Patents by Inventor Tsuyoshi Sasaki

Tsuyoshi Sasaki 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: 20070068383
    Abstract: In a multiphase hydrogen permeation alloy comprising a phase in charge of hydrogen permeation and a phase in charge of hydrogen embrittlement resistance, a structure in which the phase in charge of hydrogen permeability is continuously interconnected and in which more preferably the growth direction of the aforementioned phase in charge of hydrogen permeation lies aligned in the thickness direction of the permeation membrane. As the hydrogen permeation alloy, an Nb—Ti—Co alloy is exemplified, wherein the phase in charge of hydrogen permeability is made of an (Nb, Ti) phase and the aforementioned phase in charge of hydrogen embrittlement resistance is made of a CoTi phase. By virtue of the fact that the growth direction of the phase in charge of hydrogen permeation lies aligned in the thickness direction of the permeation membrane, the hydrogen permeation pass length becomes short to give further improved hydrogen permeation property.
    Type: Application
    Filed: September 26, 2006
    Publication date: March 29, 2007
    Inventors: Tsuyoshi Sasaki, Toshiki Kabutomori, Kiyoshi Aoki, Kazuhiro Ishikawa
  • Publication number: 20070056660
    Abstract: A (Nb, Ti) phase in an Nb—Ti—Co alloy is composed of a granular structure. The Nb—Ti—Co alloy is preferably subjected to heat treatment at 800° C. or more so that the eutectic structure in the casted state can be changed to a granular structure. The Nb—Ti—Co alloy used there is preferably NbxTi(100-x-y)Coy, (x?70, 20?y?50 (mol %)). By properly predetermining the heating temperature and time, the resulting alloy exhibits improved hydrogen permeability in combination with a good hydrogen embrittlement resistance characteristic in the CoTi phase, making it possible to provide a practical hydrogen permeable membrane having an advantageously high performance.
    Type: Application
    Filed: March 28, 2006
    Publication date: March 15, 2007
    Inventors: Kiyoshi Aoki, Kazuhiro Ishikawa, Tsuyoshi Sasaki, Toshiki Kabutomori
  • Patent number: 7189475
    Abstract: The present invention provides a secondary battery which is less expensive, whose safety is extremely high, which is of large capacity as well as good cyclic characteristic, and which uses an aqueous solution for the electrolytic solution. A lithium secondary battery according to the present invention is constituted by including a positive electrode, formed by binding a positive-electrode raw-material mixture including a positive electrode active material, a negative electrode, formed by binding a negative-electrode raw-material mixture including a negative electrode active material, and an electrolytic solution, comprising an aqueous solution in which a lithium salt is dissolved, said positive electrode active material including at least one of a layered structure lithium-manganese composite oxide whose basic composition is LiMnO2 and an olivine structure lithium-iron composite phosphorus oxide whose basic composition is LiFePO4.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: March 13, 2007
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Tsuyoshi Sasaki, Yoshio Ukyo, Hideyuki Nakano, Masao Kohzaki
  • Publication number: 20070048171
    Abstract: An Nb—Ti—Co alloy having both good hydrogen permeability and good hydrogen embrittlement resistance comprises one of Fe, Cu or Mn as a fourth element, incorporating from 1 to 14 mol %. The content of Mn, if any, is preferably from 1 to 9 mol %. The desired hydrogen permeability can be attained by the (Nb, Ti) phase and the desired hydrogen embrittlement resistance can be attained by the CoTi phase, making is possible to obtain excellent hydrogen permeability and excellent hydrogen embrittlement resistance. None of Fe, Cu or Mn can impair these properties. Fe, Cu or Mn can replace some of the Co elements. Fe, Cu or Mn enhances the workability of the alloy.
    Type: Application
    Filed: March 28, 2006
    Publication date: March 1, 2007
    Inventors: Kiyoshi Aoki, Kazuhiro Ishikawa, Tsuyoshi Sasaki, Toshiki Kabutomori
  • Patent number: 7038748
    Abstract: A reflective liquid crystal display has a transparent electrode, a reflective pixel electrode provided as facing the transparent electrode with a gap, and a liquid crystal layer provided in the gap between the transparent electrode and the reflective pixel electrode. A work-function adjusting layer is provided in the gap and on the reflective pixel electrode. The entire work function of the work-function adjusting layer and the reflective pixel electrode is adjusted within ±2% of a work function of the transparent electrode. Instead of the work-function adjusting layer, the transparent electrode may be made of a material containing a specific metal so that the transparent electrode exhibits a work function within ±2% of a work function of the reflective pixel electrode.
