Patents by Inventor Masao Fukunaga

Masao Fukunaga 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: 20040160156
    Abstract: An electrode for a battery superior in conductivity with small amount of conductive material, yet with high capacity is provided by a method comprising the steps of: (a) producing a masterbatch comprising at least carbon nanotubes and a resin; (b) blending an electrode material mixture containing at least the masterbatch and an electrode active material with a dispersion medium to prepare an electrode material mixture paste; (c) applying the electrode material mixture paste onto an electrode substrate and then drying and rolling the electrode material mixture paste coated on the electrode substrate to obtain an electrode plate; and (d) cutting the electrode plate to obtain an electrode with a predetermined shape.
    Type: Application
    Filed: February 3, 2004
    Publication date: August 19, 2004
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Tsumoru Ohata, Masao Fukunaga
  • Patent number: 6773838
    Abstract: A non-aqueous electrolyte battery is provided, which exhibits good high-rate discharge characteristics and low-temperature characteristics and ensures high safety when the negative electrode contains 0.6 to 1.7 parts by weight of a particulate modified styrene-butadiene rubber as a binder and 0.7 to 1.2 parts by weight of a thickening agent so that the total amount of the binder and thickening agent is 1.3 to 2.4 parts by weight per 100 parts by weight of a carbon material as an active material, and the concentration of LiPF6 in the non-aqueous electrolyte is 0.6 to 1.05 mole/liter. The surface area of the active material effectively contributable to charging and discharging reaction is sufficient when the surface area of the carbon material per 1 g of the binder contained in the negative electrode is 300 to 600 m2.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: August 10, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kohei Suzuki, Kazunori Kubota, Motoi Kawamura, Akira Kuroda, Masao Fukunaga, Tsumoru Ohata
  • Publication number: 20030068551
    Abstract: Disclosed is a positive electrode for a non-aqueous electrolyte secondary battery, comprising: a positive electrode mixture layer; and a positive electrode current collector which carries the positive electrode mixture layer, with the positive electrode mixture layer comprising: at least one positive electrode active material; at least one conductive agent; at least one binder; and at least one thickening agent, and the thickening agent comprising a polymer containing at least one acrylonitrile unit and at least one —(CH2)n— structure portion where 6≦n.
    Type: Application
    Filed: July 23, 2002
    Publication date: April 10, 2003
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masao Fukunaga, Takao Kuromiya, Kazunori Kubota, Kohei Suzuki, Tsumoru Ohata
  • Publication number: 20030054243
    Abstract: A method for producing a non-aqueous electrolyte secondary battery comprising the steps of: (i) mixing a positive electrode active material, a first binder A and a dispersion medium to prepare a paste A, the active material comprising a lithium-containing transition metal oxide; (ii) mixing a conductive agent, a second binder B and a dispersion medium to prepare a paste B, the conductive agent comprising carbon black; (iii) mixing the paste A and the paste B to prepare a positive electrode material paste C; (iv) applying the positive electrode material paste C onto a positive electrode core member and rolling and drying the resultant member to prepare a positive electrode; and (v) fabricating a battery using the positive electrode, a negative electrode and a non-aqueous electrolyte, wherein contact angle &thgr;A between the non-aqueous electrolyte and the binder A and contact angle &thgr;B between the non-aqueous electrolyte and the binder B satisfy the formula (1): &thgr;B−&thgr;A≧15°.
