Patents by Inventor Yutaka Niwa

Yutaka Niwa 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: 20240270325
    Abstract: What is provided is an automobile body in which batteries, tires, and liquids containing water and oil are removed from a public road vehicle with superior collision safety, the public road vehicle comprising at least a steel material containing a steel sheet with a tensile strength of 1180 MPa or higher, a non-ferrous metal material, and a resin material, wherein the ratio of a mass mh (kg) of the steel sheet having a tensile strength of 1180 MPa or higher to a mass m (kg) of the automobile body is 9% or higher, and a mass m (kg) of the automobile body and a projected area s (m2) of the automobile body from an upper side satisfy a formula (1) and a formula (2) 6 < s < 11 ( 1 ) m < ( 2 ? 7 ? 2 . 3 ? 7 × s - 8 ? 3 ? 5 ) × 0 ? .98 .
    Type: Application
    Filed: May 25, 2022
    Publication date: August 15, 2024
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Masahiro KUBO, Shunji HIWATASHI, Yutaka MIKAZUKI, Koichi SATO, Takahiro AITOH, Kengo TAKEDA, Katsuya NAKANO, Yuri TODA, Shinichiro TABATA, Kodai MURASAWA, Daisuke MAEDA, Kazuo HIKIDA, Kazuhisa KUSUMI, Shingo FUJINAKA, Jun HAGA, Ryo TABATA, Ryoma KATO, Mitsuharu YAMAGATA, Toshiyuki NIWA, Hiromi ASAMA, Junichiro SUZUKI, Yasunori ITO
  • Patent number: 10780775
    Abstract: A primary metal terminal connects between a fuel pump and a drive circuit through a resin lid. A primary connecting point of the primary metal terminal connected to the drive circuit, is positioned around a drive control IC, and a primary exposed portion of the primary metal terminal, exposed to a receiving space of the resin lid is bent such that the primary exposed portion is resiliently deformable. A secondary metal terminal connects between an external circuit system and the drive circuit through the resin lid. A secondary connecting point of the secondary metal terminal connected to the drive circuit is positioned at a location that is further spaced from the drive control IC in comparison to the primary connecting point, and a secondary exposed portion of the secondary metal terminal exposed to the receiving space has a stiffness higher than a stiffness of the primary exposed portion.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: September 22, 2020
    Assignees: DENSO CORPORATION, DENSO KOREA AUTOMOTIVE CORPORATION
    Inventors: Shingo Fukuoka, Yutaka Niwa, Sanghoon Lee, Hyoyeol Kim
  • Publication number: 20190009671
    Abstract: A primary metal terminal connects between a fuel pump and a drive circuit through a resin lid. A primary connecting point of the primary metal terminal connected to the drive circuit, is positioned around a drive control IC, and a primary exposed portion of the primary metal terminal, exposed to a receiving space of the resin lid is bent such that the primary exposed portion is resiliently deformable. A secondary metal terminal connects between an external circuit system and the drive circuit through the resin lid. A secondary connecting point of the secondary metal terminal connected to the drive circuit is positioned at a location that is further spaced from the drive control IC in comparison to the primary connecting point, and a secondary exposed portion of the secondary metal terminal exposed to the receiving space has a stiffness higher than a stiffness of the primary exposed portion.
