Patents by Inventor Yasuhiro Sakai

Yasuhiro Sakai 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: 7078850
    Abstract: In a piezoelectric power generation device and a piezoelectric ceramics member used in the device excellent in its power generation efficiency in which the polarization of piezoelectric ceramics elements is set to the same direction and an extremely thin metallic electrode is sandwiched in between the piezoelectric ceramics elements so that a current output obtained in the piezoelectric power generation device can be improved substantially to about two times as high as a current output obtained by a usual piezoelectric power generation device and the parasitic resonance of the electrode can be prevented, the piezoelectric power generation device generates power by applying a distortion deformation to piezoelectric ceramics members formed in plate shapes.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: July 18, 2006
    Assignee: USC Corporation
    Inventor: Yasuhiro Sakai
  • Publication number: 20060154044
    Abstract: An anti-reflection coating having a luminous reflectance of 2% or less to light at an incident angle of 0-60° and excellent scratch resistance, which comprises a dense layer and a porous silica aerogel layer formed in this order on a substrate such that a refractive index successively decreases from said substrate to said porous layer.
    Type: Application
    Filed: January 4, 2006
    Publication date: July 13, 2006
    Applicant: PENTAX Corporation
    Inventors: Kazuhiro Yamada, Yasuhiro Sakai, Hiroyuki Nakayama, Maki Yamada
  • Patent number: 7049959
    Abstract: The present invention provides a non-power source type monitor device installed in a place where a non-power source system needs to be used or a place preferably suitable for the non-power source system, in which a quantity generated energy not lower than several ten times as much as an output of electric current obtained by usual piezoelectric power generating device using steel balls can be assuredly obtained by striking a piezoelectric ceramics element once. A piezoelectric power generating device is formed commonly with capable of automatically repeatedly striking the piezoelectric ceramics element so that a quantity of generated energy of a practical level can be assuredly ensured as a power source of such type monitor device.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: May 23, 2006
    Assignee: USC Corporation
    Inventor: Yasuhiro Sakai
  • Publication number: 20060087200
    Abstract: An oscillating-type generator is provided in which an impact member impacts piezoelectric elements to generate electricity and which can efficiently increase the number of impacts and generate a large amount of electricity. This oscillating-type generator includes: a generator member 2 having an impact member 22 impacting piezoelectric elements 21 to generate electricity; and an elastic member 4 having elasticity, attached to the generator member 2 and, when applied an external force, adapted to oscillate the generator member 2 to cause the impact member 22 to repeat impacting the piezoelectric elements 21.
    Type: Application
    Filed: November 8, 2002
    Publication date: April 27, 2006
    Inventor: Yasuhiro Sakai
  • Publication number: 20060073601
    Abstract: A method for distinguishing erythrocytes in a biological specimen, comprising the steps of preparing a sample liquid by performing to give a damage to a cell membrane of yeast-like fungi without hemolyzing erythrocytes in a biological specimen and to stain the yeast-like fungi with a fluorescent dye; detecting a first information and a second information from a particle in the sample liquid, wherein the first information reflects a size of the particle and the second information reflects a degree of fluorescent staining of the particle; and distinguishing the erythrocytes from the yeast-like fungi based on the first information and second information detected, is disclosed. An apparatus, a reagent kit and a reagent for carrying out the method are also disclosed.
    Type: Application
    Filed: September 30, 2005
    Publication date: April 6, 2006
    Inventors: Yasuyuki Kawashima, Yasuhiro Sakai
  • Patent number: 7005780
    Abstract: This invention relates to a power source apparatus using piezoelectric elements. A conventional power source apparatus using the piezoelectric element has an ability of generating less electricity, and therefore, has been applicable only to equipment which operates with low power consumption. To solve the problems of the conventional power source apparatus, the inventor has devised a “power source apparatus” and disclosed in Japanese Utility Model Registration No. 3074105. However, the devised power generating device has the Zener diode used as the trigger circuit determining the quantity of the charged electricity. Therefore, it is necessary to operate the trigger circuit all the time, consequently to use too much electricity to operate. The electrical power consumption therefor is unignorable compared with the electric energy generated by the piezoelectric element.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: February 28, 2006
    Assignee: U.S.C. Corporation
    Inventor: Yasuhiro Sakai
  • Publication number: 20060017353
    Abstract: In a piezoelectric power generation device and a piezoelectric ceramics member used in the device excellent in its power generation efficiency in which the polarization of piezoelectric ceramics elements is set to the same direction and an extremely thin metallic electrode is sandwiched in between the piezoelectric ceramics elements so that a current output obtained in the piezoelectric power generation device can be improved substantially to about two times as high as a current output obtained by a usual piezoelectric power generation device and the parasitic resonance of the electrode can be prevented, the piezoelectric power generation device generates power by applying a distortion deformation to piezoelectric ceramics members formed in plate shapes.
