Patents by Inventor Tatsuya Okumura

Tatsuya Okumura 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: 11467121
    Abstract: Disclosed is a manufacturing method of a gas sensor. The gas sensor has a plate-shaped sensor element with at least one pair of electrode pads, a separator disposed around the sensor element, and at least one pair of opposed metal terminals held in an insertion hole of the separator and electrically connected at contact regions thereof to the respective electrode pads. The manufacturing method includes mounting the metal terminals in the insertion hole of the separator with use of a mounting jig. The mounting jig has a flat portion interposed between the contact regions of the metal terminals during the mounting of the metal terminals in the separator so as to prevent contact and entanglement of the opposed metal terminals.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: October 11, 2022
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Takehiro Oba, Tatsuya Okumura
  • Publication number: 20220255302
    Abstract: Provided is an electrical connection box cover for covering a plurality of insertion ports for fuses of an insertion housing in which a plurality of rows of the insertion ports arranged side by side in one direction are provided in a stepped shape, the electrical connection box cover including a flat opposing wall that opposes the insertion ports when the electrical connection box cover is attached to the electrical connection box.
    Type: Application
    Filed: July 22, 2020
    Publication date: August 11, 2022
    Inventors: Masakazu OKUMURA, Akihiro ODA, Tatsuya DAIDOJI, Noriko OKAMOTO, Ryoma HAMADA
  • Publication number: 20210018462
    Abstract: Disclosed is a manufacturing method of a gas sensor. The gas sensor has a plate-shaped sensor element with at least one pair of electrode pads, a separator disposed around the sensor element, and at least one pair of opposed metal terminals held in an insertion hole of the separator and electrically connected at contact regions thereof to the respective electrode pads. The manufacturing method includes mounting the metal terminals in the insertion hole of the separator with use of a mounting jig. The mounting jig has a flat portion interposed between the contact regions of the metal terminals during the mounting of the metal terminals in the separator so as to prevent contact and entanglement of the opposed metal terminals.
    Type: Application
    Filed: September 30, 2020
    Publication date: January 21, 2021
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Takehiro OBA, Tatsuya Okumura
  • Patent number: 10876995
    Abstract: Disclosed is a manufacturing method of a gas sensor. The gas sensor has a plate-shaped sensor element with at least one pair of electrode pads, a separator disposed around the sensor element, and at least one pair of opposed metal terminals held in an insertion hole of the separator and electrically connected at contact regions thereof to the respective electrode pads. The manufacturing method includes mounting the metal terminals in the insertion hole of the separator with the use of a mounting jig. The mounting jig has a flat portion interposed between the contact regions of the metal terminals during the mounting of the metal terminals in the separator so as to prevent contact and entanglement of the opposed metal terminals.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: December 29, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Takehiro Oba, Tatsuya Okumura
  • Publication number: 20190004007
    Abstract: Disclosed is a manufacturing method of a gas sensor. The gas sensor has a plate-shaped sensor element with at least one pair of electrode pads, a separator disposed around the sensor element, and at least one pair of opposed metal terminals held in an insertion hole of the separator and electrically connected at contact regions thereof to the respective electrode pads. The manufacturing method includes mounting the metal terminals in the insertion hole of the separator with the use of a mounting jig. The mounting jig has a flat portion interposed between the contact regions of the metal terminals during the mounting of the metal terminals in the separator so as to prevent contact and entanglement of the opposed metal terminals.
    Type: Application
    Filed: May 4, 2018
    Publication date: January 3, 2019
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Takehiro OBA, Tatsuya OKUMURA
  • Patent number: 9151728
    Abstract: Provided is a gas sensor in which a connection terminal can be favorably fitted onto a cylindrical sensor element without causing a breakage of the connection terminal. An oxygen sensor (1) includes an outer connection terminal (29) having an outer fitting portion (53), an extension portion (55) extending inwardly from an axially intermediate point of the outer fitting portion (53) and pulling prevention portions (75) and (77) formed on rear end parts of the outer fitting portion (53) at positions adjacent to the extension portion (55). When the extension portion (55) of the outer connection terminal (29) is inserted in and pulled out from a through hole (23) of a separator (27), the extension portion (55) can be prevented from further pulling in the through hole (23) by contact of the pulling prevention portions (75) and (77) with a front end surface of the separator (27).