    Type: Application
    Filed: November 21, 2016
    Publication date: January 10, 2019
    Inventors: Shingo FUKUOKA, Yutaka NIWA, Sanghoon LEE, Hyoyeol KIM
  • Patent number: 10137772
    Abstract: A total dimension of spacing dimensions of a gap provided by a metal rod on a side opposite to a metal housing in a first assembling structure and a second assembling structure is set to be larger than a difference in a thermal expansion amount between a resin lid main body and the metal housing in a reference radial direction when a temperature exceeds a reference temperature. A total dimension of each of a spacing dimension of a gap provided by the metal rod on a side toward the metal housing and a spacing dimension between a resin protrusion and the metal housing in the first assembling structure and the second assembling structure is set to be larger than a difference in a thermal shrinkage amount between the resin lid main body and the metal housing in the reference radial direction when a temperature falls below the reference temperature.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: November 27, 2018
    Assignees: DENSO CORPORATION, DENSO KOREA AUTOMOTIVE CORPORATION
    Inventors: Yutaka Niwa, Shingo Fukuoka, Sanghoon Lee, Hyoyeol Kim
  • Patent number: 10054088
    Abstract: A fuel supply device includes a fuel pump, a filter case that houses a fuel filter, and a port member joined to the filter case, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the port member integrally includes a plurality of fuel ports that communicate from inside of the filter case to outside of the filter case.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: August 21, 2018
    Assignees: DENSO CORPORATION, KYOSAN DENKI CO., LTD.
    Inventors: Yutaka Niwa, Hideto Takahashi, Tetsuro Okazono, Hironobu Oki, Akihiro Ishitoya, Akinari Sugiyama
  • Patent number: 10024282
    Abstract: A fuel supply device includes a fuel pump and a filter case that houses a fuel filter, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the filter case includes a case body having a closed bottom shape that forms a housing chamber of the fuel filter, a case cap that covers an aperture of the case body by being joined to the case body, and a residual pressure retention valve that, when the fuel pump is stopped, retains a pressure of the fuel supplied from inside the filter case toward the internal combustion engine, the residual pressure retention valve being disposed at a joint boundary of the case body and the case cap.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: July 17, 2018
    Assignees: DENSO CORPORATION, KYOSAN DENKI CO., LTD.
    Inventors: Yutaka Niwa, Hideto Takahashi, Tetsuro Okazono, Hironobu Oki, Akinari Sugiyama, Akihiro Ishitoya
  • Patent number: 9915234
    Abstract: A valve structure includes a retention element, a first valve body, and a second valve body. The retention element is mounted to and is retained in a lower portion of a stored object. The stored object includes a pump device that pumps fuel from the fuel tank into the sub tank through a pumping passage that communicates an inside of the sub tank with an outside of the sub tank. The stored object is inserted from an upper portion of the sub tank and housed inside the sub tank. The first valve body is integrally formed with the retention element and extends from the retention element. The first valve body is located at a natural inlet open on the bottom portion of the sub tank. The second valve body is integrally formed with the retention element and extends from the retention element. The second valve body is located on the pumping passage.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: March 13, 2018
    Assignee: KYOSAN DENKI CO., LTD.
    Inventors: Akihiro Ishitoya, Akinari Sugiyama, Yutaka Niwa
  • Publication number: 20170355261
    Abstract: A total dimension of spacing dimensions of a gap provided by a metal rod on a side opposite to a metal housing in a first assembling structure and a second assembling structure is set to be larger than a difference in a thermal expansion amount between a resin lid main body and the metal housing in a reference radial direction when a temperature exceeds a reference temperature. A total dimension of each of a spacing dimension of a gap provided by the metal rod on a side toward the metal housing and a spacing dimension between a resin protrusion and the metal housing in the first assembling structure and the second assembling structure is set to be larger than a difference in a thermal shrinkage amount between the resin lid main body and the metal housing in the reference radial direction when a temperature falls below the reference temperature.
    Type: Application
    Filed: December 14, 2015
    Publication date: December 14, 2017
    Inventors: Yutaka NIWA, Shingo FUKUOKA, Sanghoon LEE, Hyoyeol KIM
  • Publication number: 20160265494
    Abstract: A fuel supply device includes a fuel pump and a filter case that houses a fuel filter, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the filter case integrally includes, offset to a specific location of a circumferential direction, a fuel passage that allows fuel to flow downstream from the fuel filter, a discharge passage that discharges flowing fuel in the fuel passage toward the internal combustion engine, and a plurality of opening and closing valves that open and close the fuel passage.