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: May 2, 2006
    Assignee: Victor Company of Japan, LTD
    Inventor: Tsuyoshi Sasaki
  • Publication number: 20050012877
    Abstract: A reflective liquid crystal display has a transparent electrode, a reflective pixel electrode provided as facing the transparent electrode with a gap, and a liquid crystal layer provided in the gap between the transparent electrode and the reflective pixel electrode. A work-function adjusting layer is provided in the gap and on the reflective pixel electrode. The entire work function of the work-function adjusting layer and the reflective pixel electrode is adjusted within ±2% of a work function of the transparent electrode. Instead of the work-function adjusting layer, the transparent electrode may be made of a material containing a specific metal so that the transparent electrode exhibits a work function within ±2% of a work function of the reflective pixel electrode.
    Type: Application
    Filed: May 17, 2004
    Publication date: January 20, 2005
    Inventor: Tsuyoshi Sasaki
  • Publication number: 20040157123
    Abstract: There is provided a secondary cell having a positive electrode and a negative electrode which is made of solid active materials and an electrolyte layer which has been intervened between the positive electrode and the negative electrode. At least one of solid active materials for constituting the positive electrode and the negative electrode is composed of a mixed oxygen ion and electron conductor capable of inserting and eliminating oxygen ion or absorbing and releasing oxygen.
    Type: Application
    Filed: September 26, 2003
    Publication date: August 12, 2004
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Tsuyoshi Sasaki, Yoji Takeuchi, Hideyuki Nakano, Tetsuro Kobayashi, Yoshio Ukyo
  • Publication number: 20030124423
    Abstract: The present invention provides a secondary battery which is less expensive, whose safety is extremely high, which is of large capacity as well as good cyclic characteristic, and which uses an aqueous solution for the electrolytic solution. A lithium secondary battery according to the present invention is constituted by including a positive electrode, formed by binding a positive-electrode raw-material mixture including a positive electrode active material, a negative electrode, formed by binding a negative-electrode raw-material mixture including a negative electrode active material, and an electrolytic solution, comprising an aqueous solution in which a lithium salt is dissolved, said positive electrode active material including at least one of a layered structure lithium-manganese composite oxide whose basic composition is LiMnO2 and an olivine structure lithium-iron composite phosphorus oxide whose basic composition is LiFePO4.
    Type: Application
    Filed: January 24, 2003
    Publication date: July 3, 2003
    Inventors: Tsuyoshi Sasaki, Yoshio Ukyo, Hideyuki Nakano, Masao Kohzaki
  • Publication number: 20030099794
    Abstract: A molding method of making a resin molded article by using a mold apparatus includes the steps of: a) starting filling resin into a cavity forming part of the mold apparatus before a mold closing process is finished; b) finishing the mold closing process after filling the resin into the cavity forming part of the mold apparatus is finished; and c) implementing a mold clamping process after the mold closing process is finished.
    Type: Application
    Filed: November 25, 2002
    Publication date: May 29, 2003
    Inventors: Tsuyoshi Sasaki, Osamu Watanabe, Naoki Takigawa
  • Patent number: 6515268
    Abstract: A photoelectric converter with improved charge transfer efficiency from a light receiving portion. The photoelectric converter includes a light receiving portion having an output end and a gate portion having a first side and a second side that both define a readout gate width for the light receiving portion, where the first side of the gate portion confronts the output end of the light receiving portion. The photoelectric converter also includes a charge transfer portion formed to confront the second side of the gate portion, where the readout gate width of said gate portion is wider at the first side confronting said light receiving portion than at the second side confronting said charge transfer portion.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: February 4, 2003
    Assignee: Sony Corporation
    Inventors: Satoshi Kitayama, Kazushige Nigawara, Tsuyoshi Sasaki
  • Patent number: 6087042
    Abstract: Disclosed is a positive electrode material for a secondary lithium battery excellent in high temperature cycle characteristics which is a lithium manganese oxyfluoride having a spinel structure, wherein the oxyfluoride has a composition represented by the composition formula:Li.sub.1+x Mn.sub.2-x O.sub.4-y F.sub.zwherein x represents a number of from 0.0133 to 0.3333; y represents a number of from 0 to 0.2 (exclusive of 0); and z represents a number of from 0.01 to 0.2 (exclusive of 0.01), with the proviso that (y-z) is more than 0 but not more than 0.07. The positive electrode material for a secondary lithium battery of the present invention exhibits not only a high cycle durability of charge/discharge but also a minimum drop of a charge/discharge initial capacity to provide a high energy density.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: July 11, 2000