    Type: Application
    Filed: July 20, 2004
    Publication date: January 26, 2006
    Inventor: Yasuhiro Sakai
  • Patent number: 6972903
    Abstract: A vision assisting apparatus includes a casing for forming an inversely U-shaped optical path, a light entry, provided at one end of the optical path, through which light enters, a light exit, provided at another end of the optical path, through which light exits in an opposite direction to the light entry, an optical system for processing an image entered via the light entry by using the optical pass and outputting a processed image via the light exit, and attaching structure for attaching the casing to a wearer so that the light exit is positioned close to an eye of the wearer. By forming the inversely U-shaped optical path with the casing, it is possible to provide a sufficiently long optical path in a compact form.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: December 6, 2005
    Assignees: Nittoh Kogaku K.K.
    Inventors: Hideo Hara, Kazunaga Shimizu, Fumiaki Koizumi, Yasuhiro Sakai
  • Publication number: 20050256087
    Abstract: The present invention provides a phosphonic acid diester compound represented by General Formula wherein R1, R2, R3 and R4 are the same or different, and represent hydrogen, halogen, lower alkyl or lower alkoxy; R5 is phenyl having on the phenyl ring 1-3 substituents selected from the group consisting of lower alkyl, halogen-substituted lower alkyl, lower alkoxy, halogen-substituted lower alkoxy, phenoxy, benzyloxy, hydroxyl, halogen, nitro, lower alkylthio, di(lower alkyl)amino, lower alkanolyamino, pyrrolidinyl and phenyl, or the like, provided that R5 is not mono(lower alkoxy)pheny; and R6 is lower alkyl; and an ACAT-1 inhibitor containing the compound as an active ingredient.
    Type: Application
    Filed: May 5, 2004
    Publication date: November 17, 2005
    Inventors: Yasuhiro Sakai, Kazuyoshi Miyata, Takahiro Tomoyasu, Akiyoshi Kuroda, Yasuhide Inoue, Akifumi Hagi, Shinya Miki, Norihiro Yoshinaga, Masako Doi, Yoshihiko Tsuda, Seiichirou Kanou
  • Publication number: 20050214884
    Abstract: The present invention is to provide a novel method for stabilizing cholesterol dehydrogenase. Also, the present invention is to provide a novel cholesterol-containing composition and a cholesterol measuring reagent.
    Type: Application
    Filed: November 24, 2004
    Publication date: September 29, 2005
    Inventors: Yasuhiro Sakai, Kenji Isshiki, Kouji Kishi
  • Publication number: 20050088310
    Abstract: The present invention provides a non-power source type monitor device installed in a place where a non-power source system needs to be used or a place preferably suitable for the non-power source system, in which a quantity of generated energy not lower than several ten times as much as an output of electric current obtained by a usual piezoelectric power generating device using steel balls can be assuredly obtained by striking a piezoelectric ceramics element once and a piezoelectric power generating device is formed commonly with means capable of automatically repeatedly striking the piezoelectric ceramics element so that a quantity of generated energy of a practical level can be assuredly ensured as a power source of such type of monitor device.
    Type: Application
    Filed: February 24, 2004
    Publication date: April 28, 2005
    Inventor: Yasuhiro Sakai
  • Publication number: 20040251789
    Abstract: This invention relates to a power source apparatus using piezoelectric elements.
    Type: Application
    Filed: March 10, 2004
    Publication date: December 16, 2004
    Inventor: Yasuhiro Sakai
  • Publication number: 20040179261
    Abstract: The vision assisting apparatus of the present invention includes a casing for forming an inversely U-shaped optical path, a light entry, provided at one end of the optical path, through which light enters, a light exit, provided at another end of the optical path, through which light exits in an opposite direction to the light entry, an optical system for processing an image entered via the light entry by using the optical pass and outputting a processed image via the light exit, and means for attaching the casing to a wearer so that the light exit is positioned close to an eye of the wearer. By forming the inversely U-shaped optical path with the casing, it is possible to provide a sufficiently long optical path in a compact form.
    Type: Application
    Filed: April 26, 2004
    Publication date: September 16, 2004
    Inventors: Hideo Hara, Kazunaga Shimizu, Fumiaki Koizumi, Yasuhiro Sakai
  • Publication number: 20040175781
    Abstract: A method of staining bacteria comprises: working a polymethine dye on a sample in the presence of a substance capable of reducing nitrite ions to stain bacteria in the sample. A method of detecting bacteria comprises the following steps of: (1) working a polymethine dye on a sample by a method as described above to stain bacteria in the sample, (2) introducing the thus treated sample into a detecting part of a flow cytometer and irradiating cells of the stained bacteria one by one with light to measure scattered light and fluorescent light emitted from each of the cells; and (3) discriminating the bacteria from other components in accordance with an intensity of a scattered light signal and an intensity of a fluorescent light signal or a pulse width reflecting the length of particles to count the bacteria.
