohishi, Masahiro Kumagai, Nobuo Kadowaki, Keiko Kawakami
  • Patent number: 6783825
    Abstract: A resin composition for coating a metal sheet comprising a polyester resin (A) having an intrinsic viscosity of 0.5-2.0 dl/g, an elastomer resin (B) and a vinyl polymer (C) containing at least 1 wt % of a unit with a polar group, and having a structure wherein the elastomer resin (B) is finely dispersed in the polyester resin (A) and at least a portion of the elastomer resin (B) is capsulated by the vinyl polymer (C). Also, metal-sheet-coating resin films using the resin composition, resin-coated metal sheets coated with the resin film, and resin-coated metal containers made by molding the resin-coated metal sheets are disclosed.
    Type: Grant
    Filed: June 27, 2000
    Date of Patent: August 31, 2004
    Assignee: Nippon Steel Corporation
    Inventors: Hiroshi Ohishi, Masahiro Kumagai, Nobuo Kadowaki, Keiko Kawakami
  • Patent number: 4985288
    Abstract: A resonant frequency characteristic tag has a thin dielectric film made of a polymer such as polyethylene, and a pair of resonant frequency characteristic circuits each formed on each side of the thin dielectric film, made of a metal foil and having a particular resonant frequency, the two resonant frequency characteristic circuits have terminal sections short-circuited to one another. A release paper is applied by a pressure sensitive adhesive to the surface of one of the two resonant frequency characteristic circuits, and a through hole or opening(s) with a diameter in a range between 0.5 and 3 mm is formed at an electrode plate in a capacitor section of the circuit. The distance between the two electrode plates is adjusted to a predetermined dimension by heating and pressing a portion at the periphery of the through hole or opening(s) with a suitable tool.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: January 15, 1991
    Assignee: Tokai Metals Co., Ltd.
    Inventors: Takeshi Matsumoto, Yuji Suzuki, Masahiro Kumagai, Shinya Uchibori