    Type: Application
    Filed: August 30, 2002
    Publication date: March 20, 2003
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kohei Suzuki, Masao Fukunaga, Toshihide Murata, Kazunori Kubota, Tsumoru Ohata
  • Patent number: 6444172
    Abstract: A water quality meter is composed of a plurality of water quality monitoring meters including analyzing units for analyzing water samples introduced from a water distribution pipe, each analyzing unit analyzing the water samples and a measuring cell, and a liquid introducing unit integrated with the analyzing units, which is composed of a single member in which a plurality of fluid flow paths for feeding various types of liquid including the water sample into the analyzing unit are formed. Furthermore, the cells and the plurality of three-dimensional fluid flow paths formed in the single member are fabricated by a micro-fabrication technique using photo-curing resin.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: September 3, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Masao Fukunaga, Tamio Ishihara, Koji Saito, Katsutoshi Yamada, Hideo Enoki, Sadao Mori, Ryo Miyake, Takao Terayama, Masatoshi Kanamaru
  • Patent number: 6398930
    Abstract: A water quality meter is composed of a plurality of analyzing units for analyzing water samples introduced from a water distribution pipe, each analyzing unit including a reagent mixing cell and a measuring cell, and a liquid introducing unit integrated with the analyzing units, which is composed of a single member in which a plurality of fluid flows paths for feeding various types of liquid including the water sample into the analyzing unit are formed. Furthermore, the cells and the plurality of three-dimensional fluid flow paths formed in the single member are fabricated by a micro-fabrication technique using photo-curing resin. In one embodiment, a photometer is situated in the flow path in at least one analyzing unit for measuring absorbency of the liquid. In another embodiment, a pair of electrodes, for measuring electric conductivity or pH, is disposed in a measurement flow path in at least one of the analyzing units.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: June 4, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Masao Fukunaga, Tamio Ishihara, Koji Saito, Katsutoshi Yamada, Hideo Enoki, Sadao Mori, Ryo Miyake, Takao Terayama, Masatoshi Kanamaru
  • Publication number: 20020061440
    Abstract: A non-aqueous electrolyte battery is provided, which exhibits good high-rate discharge characteristics and low-temperature characteristics and ensures high safety when the negative electrode contains 0.6 to 1.7 parts by weight of a particulate modified styrene-butadiene rubber as a binder and 0.7 to 1.2 parts by weight of a thickening agent so that the total amount of the binder and thickening agent is 1.3 to 2.4 parts by weight per 100 parts by weight of a carbon material as an active material, and the concentration of LiPF6 in the non-aqueous electrolyte is 0.6 to 1.05 mole/liter. The surface area of the active material effectively contributable to charging and discharging reaction is sufficient when the surface area of the carbon material per 1 g of the binder contained in the negative electrode is 300 to 600 m2.
    Type: Application
    Filed: May 1, 2001
    Publication date: May 23, 2002
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kohei Suzuki, Kazunori Kubota, Motoi Kawamura, Akira Kuroda, Masao Fukunaga, Tsumoru Ohata
  • Publication number: 20020037450
    Abstract: A non-aqueous electrolyte secondary battery comprises: a positive electrode sheet comprising a positive electrode mixture containing a lithium-containing transition metal oxide as an active material and a particulate binder; a negative electrode sheet comprising a negative electrode mixture containing a carbon material; a separator interposed between the positive electrode sheet and the negative electrode sheet; and a non-aqueous electrolyte containing a lithium salt, wherein the positive electrode sheet and the negative electrode sheet are wound with the separator interposed therebetween to form an electrode assembly, and the positive electrode mixture has an active material density of 3.0 to 4.0 g/ml. The battery has a long life, high energy density and high output.
    Type: Application
    Filed: July 26, 2001
    Publication date: March 28, 2002
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kohei Suzuki, Kazunori Kubota, Akira Kuroda, Motoi Kawamura, Masao Fukunaga, Tsumoru Ohata
  • Publication number: 20010040095
    Abstract: A capillary array includes a light detection portion, a sample supply portion, a buffer solution supply portion and a voltage application portion which are necessary functions for electrophoresis, thereby, when assembling the capillary array into an electrophoresis apparatus, the same can be immediately used. Accordingly, a capillary array is provided which can be easily incorporated into an electrophoresis apparatus.
    Type: Application
    Filed: May 1, 2001
    Publication date: November 15, 2001
    Inventors: Yasushi Shimizu, Toshiaki Kita, Kiyoshi Tsukada, Akihiro Suzuki, Tomonari Morioka, Masaya Kojima, Ryoji Inaba, Daizo Tokinaga, Shuhei Yamamoto, Yoshiyuki Okishima, Masao Fukunaga, Takayasu Furukawa, Tomohiro Shoji
  • Patent number: 6290908
    Abstract: A water quality meter is composed of a plurality of analyzing units for analyzing water samples introduced from a water distribution pipe, each analyzing unit including a reagent mixing cell and a measuring cell, and a liquid introducing unit integrated with the analyzing units, which is composed of a single member in which a plurality of fluid flow paths for feeding various types of liquid including the water sample into the analyzing unit are formed. Furthermore, the cells and the plurality of three-dimensional fluid flow paths formed in the single member are fabricated by a micro-fabrication technique using photo-curing resin.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: September 18, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Masao Fukunaga, Tamio Ishihara, Koji Saito, Katsutoshi Yamada, Hideo Enoki, Sadao Mori, Ryo Miyake, Takao Terayama, Masatoshi Kanamaru
  • Publication number: 20010013488
    Abstract: A water quality meter is composed of a plurality of analyzing units for analyzing water samples introduced from a water distribution pipe, each analyzing unit including a reagent mixing cell and a measuring cell, and a liquid introducing unit integrated with the analyzing units, which is composed of a single member in which a plurality of fluid flow paths for feeding various types of liquid including the water sample into the analyzing unit are formed. Furthermore, the cells and the plurality of three-dimensional fluid flow paths formed in the single member are fabricated by a micro-fabrication technique using photo-curing resin.