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: October 6, 2015
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Hidekazu Kato, Tatsuya Okumura, Masahiro Asai, Tomoyuki Miyashita
  • Publication number: 20120304735
    Abstract: Provided is a gas sensor in which a connection terminal can be favorably fitted onto a cylindrical sensor element without causing a breakage of the connection terminal. An oxygen sensor (1) includes an outer connection terminal (29) having an outer fitting portion (53), an extension portion (55) extending inwardly from an axially intermediate point of the outer fitting portion (53) and pulling prevention portions (75) and (77) formed on rear end parts of the outer fitting portion (53) at positions adjacent to the extension portion (55). When the extension portion (55) of the outer connection terminal (29) is inserted in and pulled out from a through hole (23) of a separator (27), the extension portion (55) can be prevented from further pulling in the through hole (23) by contact of the pulling prevention portions (75) and (77) with a front end surface of the separator (27).
    Type: Application
    Filed: December 6, 2011
    Publication date: December 6, 2012
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Hidekazu Kato, Tatsuya Okumura, Masahiro Asai, Tomoyuki Miyashita
  • Patent number: 7758736
    Abstract: A detecting element (10) of a gas sensor (1) is held with a detecting portion (11) projecting from a front-end engaging-portion (56) of a metallic shell (50) and is accommodated for protection in an inner protector (120) in a gas detection chamber (129). Exhaust gas introduced into the gas detection chamber (129) is exhausted through an exhaust hole (160). The exhaust hole is formed by cutting off a portion of a side wall (127) of a recess portion (125), which is formed by pressing inward a portion between two slits formed in a front end wall (124). A bottom wall (126) of the recess portion (125) is located frontward of the detecting element (10) with respect to the direction of an axis O, thereby preventing a water droplet which comes flying from the outside from directly contacting the detecting element (10).
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: July 20, 2010
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Tatsuya Okumura, Satoshi Ishikawa, Takehiro Oba, Tomohiko Funahashi
  • Patent number: 7542847
    Abstract: A map display device having a corridor function includes a control unit and display unit. In the corridor function, the control unit clips a part of map data corresponding to a region, which includes a reference point at a central part of the region, and stores the part of map data in a memory; the display unit displays a map of the region based on the stored part of map data.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: June 2, 2009
    Assignee: Denso Corporation
    Inventor: Tatsuya Okumura
  • Patent number: 7415877
    Abstract: To provide a gas sensor in which connection terminals are stably brought into contact with electrode terminal portions of a sensor element without superfluous load applied on the sensor element. A pair of element guide portions 33 are provided in a sleeve 30 in which a plate-like sensor element 10 is inserted. The pair of element guide portions 33 protrude from an opening end surface on a rear end side of an axial hole 31, store either of widthwise opposite side ends of the sensor element 10 and restrain the sensor element 10 from being inclined. The sensor element 10 is positioned coaxially with the sleeve 30 by the element guide portions 33. Electrode holders 40 in which electrode fitments 60 are held are fitted to the element guide portions 33 so that the electrode fitments 60 are brought into contact with electrode terminal portions 15 and 16 of the sensor element 10.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: August 26, 2008
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Tatsuya Okumura, Tomohiro Nakamura
  • Patent number: 7371092
    Abstract: In a waterproof connector (1), a filter (151), which is impermeable to liquid and permeable to air, is arranged between an outer circumferential surface of an insulating coating layer (13) of a first electric wire (11) and a wall surface of the first hole (33). On the other hand, a seal member (51), which is impermeable to liquid and air, is arranged between an outer circumferential surface of an insulating coating layer (313) of a second electric wire (311) and a wall surface of the second hole (313).