    Type: Application
    Filed: November 3, 2014
    Publication date: September 15, 2016
    Applicant: DENSO CORPORATION
    Inventors: Yutaka NIWA, Hideto TAKAHASHI, Tetsuro OKAZONO, Hironobu OKI, Akinari SUGIYAMA, Akihiro ISHITOYA
  • Publication number: 20160252059
    Abstract: A fuel supply device includes a fuel pump and a filter case that houses a fuel filter, fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the filter case includes a fuel passage formed downstream of the fuel filter, the fuel passage being in communication with outside of the filter case, and a partition wall that partitions the fuel passage to give the fuel passage a shape which is turned back in an axial direction of the filter case.
    Type: Application
    Filed: November 3, 2014
    Publication date: September 1, 2016
    Inventors: Yutaka NIWA, Hideto TAKAHASHI, Tetsuro OKAZONO, Hironobu OKI, Akinari SUGIYAMA, Akihiro ISHITOYA
  • Publication number: 20160252060
    Abstract: A fuel supply device includes a fuel pump, a filter case that houses a fuel filter, and a port member joined to the filter case, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the port member integrally includes a plurality of fuel ports that communicate from inside of the filter case to outside of the filter case.
    Type: Application
    Filed: November 3, 2014
    Publication date: September 1, 2016
    Applicants: DENSO CORPORATION, KYOSAN DENKI COL, LTD.
    Inventors: Yutaka NIWA, Hideto TAKAHASHI, Tetsuro OKAZONO, Hironobu OKI, Akihiro ISHITOYA, Akinari SUGIYAMA
  • Publication number: 20160245246
    Abstract: A fuel supply device includes a fuel pump and a filter case that houses a fuel filter, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the filter case includes a case body having a closed bottom shape that forms a housing chamber of the fuel filter, a case cap that covers an aperture of the case body by being joined to the case body, and a residual pressure retention valve that, when the fuel pump is stopped, retains a pressure of the fuel supplied from inside the filter case toward the internal combustion engine, the residual pressure retention valve being disposed at a joint boundary of the case body and the case cap.
    Type: Application
    Filed: November 3, 2014
    Publication date: August 25, 2016
    Inventors: Yutaka NIWA, Hideto TAKAHASHI, Tetsuro OKAZONO, Hironobu OKI, Akinari SUGIYAMA, Akihiro ISHITOYA
  • Publication number: 20150224873
    Abstract: A valve structure includes a retention element, a first valve body, and a second valve body. The retention element is mounted to and is retained in a lower portion of a stored object. The stored object includes a pump device that pumps fuel from the fuel tank into the sub tank through a pumping passage that communicates an inside of the sub tank with an outside of the sub tank. The stored object is inserted from an upper portion of the sub tank and housed inside the sub tank. The first valve body is integrally formed with the retention element and extends from the retention element. The first valve body is located at a natural inlet open on the bottom portion of the sub tank. The second valve body is integrally formed with the retention element and extends from the retention element. The second valve body is located on the pumping passage.
    Type: Application
    Filed: November 3, 2014
    Publication date: August 13, 2015
    Inventors: Akihiro ISHITOYA, Akinari SUGIYAMA, Yutaka NIWA
  • Patent number: 7819637
    Abstract: A flow-metering valve for metering a flow of liquid has a valve member, a stopper and an electromagnetic driving member. The valve member is reciprocally displaceably arranged between a first position and a second position in the liquid chamber. The stopper is arranged at the second position in the liquid chamber. The electromagnetic driving member generates a magnetic attractive force between the valve member and the stopper to hold the valve member at the second position when the electromagnetic driving member is energized.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: October 26, 2010
    Assignee: Denso Corporation
    Inventors: Kaoru Oda, Hiroshi Inoue, Nobuo Ota, Yoshitsugu Inaguma, Yutaka Niwa
  • Publication number: 20060222518
    Abstract: A flow-metering valve for metering a flow of liquid has a valve member, a stopper and an electromagnetic driving member. The valve m ember is reciprocally displaceably arranged between a first position and a second position in the liquid chamber. The stopper is arranged at the second position in the liquid chamber. The electromagnetic driving member generates a magnetic attractive force between the valve member and the stopper to hold the valve member at the second position when the electromagnetic driving member is energized.
