Patents by Inventor Hitoshi Uda

Hitoshi Uda 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: 8875503
    Abstract: In an exhaust gas-cooling pipe element provided between an exhaust port of an internal combustion engine and an exhaust branch pipe, a center axis of an exhaust introduction opening that is connected to the exhaust port and a center axis of an exhaust discharge opening that is connected to the exhaust branch pipe are placed out of alignment with each other.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: November 4, 2014
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Takaoka Co., Ltd.
    Inventors: Tsukasa Nagayama, Hitoshi Uda, Junji Watanabe, Akihiro Hosono
  • Patent number: 8139224
    Abstract: A particulate concentration detector including a detection mechanism having a light emission unit and light reception unit. The particulate concentration detector detects the concentration of particulates suspended in a liquid from the light amount detected by the detection mechanism. The detection mechanism includes a first light guide, a second light guide, a liquid chamber, and a third light guide. The first light guide is arranged at a location facing toward a light emission surface of the light emission unit. The second light guide is arranged at a location facing toward a light reception surface of the light reception unit. The liquid chamber is formed between the first light guide and second light guide and allows the liquid to flow therein. The third light guide is arranged in an oscillatable manner in the liquid chamber so as to face toward the first light guide and the second light guide.
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: March 20, 2012
    Assignees: Toyota Jidosha Kabushiki Kaisha, Nippon Soken, Inc.
    Inventors: Noriyasu Amano, Rie Osaki, Kazuki Matsuo, Naoya Kato, Hitoshi Uda
  • Publication number: 20110232274
    Abstract: In an exhaust gas-cooling pipe element provided between an exhaust port of an internal combustion engine and an exhaust branch pipe, a center axis of an exhaust introduction opening that is connected to the exhaust port and a center axis of an exhaust discharge opening that is connected to the exhaust branch pipe are placed out of alignment with each other.
    Type: Application
    Filed: March 22, 2011
    Publication date: September 29, 2011
    Applicants: Toyota Jidosha Kabushiki Kaisha, Aisin Takaoka Co., Ltd.
    Inventors: Tsukasa Nagayama, Hitoshi Uda, Junji Watanabe, Akihiro Hosono
  • Publication number: 20100208269
    Abstract: A particulate concentration detector including a detection mechanism having a light emission unit and light reception unit. The particulate concentration detector detects the concentration of particulates suspended in a liquid from the light amount detected by the detection mechanism. The detection mechanism includes a first light guide, a second light guide, a liquid chamber, and a third light guide. The first light guide is arranged at a location facing toward a light emission surface of the light emission unit. The second light guide is arranged at a location facing toward a light reception surface of the light reception unit. The liquid chamber is formed between the first light guide and second light guide and allows the liquid to flow therein. The third light guide is arranged in an oscillatable manner in the liquid chamber so as to face toward the first light guide and the second light guide.
    Type: Application
    Filed: July 15, 2008
    Publication date: August 19, 2010
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NIPPON SOKEN, INC
    Inventors: Noriyasu Amano, Rie Osaki, Kazuki Matsuo, Naoya Kato, Hitoshi Uda
  • Patent number: 7764360
    Abstract: A fuel property sensor is provided with three bypass passages and a measure passage. The measure passage is located inside of a closed loop which is comprised of common tangential lines of adjacent bypass passages and a part of profile line of each bypass passage in a cross section perpendicular to the measure passage. Even if the fuel property sensor is rotated around the axis of a fuel pipe in assembling the fuel property sensor to the fuel pipe, at least one of two bypass passages is always located above the measure passage in a vertical direction. Hence, bubbles included in the fuel are restricted from flowing into the measure passage. The fuel property sensor can detect the concentration of ethanol contained in the fuel with high accuracy.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: July 27, 2010
    Assignees: Denso Corporation, Nippon Soken, Inc., Toyota Jidosha Kabushiki Kaisha
    Inventors: Hitoshi Noguchi, Rie Osaki, Hiroshi Nakamura, Hitoshi Uda, Yukihiro Tsukasaki, Hiroki Ichinose
  • Publication number: 20080282779
    Abstract: A fuel property sensor is provided with three bypass passages and a measure passage. The measure passage is located inside of a closed loop which is comprised of common tangential lines of adjacent bypass passages and a part of profile line of each bypass passage in a cross section perpendicular to the measure passage. Even if the fuel property sensor is rotated around the axis of a fuel pipe in assembling the fuel property sensor to the fuel pipe, at least one of two bypass passages is always located above the measure passage in a vertical direction. Hence, bubbles included in the fuel are restricted from flowing into the measure passage. The fuel property sensor can detect the concentration of ethanol contained in the fuel with high accuracy.