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: May 13, 2008
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Tatsuya Okumura, Tomohiro Nakamura, Tomohiko Funahashi
  • Publication number: 20080067066
    Abstract: A detecting element (10) of a gas sensor (1) is held with a detecting portion (11) projecting from a front-end engaging-portion (56) of a metallic shell (50) and is accommodated for protection in an inner protector (120) in a gas detection chamber (129). Exhaust gas introduced into the gas detection chamber (129) is exhausted through an exhaust hole (160). The exhaust hole is formed by cutting off a portion of a side wall (127) of a recess portion (125), which is formed by pressing inward a portion between two slits formed in a front end wall (124). A bottom wall (126) of the recess portion (125) is located frontward of the detecting element (10) with respect to the direction of an axis O, thereby preventing a water droplet which comes flying from the outside from directly contacting the detecting element (10).
    Type: Application
    Filed: August 27, 2007
    Publication date: March 20, 2008
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Tatsuya Okumura, Satoshi Ishikawa, Takehiro Oba, Tomohiko Funahashi
  • Publication number: 20080014793
    Abstract: In a waterproof connector (1), a filter (151), which is impermeable to liquid and permeable to air, is arranged between an outer circumferential surface of an insulating coating layer (13) of a first electric wire (11) and a wall surface of the first hole (33). On the other hand, a seal member (51), which is impermeable to liquid and air, is arranged between an outer circumferential surface of an insulating coating layer (313) of a second electric wire (311) and a wall surface of the second hole (313).
    Type: Application
    Filed: July 10, 2007
    Publication date: January 17, 2008
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Tatsuya Okumura, Tomohiro Nakamura, Tomohiko Funahashi
  • Publication number: 20060288759
    Abstract: To provide a gas sensor in which connection terminals are stably brought into contact with electrode terminal portions of a sensor element without superfluous load applied on the sensor element. A pair of element guide portions 33 are provided in a sleeve 30 in which a plate-like sensor element 10 is inserted. The pair of element guide portions 33 protrude from an opening end surface on a rear end side of an axial hole 31, store either of widthwise opposite side ends of the sensor element 10 and restrain the sensor element 10 from being inclined. The sensor element 10 is positioned coaxially with the sleeve 30 by the element guide portions 33. Electrode holders 40 in which electrode fitments 60 are held are fitted to the element guide portions 33 so that the electrode fitments 60 are brought into contact with electrode terminal portions 15 and 16 of the sensor element 10.
    Type: Application
    Filed: March 18, 2005
    Publication date: December 28, 2006
    Inventors: Tatsuya Okumura, Tomohiro Nakamura
  • Publication number: 20060224315
    Abstract: A map display device having a corridor function includes a control unit and display unit. In the corridor function, the control unit clips a part of map data corresponding to a region, which includes a reference point at a central part of the region, and stores the part of map data in a memory; the display unit displays a map of the region based on the stored part of map data.
    Type: Application
    Filed: March 28, 2006
    Publication date: October 5, 2006
    Applicant: DENSO CORPORATION
    Inventor: Tatsuya Okumura
  • Patent number: 6034183
    Abstract: A process for preparing polymers having quaternary ammonium groups comprising polymerizing a vinyl monomer component containing a vinyl monomer having a tertiary amino group in the presence of a specific solvent, while quaternizing the tertiary amino group with a quaternizing agent, to produce the vinyl polymers having quaternary ammonium groups in the form of particles dispersed in the solvent, which is possible to easily separate the produced polymers having quaternary ammonium groups from the solvent without requiring a heating step for removing the solvent, and which can produce quaternary ammonium group-containing copolymers having a high content of a hydrophobic vinyl monomer. The quaternary ammonium group-containing copolymers obtained by this process are useful as modifier for plastics, permanent antistatic agent, bactericide or fungicide, chemicals for paper making and water treating agent.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: March 7, 2000
    Assignee: Arakawa Chemical Industries, Ltd.