    Type: Application
    Filed: March 18, 2004
    Publication date: September 9, 2004
    Applicant: Sysmex Corporation
    Inventors: Yasuhiro Sakai, Yasuyuki Kawashima, Junya Inoue, Yoshiro Ikeuchi
  • Patent number: 6763869
    Abstract: In a pultrusion device for producing continuous length sections prepared from thermoplastic resins reinforced with long fibers, the vertical angle (&agr;) of an upstream conical surface of a conical portion, which constitutes a shaping nozzle perforated through the downstream end wall of the device ranges from 15 to 35 degrees and the shaping nozzle has a land portion having a length of 1 to 5 mm in the downstream area subsequent to the upstream conical surface. According to this pultrusion device for producing continuous length sections prepared from thermoplastic resins reinforced with long fibers, the long fibers never undergo any breakage nor fluffing during the opening treatment and this accordingly leads to the substantial reduction of pill-formation.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: July 20, 2004
    Assignee: Chisso Corporation
    Inventors: Yasuhiro Sakai, Rikio Yonaiyama
  • Publication number: 20040067548
    Abstract: Methods for counting bacteria are described that include: (a) preparing an assay sample by staining a specimen using a fluorescent dye, thereby producing a difference in fluorescent intensity between live bacteria and dead bacteria; (b) detecting optical information from the assay sample; and (c) classifying and counting the live bacteria and the dead bacteria based on the detected optical information. Bacteria counting apparatuses and reagent kits for counting bacteria are also described.
    Type: Application
    Filed: October 3, 2003
    Publication date: April 8, 2004
    Applicant: Sysmex Corporation
    Inventors: Yasuyuki Kawashima, Yoshiro Ikeuchi, Yasuhiro Sakai
  • Publication number: 20040041498
    Abstract: A piezoelectric generator is provided which can improve an output current by almost two times by having an ultrathin metal electrode bonded between piezoceramic elements, with polarizations of the piezoceramic elements oriented in the same direction. In the piezoelectric generator for generating electricity by causing deformations to a platelike piezoceramic member, the piezoceramic member comprises two platelike piezoceramic elements and an ultrathin metal electrode disposed therebetween, the piezoceramic elements and the metal electrode being bonded together in layers, the piezoceramic elements having their polarizations oriented in the same direction. A central portion or end portions of one surface of the piezoceramic member is supported by a cushion member to form a flexible support structure that makes it difficult for a natural vibration of the piezoceramic member to be transmitted to other structures.
    Type: Application
    Filed: November 8, 2002
    Publication date: March 4, 2004
    Inventor: Yasuhiro Sakai
  • Publication number: 20030218541
    Abstract: A security device and a security system are provided which require no power supply wires and thus can be installed at any location where a burglary prevention measure is necessary. The security device comprises: a generator member having a piezoelectric element and an impact member, the impact member striking against the piezoelectric element to generate electricity; an alarm unit to issue an alarm by using the generated power; and a control member to control an operation of the alarm unit; wherein one of the generator member and the control member is mounted on a door or window and the other is mounted on a nearby portion that parts from the door or window as the door is opened; wherein when the door or window is opened, the control member causes the alarm unit to operate.
    Type: Application
    Filed: March 6, 2003
    Publication date: November 27, 2003
    Inventor: Yasuhiro Sakai
  • Publication number: 20030139155
    Abstract: In a self-power generation type transmitter, piezoelectric elements are used as a power source for transmission and generated power is efficiently utilized so that the transmission of a signal requiring a relatively high electric power can be performed. The self-power generation type transmitter includes a power generating part 2 for generating electric power by applying distortion to piezoelectric elements 21, a charging part 3 for repeatedly charging generated power, and a transmitting part 4 for transmitting a signal by the charged power. When an amount of charged power reaches a level at which the signal can be transmitted, the electric power is supplied to the transmitting part from the charging part.
    Type: Application
    Filed: October 29, 2002
    Publication date: July 24, 2003
    Inventor: Yasuhiro Sakai
  • Patent number: 6531180
    Abstract: To provide a transparent resin which is suitable in the process of producing a coating for electronic materials, a glass having both of the scattering-preventing function and the antireflective function, an adhesive agent, a shock-absorbing material, an ultraviolet-cutting sheet for televisions, a filter for VDTs and a high refractive index primer composition as well as the process for the production of primer-coated lenses using said primer composition, is excellent in a coatability, adhesive property, storage stability, durability, shock resistance and the like, and is particularly excellent in a transparency and adhesive property after curing of the same. A transparent resin having an adhesive property characterized by comprising a cured product of the polymerizing composition which comprises at least one of diallyl phthalate, diallyl isophthalate and diallyl terephthalate, and pentaerythritol tetra(3-mercaptopropionate).
    Type: Grant
    Filed: September 6, 2000
    Date of Patent: March 11, 2003
    Assignee: Pentax Corporation
    Inventors: Hidenori Takushima, Yasuhiro Sakai