Patents by Inventor Hirofumi Yamada

Hirofumi Yamada 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: 20080119008
    Abstract: A molecular device of the present invention is arranged so that a self-organizing monomolecular layer is formed on an oxide layer made of an oxide of a substrate by being chemically bonded with the surface of the oxide layer, and nano structures are formed on the monomolecular film. With this arrangement, the present invention provides a molecular device which causes less interaction between the substrate and nanostructures arranged on the substrate, thereby realizing easier control of orientation of nano structures on the substrate. The present invention also provides a manufacturing method of the molecular device.
    Type: Application
    Filed: August 30, 2005
    Publication date: May 22, 2008
    Inventors: Yuji Miyato, Kei Kobayashi, Hirofumi Yamada, Kazumi Matsushige
  • Patent number: 7292696
    Abstract: The present invention is an electret condenser microphone that includes an electro-acoustic transducer (M) having an electret portion (E) including a diaphragm (6) acting as an electrode and a stationary electrode (2, 25) disposed in opposition to the diaphragm (6), and a FET (10) effecting an impedance conversion on an output from the electro-acoustic transducer (M) and then outputting the converted output on a signal line (L). A capacitor (11) and a varistor (12) are provided in parallel between the signal line (L) and a ground (18) and a resistor (13) is incorporated in series in the signal line (L).
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: November 6, 2007
    Assignee: Hosiden Corporation
    Inventors: Shinichi Saeki, Hirofumi Yamada
  • Publication number: 20060121203
    Abstract: A totally new method for manufacturing a thin film wherein only an arbitrary small region is structurally controlled. The structure of a film is controlled by applying a force to the entire film or an arbitrary region of the film using a part having a sharp tip during the film-forming process or after finishing the film formation. At this time, the temperature of the film is set at the glass transition point of the amorphous region or higher. An atomic force microscope can be used as an apparatus for realizing this manufacturing method.
    Type: Application
    Filed: September 11, 2003
    Publication date: June 8, 2006
    Inventors: Kuniko Kimura, Kei Kobayashi, Hirofumi Yamada, Toshihisa Horiuchi, Kenji Ishida, Kazumi Matsushige
  • Publication number: 20050089180
    Abstract: An electret condenser microphone of small power consumption and capable of rejecting noise over a broad band, the electret condenser microphone being suitable for use as e.g. a microphone in a mobile telephone or a sensor disposed inside an engine room of an automobile. The microphone includes an electro-acoustic transducer (M) having an electret portion (E) provided at least one of a diaphragm (6) acting as an electrode and a stationary electrode (2, 25) disposed in opposition to the diaphragm (6), and an FET (10) effecting an impedance conversion on an output from the electro-acoustic transducer (M) and then outputting the converted output. The FET (10) is of MOS type. Further, a capacitor (11) and a varistor (12) are provided in parallel between the signal line (L) of the FET (10) and the ground (18) and a resistor (13) is incorporated in series in the signal line (L).
    Type: Application
    Filed: January 30, 2003
    Publication date: April 28, 2005
    Inventors: Shinichi Saeki, Hirofumi Yamada
  • Patent number: 6835439
    Abstract: A panel for an airbag of an automobile is formed by integrally molding a cover body, which is made of a synthetic resin, with a main body, made of another synthetic resin. The panel includes a joint portion, joined with the cover body, and provided around an opening portion formed in the main body. The joint portion constitutes an overlapping portion in which an outer peripheral edge of the cover body is overlapped as being arranged on the inner side of an opening edge of the main body.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: December 28, 2004
    Assignee: Toyota Shatai Kabushiki Kaisha
    Inventors: Yasuo Kondo, Nobuo Inomata, Takashi Ueda, Isao Hayashi, Tsutomu Okano, Haruo Fukuda, Yusaku Furukawa, Torao Kanayama, Akihiro Miwa, Hirofumi Yamada
  • Patent number: 6823724
    Abstract: A method of detecting the distribution of values of a physical property such as the dopant concentration of a semiconductor without being adversely affected by stray capacitance is offered. A scanning probe microscope capable of implementing this method is also offered. The method starts with applying an AC voltage of angular frequency &ohgr; between a probe and a sample from a fixed oscillator. The output from the oscillator is supplied to a piezoelectric device that drives the cantilever. The cantilever produces a deflection signal corresponding to forces corresponding to interactions between the probe and sample. A signal regarding the amplitude is extracted from the deflection signal. This signal is fed back to a means for controlling the distance between the probe and sample and supplied to a display device. As a result, an image of the surface topography of the sample is obtained.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: November 30, 2004
    Assignees: JEOL Ltd., Kyoto Instruments Co., Ltd.
    Inventors: Kei Kobayashi, Hirofumi Yamada, Kazumi Matsushige
  • Patent number: 6759003
    Abstract: Blow-molding molds 10 and 20 having parison shutters 31 and 32 for preventing an inflation of the parison 3 toward the outside of the molds 10 and 20 are used in a blow-molding method of the present invention. In other words, a closed space for preventing the parison 3 from inflating out of the molds 10 and 20 are formed by the parison shutters 31 and 32 and a predetermined air is secured in the parison 3 in a frame clamping step (B). In the subsequent mold clamping step (C), the pressure inside the parison 3 starts to be increased when the molds 10 and 20 press the parison 3, so that the parison 3 can be continuously in contact with the die design surface 11. Accordingly, since the parison 3 can be uniformly contracted by cooling, molding failure such as streaks and uneven pattern transfer can be avoided, thus obtaining a blow-molded product having good appearance.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: July 6, 2004
    Assignees: Idemitsu Petrochemical Co., Ltd., Toyota Shatai Kabushiki Kaisya
    Inventors: Tomoyuki Obara, Katsuhiko Tada, Sueki Sugawara, Shoichi Miura, Hirofumi Yamada, Shigekazu Kumazaki
  • Patent number: 6264866
    Abstract: A method for producing a polyimide film in which the imidation ratio and/or the amount of volatile constituent are controlled to improve the adhesive strength of the polyimide film. The method may also comprise controlling the highest temperature of heating the prefilm to improve the adhesive strength of the polyimide film.