    Inventors: Tatsuya Okumura, Jiro Mizuya, Junji Shiigi
  • Patent number: 5679226
    Abstract: An oxygen sensor includes a tubular metal shell, a tubular housing having an end attached to the metal shell and another end sealed by a seal member. A solid electrolyte tube is attached to the metal shell and has on inner and outer surfaces thereof electrode layers and lead layers connected to the electrode layers, respectively. A pair of lead wires extend through the seal member between inside and outside of a housing assembly constituted by the metal shell and housing while being sealingly held by the seal member. A pair of metallic leads are disposed inside of the housing assembly for connection between the lead layers and the lead wires, the metallic leads having at one end thereof electrode connecting portions having a spring property, the electrode connecting portions being attached to the inner and outer surfaces of the solid electrolyte tube and held in contact with the lead layers under spring pressure.
    Type: Grant
    Filed: September 14, 1995
    Date of Patent: October 21, 1997
    Assignee: NGK Spark Plug Co, Ltd.
    Inventors: Keizo Furusaki, Tatsuya Okumura, Hideya Tanaka, Yasuhiro Yamada
  • Patent number: 5330582
    Abstract: A cleaning method for removing a rosin-base solder flux, the method including bringing a cleaning agent into contact with the flux on a printed wiring board, the cleaning agent including a mixture of(A) at least one glycol ether compound represented by the formula ##STR1## wherein R.sup.1 is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, R.sup.2 is an alkyl group having 1 to 5 carbon atoms, R.sup.3 is a hydrogen atom or a methyl group and n is an integer of 2 to 4, and(B) at least one nonionic surfactant.
    Type: Grant
    Filed: July 19, 1993
    Date of Patent: July 19, 1994
    Assignee: Arakawa Chemical Industries, Ltd.
    Inventors: Machio Chihara, Jiro Mizuya, Tatsuya Okumura, Takashi Tanaka
  • Patent number: 5256209
    Abstract: The invention provides a cleaning method for removing a rosin-base solder flux, using essentially a mixture of(A) a compound of the formula (1) ##STR1## wherein R.sup.1 is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, R.sup.2 is an alkyl group having 1 to 5 carbon atoms, R.sup.3 is a hydrogen atom or a methyl group and k is an integer of 2 to 4,(B) a compound represented by the formula (2)R.sup.4 --O--(CH.sub.2 CH.sub.2 O).sub.m --H (2)wherein R.sup.4 is a straight- or branched-chain alkyl group having 6 to 20 carbon atoms, phenyl group or a phenyl group substituted with a straight- or branched- chain alkyl group having 7 to 12 carbon atoms and m is an integer 2 to 20,(C) a compound represented by the formula (3) ##STR2## wherein R.sup.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: October 26, 1993
    Assignee: Arakawa Chemical Industries, Ltd.
    Inventors: Machio Chihara, Jiro Mizuya, Tatsuya Okumura, Takashi Tanaka
  • Patent number: 5096504
    Abstract: The invention provides a cleaning agent for removal of a rosin-base flux, the cleaning agent consisting essentially of a surfactant represented by the formulaR--O--(CH.sub.2 CH.sub.2 O).sub.n --H (I)wherein R is a straight or branched chain alkyl or alkenyl group having 5 to 18 carbon atoms and n is an integer of 2 to 12, and a cleaning method for removing a rosin-base flux, the method comprising bringing the cleaning agent into contact with a flux on a printed wiring board.
    Type: Grant
    Filed: June 15, 1990
    Date of Patent: March 17, 1992
    Assignee: Arakawa Chemical Industries, Ltd.
    Inventors: Machio Chihara, Jiro Mizuya, Tatsuya Okumura, Takashi Tanaka