    Type: Application
    Filed: April 10, 2001
    Publication date: August 16, 2001
    Inventors: Masao Fukunaga, Tamio Ishihara, Koji Saito, Katsutoshi Yamada, Hideo Enoki, Sadao Mori, Ryo Miyake, Takao Terayama, Masatoshi Kanamaru
  • Publication number: 20010011642
    Abstract: A water quality meter is composed of a plurality of analyzing units for analyzing water samples introduced from a water distribution pipe, each analyzing unit including a reagent mixing cell and a measuring cell, and a liquid introducing unit integrated with the analyzing units, which is composed of a single member in which a plurality of fluid flow paths for feeding various types of liquid including the water sample into the analyzing unit are formed. Furthermore, the cells and the plurality of three-dimensional fluid flow paths formed in the single member are fabricated by a micro-fabrication technique using photo-curing resin.
    Type: Application
    Filed: April 10, 2001
    Publication date: August 9, 2001
    Inventors: Masao Fukunaga, Tamio Ishihara, Koji Saito, Katsutoshi Yamada, Hideo Enoki, Sadao Mori, Ryo Miyake, Takao Terayama, Masatoshi Kanamaru
  • Patent number: 6245224
    Abstract: A water quality management system for managing the water quality in a water supply network having water pipe lines running from the purification plant to consumers' faucets to maintain the water quality at the consumers at the terminals of the network at an appropriate level. The water quality monitors for measuring the quality of water in the pipe lines are installed in the small-pipe water distribution network branching from the water distribution main pipe network and running toward the consumers. The water distribution facility for improving the water quality is installed at the base point of the small-pipe water distribution network. The water quality in the small-pipe water distribution network is managed based on the signals from the water quality monitors.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: June 12, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Hideo Enoki, Sadao Mori, Masao Fukunaga, Tamio Ishihara
  • Patent number: 6159770
    Abstract: There is provided a method for fabricating semiconductor devices including resin packages sealing semiconductor elements and external connection terminals respectively resin projections formed on the resin packages and metallic film parts provided to the resin projections. The semiconductor elements are mounted to a lead frame having recess portions located in positions corresponding to positions of the resin projections, metallic film parts being provided in the recess portions. The semiconductor elements are electrically connected to the metallic film parts. The resin packages that seal the semiconductor elements and gate portions are integrally formed with the resin packages. The lead frame is etched so that the resin packages are separated from the lead frame together with the metallic layer parts. The resin packages are attached to an adhesive tape provided to a frame and being used as a carrier.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: December 12, 2000
    Assignee: Fujitsu Limited
    Inventors: Masafumi Tetaka, Shinichiro Maki, Nobuo Ohyama, Seiichi Orimo, Hideharu Sakoda, Yoshiyuki Yoneda, Akihiro Shigeno, Ryoichi Yokoyama, Fumitoshi Fujisaki, Masao Fukunaga, Kazuto Tsuji, Terumi Kamifukumoto, Kenji Itasaka, Masanori Onodera
  • Patent number: 5675415
    Abstract: A physical quantity measuring apparatus in which the measurement range of the physical quantity such as displacement, pressure or the like can be widened. Laser beams different in wavelength are radiated through an optical fiber onto a diaphragm and the light reflected on the diaphragm and the light reflected on a reference face opposite to the diaphragm are returned to the optical fiber so that the distance between the reference face and the diaphragm which is transformed, and hence a pressure difference, is measured by a light interference method. The quantity of displacement of the diaphragm is measured optically by using laser beams different in wavelength from each other so that it is possible to make the measurement accuracy high and to effect measurement in a wide range with respect to a physical quantity such as displacement, pressure, or the like, without being influenced by a change in characteristic of the optical fiber.