    Type: Application
    Filed: May 16, 2008
    Publication date: November 20, 2008
    Applicants: DENSO CORPORATION, NIPPON SOKEN, INC., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hitoshi Noguchi, Rie Osaki, Hiroshi Nakamura, Hitoshi Uda, Yukihiro Tsukasaki, Hiroki Ichinose
  • Patent number: 5628286
    Abstract: An improvement of a valve timing control apparatus for an engine is disclosed. The apparatus has an intake valve and an exhaust valve which are alternately opened and closed in a valve timing sequence according to a rotation of a cam shaft. A timing pulley mounted on the cam shaft has a housing accommodating a plunger movable therein and a sleeve secured to the cam shaft. The housing has a first and second pressure chambers defined by the plunger and sealed with respect to each other. The plunger is arranged to move in an axial direction to selectively advance and retard the cam shaft based on differential pressure between the first pressure chamber and the second pressure chamber. A controller controls an electromagnetic valve with a specific control value to adjust the fluid pressure to be supplied to the first and second pressure chambers to maintain the valve timing sequence converged to a target valve timing.
    Type: Grant
    Filed: March 26, 1996
    Date of Patent: May 13, 1997
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Senji Kato, Nobuhisa Ohkawa, Shigeru Sone, Tadahisa Naganawa, Yoshihito Moriya, Yoshiya Yamashita, Hitoshi Uda, Yuji Yoshihara
  • Patent number: 5609888
    Abstract: An apparatus for producing multifilaments having high fiber strength is disclosed. A spinneret melt spins a polyolefin at a first temperature into filaments. A cooling duct cools the filaments via convection at a second temperature. A chill roll, disposed downstream from the cooling duct, has a third temperature, and forcibly conductively cools the filaments. Finally, heated drawing rolls, disposed downstream from said chill roll, continuously draw the filaments at a high draw ratio.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: March 11, 1997
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Hitoshi Uda, Tetsuya Takahashi, Ryosuke Kamei, Takeshi Sano
  • Patent number: 5349028
    Abstract: Polyester fiber consisting of an aliphatic polyester having a melt viscosity of 1.0.times.10.sup.2 -1.0.times.10.sup.4 poises at a temperature of 190.degree. C. at a shear rate of 1000 sec.sup.-1 and a melting point of 70-190.degree. C. The polyester fiber of the present invention exhibits biodegradability when buried in the ground. The amount of combustion heat generated on incineration is smaller than that of polyethylene and polypropylene. The polyester fiber of the present invention has excellent physical properties.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: September 20, 1994
    Assignee: Showa Highpolymer Co., Ltd.
    Inventors: Tetuya Takahashi, Hitoshi Uda, Akira Nakamura, Ryosuke Kamei, Eiichiro Takiyama
  • Patent number: 5283025
    Abstract: A process for producing multifilaments which has the steps of: melt spinning a polyolefin at a first temperature; cooling the spun filaments with a first chill means which is of a non-contact type and is held at a second temperature; cooling the filaments at a third temperature with a second chill means which is of a contact type for forcibly cooling the filaments; and drawing continuously the filaments at high draw ratio in-line with heating rolls having a predetermined surface temperature so that the filaments cooled at the third temperature are directly and continuously treated by the heating rolls.
    Type: Grant
    Filed: January 4, 1993
    Date of Patent: February 1, 1994
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Hitoshi Uda, Tetsuya Takahashi, Ryosuke Kamei, Takeshi Sano