    Type: Grant
    Filed: June 10, 1998
    Date of Patent: July 24, 2001
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hirofumi Yamada, Manabu Fukudome, Naoki Egawa, Yuzuru Kondo, Haruhiko Maki
  • Patent number: 6255388
    Abstract: A shrink film is provided which is superior in glossiness, mechanical strength, and rigidity, and which is also provided with a property of preventing natural shrinkage. The shrink film with excellent properties is produced by using a resin composition which is obtained by graft polymerization of copolymers of styrene and butadiene with styrene, methylmethacrylate, and butylacrylate. The thus obtained resin composition is extruded after melting and kneading, and drawn into a film in two directions, and exposed at a temperature within a temperature range for the thermal setting so as to obtain the orientation according to ASTM D1504 of the shrink film in range of 1.5 to 5.0 MPa.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: July 3, 2001
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Hirofumi Yamada, Yoshiaki Murata, Hidetsugu Sawada, Kosuke Arai
  • Patent number: 5489774
    Abstract: A combined atomic force and near field microscope assembly for atomic level inspection of a target object. The assembly includes a scanning probe with a sharp tip and a photosensitive region on its lower surface. A sample is disposed on a glass substrate and exposed to an evanescent wave generated on the glass substrate by total internal reflection. An optical probe comprising a microfabricated cantilever having an apex in close proximity to a photosensitive region is disposed in close proximity to a sample. The photosensitive region collects light generated by FTR at the apex of the optical probe due to local disruptions of the evanescent field caused by the probe tip. A cantilever displacement mechanism is included so as to allow for operation in a second mode as a conventional atomic force microscope.
    Type: Grant
    Filed: September 20, 1994
    Date of Patent: February 6, 1996
    Assignee: The Board of Trustees of the Leland Stanford University
    Inventors: Shinya Akamine, Hirofumi Yamada
  • Patent number: 5186789
    Abstract: A cantilever stylus suited for use in an atomic force microscope is made in the following processes: forming a first film on a substrate; forming a second film of metallic material on an external surface of the first film; forming a photoresist film on an external surface of the second film by making use of a photolithography technique; performing etching with respect to the second film with only a portion thereof covered with the photoresist film left on the first film; and further performing etching with respect to the first film with the second film being used as a resist film so that the first film may be configured into a cantilever stylus.
    Type: Grant
    Filed: November 29, 1991
    Date of Patent: February 16, 1993
    Assignees: Agency of Industrial Science and Technology, Matsushita Electric Industrial Co., Ltd.
    Inventors: Nobuhiro Tsuda, Hirofumi Yamada, Hiroyuki Kado, Takao Tohda
  • Patent number: 5051594
    Abstract: A fine positioning device such as a stage device for placing a probe or a sample thereon in a scanning tunneling microscope comprises a fixed member, a first structure spring stage having a first base member integral with the fixed member, a first moving member and a first resilient member for resiliently coupling the first base member and the first moving member such that they are displaceable relative to each other in a predetermined direction, a first actuator for displacing the first moving member relative to the base member in the predetermined direction, a second structure spring stage having a second base member integral with the first moving member, a second moving member and a second resilient member for resilient coupling the second base member and the second moving member such that they are displaceable relative to each other in a direction parallel to the predetermined direction, and a second actuator for displacing the second moving member relative to the second base member in the parallel direct
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: September 24, 1991
    Assignees: Japan Ministry of International Trade and Industry, Toshiba Corporation, Nikon Corporation
    Inventors: Nobuhiro Tsuda, Hirofumi Yamada, Fumihiko Ishida, Masayuki Miyashita
  • Patent number: 4187616
    Abstract: A method of cooling board materials of inorganic substance wherein after aging treatment in an autoclave using saturated steam of high temperature and high pressure, the board material is left in the autoclave and the pressure therein is reduced to less than one atmosphere, and then the reduced pressure is retained at a stationary state until the temperature of the board material falls to about the temperature at which water does not boil, and then removing the board material from the autoclave. The board material may also be subjected to a drying treatment by alternately supplying saturated steam and reduced pressure after aging and prior to cooling.
    Type: Grant
    Filed: May 10, 1978
    Date of Patent: February 12, 1980
    Assignee: Kubota, Ltd.
    Inventors: Hirofumi Yamada, Noboru Takaki, Michio Masuda
  • Patent number: 4132590
    Abstract: A method of producing an inorganic substance board, wherein after preparation, such as by use of paper making process, the board is hardened in an autoclave with saturated steam at a high temperature, high pressure and for a suitable length of time, and after hardening, subjecting the board to one or more drying cycles comprising a vacuum treatment at 60 to 300 Torrs, for a suitable length of time to enable the core of the board to reach a suitable temperature, the application of saturated steam at 2 to 12 Kg/cm.sup.2 pressure and 120 to 190.degree. C temperature for a period of time sufficient to allow the core to reach a suitable temperature. The number of cycles is preferably 10 or less. Advantageously, the inventive drying treatment prevents efflorescence and warping of the boards.
    Type: Grant
    Filed: March 23, 1978
    Date of Patent: January 2, 1979
    Assignee: Kubota, Ltd.
    Inventors: Hirofumi Yamada, Noboru Takaki, Michio Masuda