    Type: Grant
    Filed: July 12, 1995
    Date of Patent: October 7, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Toshio Akatsu, Sadao Mori, Masao Fukunaga
  • Patent number: 5554809
    Abstract: A compact pressure differential/pressure detector is a process detection apparatus for measuring a pressure, a level, a pressure differential of a process fluid. The detector is constructed of a pressure sensing block having sensors for sensing a pressure and a pressure differential, a signal processing block for processing signals from the pressure sensing block, and a terminal board block for receiving power supply from outside and transmitting signals to outside. These blocks are arranged along the same axis. Furthermore, an indicator indicating a process state is also arranged along the same axis and received in a covering case. The case is firmly attached to the pressure sensing block. The process detection apparatus permits a compact design and offers an excellent maintainability.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: September 10, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Tomoyuki Tobita, Yoshimi Yamamoto, Masao Fukunaga, Teruo Kobayahsi, Akira Nagasu
  • Patent number: 5522043
    Abstract: An autonomous distributed field bus system includes a host apparatus disposed in a control room, a plurality of detection and control blocks disposed in a field, and a bus line for connecting the host apparatus to the plurality of blocks. Each of the plurality of control blocks includes a detection device, an arithmetic and control device and an operating device, and forms a control loop. The arithmetic and control device produces a control signals by using control parameters stored therein on the basis of the measured value detected by the detection device. The operating device is operated by the control signal. Control operation is thus performed in each of the blocks without participation of the host apparatus.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: May 28, 1996
    Assignee: Hitachi, Ltd.
    Inventor: Masao Fukunaga
  • Patent number: 5469746
    Abstract: An electromagnetic flow meter for industries includes a transducer and a signal processor provided separately from the transducer. The transducer having an exciting circuit, an amplifying and calculating part and a transmitting part outputs an analog flow rate signal and digital signals which are superimposed to the an analog flow rate signal to the signal processor. The analog signal sent to the signal processor is passed through the signal processor without receiving any signal processing and the digital signals are sent into the transducer or taken into the signal processor through alternating current coupling means. The data transmission is diagnosed by checking the conformity between the data stored in the signal sending part and the received data. Data set in a data setting part provided in the signal processor are sent to the transducer through a transmitting cable in which the flow rate data are also transmitted.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: November 28, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Masao Fukunaga, Yutaka Sakurai, Kouji Saito, Tamio Ishihara
  • Patent number: 5458003
    Abstract: An electromagnetic flow meter comprises a ceramic measuring pipe formed into a straight cylinder through which fluid to be measured flows, electromagnetic field generating device disposed adjacent to a central portion of an outer surface of the central portion of the ceramic measuring pipe for generating an electromagnetic field into a radial direction of the ceramic measuring pipe, electrodes for detecting an electric potential generated in the fluid, a case which accommodates the ceramic measuring pipe, the electromagnetic field generating device and the electrodes, and sealing members which are disposed between inner surfaces of the flanges of the case and ends of outer circumference of the ceramic measuring pipe. The case has a length longer than that of the ceramic measuring pipe and flanges at both ends thereof. Inner diameters of the flanges are slightly larger than an outer diameter of the ceramic measuring pipe.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: October 17, 1995
    Assignees: Hitachi, Ltd., Hitachi Instrument Engineering Co, Ltd.
    Inventors: Tamio Ishihara, Yutaka Sakurai, Masao Fukunaga, Shigeo Nishino, Souzo Fujimoto
  • Patent number: 5207105
    Abstract: An apparatus in which a magnetic field is generated by an excitation coil provided in the outside of a conduit and electromotive force generated in electrodes attached on the conduit is detected to thereby measure a flow rate of a fluid flowing in the conduit, in which the conduit is made thinner in a manner so that a ratio of the axial length of the conduit to the inside diameter of the conduit is set to a value within a range of from 0.2 to 1.0, and in which correction data previously analyzed in accordance with magnetic permeability and inside surface conductivity of a mate piping to which the conduit is to be connected are stored so that a detection signal from the electrodes is corrected on the basis of the correction data to thereby measure the flow rate of the fluid flowing in the conduit.
    Type: Grant
    Filed: June 14, 1990
    Date of Patent: May 4, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Masao Fukunaga, Ikuo Uematsu, Masahiro Ikegawa, Masayuki Kaiho