    Type: Application
    Filed: December 16, 2005
    Publication date: October 5, 2006
    Applicant: DENSO CORPORATION
    Inventors: Kaoru Oda, Hiroshi Inoue, Nobuo Ota, Yoshitsugu Inaguma, Yutaka Niwa
  • Patent number: 6907857
    Abstract: A fuel supply and injection system includes a fuel tank, a single electric pump unit, a plurality of fuel injection valves and a piping arrangement. The pump unit is provided in the fuel tank and includes an inlet for taking the fuel in the fuel tank and an outlet for discharging the fuel. The injection valves are secured to an engine main body. Each fuel injection valve includes a nozzle, which is disposed in a corresponding one of combustion chambers and injects the fuel supplied from the pump unit directly into the corresponding one of the combustion chambers. The piping arrangement connects between the electric pump unit and each fuel injection valve. The pump unit is the only pump for supplying the fuel to the fuel injection valves.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: June 21, 2005
    Assignee: Denso Corporation
    Inventors: Kimitaka Saito, Yasuhide Tani, Yukio Mori, Shinji Ueda, Yutaka Niwa
  • Patent number: 6857417
    Abstract: A coating layer made of a lipophobic material is provided in a distal end of a nozzle needle of a fuel injection nozzle. The coating layer is formed by soaking the distal end of the nozzle needle in a liquid state lipophobic material.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: February 22, 2005
    Assignee: Denso Corporation
    Inventor: Yutaka Niwa
  • Publication number: 20040000601
    Abstract: A coating layer made of a lipophobic material is provided in a distal end of a nozzle needle of a fuel injection nozzle. The coating layer is formed by soaking the distal end of the nozzle needle in a liquid state lipophobic material.
    Type: Application
    Filed: June 23, 2003
    Publication date: January 1, 2004
    Inventor: Yutaka Niwa
  • Publication number: 20030098009
    Abstract: A fuel supply and injection system includes a fuel tank, a single electric pump unit, a plurality of fuel injection valves and a piping arrangement. The pump unit is provided in the fuel tank and includes an inlet for taking the fuel in the fuel tank and an outlet for discharging the fuel. The injection valves are secured to an engine main body. Each fuel injection valve includes a nozzle, which is disposed in a corresponding one of combustion chambers and injects the fuel supplied from the pump unit directly into the corresponding one of the combustion chambers. The piping arrangement connects between the electric pump unit and each fuel injection valve. The pump unit is the only pump for supplying the fuel to the fuel injection valves.
    Type: Application
    Filed: November 1, 2002
    Publication date: May 29, 2003
    Inventors: Kimitaka Saito, Yasuhide Tani, Yukio Mori, Shinji Ueda, Yutaka Niwa
  • Patent number: 6163011
    Abstract: A first member (11) and a second member (12) of metal materials of different kinds are overlapped one upon the other, and the surface of the first member (11) is irradiated with a laser beam to form a melt-solidified portion (2). The melt-solidified portion (2) has a nearly inverted triangular shape in cross section becoming gradually narrow toward the inside from the front surface side of the first member (11), and has a low-hardness layer (21) on the front surface side and a high-hardness layer (22) on the inside. The high-hardness layer (22) has a welded structure in which first layers (23) and second layers (24) having a hardness smaller than that of said first layers (23) are alternatingly laminated in the direction in which the welding proceeds.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: December 19, 2000
    Assignee: Denso Corporation
    Inventors: Mamoru Urushizaki, Takashi Ogata, Yoshinori Ohmi, Hideaki Shirai, Yutaka Niwa