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Jun Sugiyama, Tsuyoshi Sasaki, Tatsuya Hatanaka, Tatsuo Noritake, Tatsumi Hioki
  • Patent number: 5958362
    Abstract: The present method is to produce an active material powder formed of a spinel oxide containing lithium or a layer-structured oxide containing lithium for a lithium secondary battery which is uniform in composition, fine in particle size and free of oxygen defects, and which is unlikely to cause capacity deterioration resulted from repetitive charge/discharge cycles at a high current density.A suspension 1 prepared by suspending an ingredient of the active material powder in a combustible liquid or an emulsion prepared by emulsifying a solution of the ingredient in the combustible liquid is sprayed in a droplet state 15 together with an oxygenic gas 2. The combustible liquid contained in the droplet 15 is burned to have the ingredient therein reacted and to evaporate the solvent. As a result, active material powder 4 formed of the spinel oxide containing lithium is obtained.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: September 28, 1999
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Kazumasa Takatori, Naoyoshi Watanabe, Toshihiko Tani, Tsuyoshi Sasaki, Akio Takahashi, Masahiko Kato, Akihiko Murakami
  • Patent number: 5604187
    Abstract: A grease composition for constant velocity joints which consists essentially of: (a) a base oil; (b) a diurea compound represented by the following general formula:R.sup.1 NH--CO--NH--p--C.sub.6 H.sub.4 --CH.sub.2 --p--C.sub.6 H.sub.4 --NH--CO--NHR.sup.2(wherein R.sup.1 and R.sup.3 may be the same or different and each represents an aryl group or a cyclohexyl group); (c) melamine cyanurate; (d) molybdenum disulfide; and (e) a phosphorus-free sulfur extreme pressure agent, and optionally (f) molybdenum dithiocarbamate.The grease composition exhibits excellent pitting-inhibitory effect and heat resistance.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: February 18, 1997
    Assignees: Kyodo Yushi Co., Ltd., Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Kiyoshi Takeuchi, Tsuyoshi Sasaki, Tomio Hanawa, Yoshimi Usui, Takahiro Ogura
  • Patent number: 5574352
    Abstract: A trip-resistant frequency control inverter which prevents an overcurrent and overvoltage by frequency control of a motor. Such arrangement provides for generating an accelerating or decelerating rate from the output from a fuzzy controller, which inputs the difference between limiting values and detected values and their changes. The arrangement also provides at the time of acceleration a control which automatically generates an accelerating rate which maintains the current in the vicinity of the limiting value, and a normal acceleration part which adjusts the set accelerating rate. The arrangement further provides at the time of deceleration a control which automatically generates a decelerating rate which maintains the current and voltage in the vicinity of their limiting values, and a normal deceleration part which adjusts the set decelerating rate.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: November 12, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Tsunehiro Endo, Tsuyoshi Sasaki, Hiroshi Fujii, Seiji Ishida
  • Patent number: 5537668
    Abstract: In a reproducing device, e.g., in the portable tape player, the sound leakage from earphones is effectively avoided by directly detecting the signal level of medium to high frequency sounds at the earphone, and suppressing the signal level depending on the detected result thereof, so that the deterioration in sound quality is prevented and the sound leakage is effectively reduced.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: July 16, 1996
    Assignee: Sony Corporation
    Inventors: Takafumi Nambu, Tsuyoshi Sasaki, Akira Ogihara
  • Patent number: 5329766
    Abstract: A hydrostatic power steering system is provided of the type including a steering control unit (3) operated by an input such as a steering wheel (1) to control flow from a source (8) to a steering cylinder (7). The source is operated in response to an electrical signal from a controller (82), controlled by a sensed pressure at a pressure detection port (64). The pressure at the port (64) is communicated from the main fluid path of the steering control unit (3), downstream of the fluid meter (18) when the spool (21) and sleeve (22) are relatively displaced. In systems in which the system reservoir (R) is at an elevated ("regulated tank") pressure, the pressure detection circuit is drained through a variable orifice (70) to a drain port (66), which is in communication with a sump (S) maintained at substantially atmospheric pressure. As a result, the steering system responds at a lower steering pressure, and the initial steering is smoother.
    Type: Grant
    Filed: March 10, 1993
    Date of Patent: July 19, 1994
    Assignee: Eaton Corporation
    Inventors: Masayoshi Yamaguchi, Tsuyoshi Sasaki, Hisao Nagata, Ichiro Nagasaka