Sanyo Electric Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Hitachi Metals, Ltd.

Yanmar Co., Ltd.

Sun Electronic Industries Corp.

Hiroyuki Okuda

Takashi Ogura

Kazuo Ino

Yoshiaki Shimizu

Kousou Ishihara

Hideharu Takezawa

Yuko Ogawa

Yuki Tokuda

Koso Ishihara

Takao Yamano

Naoyuki Okamoto

Jyoichi Tamada

Tsukasa Shimizu

Hiroyuki Ohno

Isao Tanaka

Keiko Matsuoka

Fumio Tatezono

Taisuke Hirooka

Seiji Omura

Masakazu Hosogi

Yutaka Taketani

Naoto Matono

Takahiro Ogawa

Kenji Kakuma

Kazuhiro Kato

Yutaka Ueta

Fumio Kameoka

Katsumi Umeda

Atsushi Furuzawa

Shinroh Itoh

Yoshifumi Fukumoto

Kouzo Ishihara

Toshinori Urano

Kazuhiro Koga

Kiyotaka Itou

Masaru Doi

Junichi Yamashita

Takashi Yanai

An electrode group includes a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a positive electrode lead electrically connected to the positive electrode. The positive electrode includes a positive electrode current collector and a positive electrode active material layer carried on each main surface of the positive electrode current collector. The positive electrode current collector has an exposed section that does not carry the positive electrode active material layer. The negative electrode includes a negative electrode current collector and a negative electrode active material layer carried on each main surface of the negative electrode current collector and has a first region and a second region. The mass of the negative electrode active material layer in the first region per unit area is smaller than the mass of the negative electrode active material layer in the second region per unit area.

Secondary battery

The cylindrical secondary battery is provided with a wound electrode body, a positive electrode tab connected to a positive electrode, a cylindrical case body for housing the electrode body and the positive electrode tab, and a sealing body for sealing an opening of the case body. A negative electrode has, at a winding end of the negative electrode, a negative electrode current collector exposure section where no negative electrode active material layer is disposed, and the negative electrode current collector exposure section is disposed in contact with an inner surface of the case body. The positive electrode tab is disposed at the center in the longitudinal direction of the positive electrode and in a region where the number of layers of the positive electrode in a radial direction is smaller than in other regions in a cross-sectional area of the wound electrode body.

Cylindrical secondary battery

A secondary battery includes an electrode assembly including a positive electrode, a negative electrode, a first separator disposed on one side of the surface of the negative electrode and having a thickness T1, and a second separator disposed on the other side of the surface of the negative electrode and having a thickness T2. The thickness T2 of the second separator is larger than the thickness T1 of the first separator. The first separator includes a first porous film having a porosity P1, and the second separator includes a second porous film having a porosity P2. At least one of the first separator and the second separator includes a heat resistant layer. The positive electrode, the first separator, the negative electrode and the second separator are wound together such that the first separator is arranged on the outer side and the second separator is arranged on the inner side.

Secondary batteries

A single-crystal silicon carbide substrate has a main surface having a surface roughness fulfilling Ra&#x2264;1 nm, and has a ratio of hidden scratches of less than 50%, where, in the case where the main surface is arbitrary observed at 50 or more observation points with a field of view having a diameter of 100 &#x3bc;m, the ratio of hidden scratches is defined by a value obtained by dividing the number of the observation points at which a striped hidden scratch having a length of at least 50 &#x3bc;m by the total number of the observation points.

Single-crystal silicon carbide substrate, method for producing single-crystal silicon carbide substrate, and method for inspecting single-crystal silicon carbide substrate

A battery pack includes a plurality of unit cells, each including a cylindrical battery case, and a connecting member () that connects the unit cells to each other. The battery case of each unit cell includes a bottom surface portion () including a plurality of gas discharging sections () that open when an internal pressure of the unit cell reaches a predetermined pressure. The gas discharging sections () are separated from each other. The connecting member () is joined to a non-opening section () of the bottom surface portion (), the non-opening section () being disposed between the gas discharging sections ().

Electricity storage device

An engine control device is provided with a main operation unit, an auxiliary operation unit, a changeover switch, and an engine control unit. The main operation unit is capable of performing an operation of changing a rotation speed of a propulsion engine mounted on a ship. The auxiliary operation unit is capable of performing an operation of changing the rotation speed of the engine instead of the main operation unit. The changeover switch is capable of performing an operation of switching between a main ship handling state in which the rotation speed of the engine can be changed by operating the main operation unit and an auxiliary ship handling state in which the rotation speed of the engine can be changed by operating the auxiliary operation unit. The engine control unit stops the engine when the changeover operation unit is operated to switch from the auxiliary ship handling state to the main ship handling state.

Engine control device

A method for manufacturing an electrolytic capacitor including: forming a capacitor element having an anode foil and a cathode foil; impregnating the capacitor element with a dispersion solution containing particles of an electrically conductive solid or aggregates thereof and a dispersion solvent to form an electrically conductive solid layer having the particles of the electrically conductive solid or the aggregates thereof in the capacitor element ; and impregnating the capacitor element having the electrically conductive solid layer with a solvent containing no supporting salt.

Method for manufacturing electrolytic capacitor with electrically conductive solid layer and electrolytic capacitor with electrically conductive solid layer

A method for producing a single crystal scintillator material according to the present invention includes the steps of: providing a solvent including: at least one element selected from the group consisting of Li, Na, K, Rb and Cs; W and/or Mo; B; and oxygen; melting a Ce compound and a Lu compound that have been mixed with the solvent by heating the mixture to a temperature of 800&#xb0; C. to 1,350&#xb0; C.; and growing a single crystal by cooling the compounds melted. The single crystal is represented by the compositional formula (CeLu)BO, in which the mole fraction x of Ce satisfies 0.0001&#x2266;x&#x2266;0.05.

Single crystal scintillator material, method for producing same, radiation detector and PET system

A single crystal scintillator material according to the present invention includes a single crystal portion that is represented by the compositional formula (CeLu)BOin which the mole fraction x of Ce satisfies 0.0001&#x2266;x&#x2266;0.05.

Single crystal scintillator material and method for producing the same

A solid electrolytic capacitor according to the present invention has: a capacitor element () having an anode terminal () protruding; a resin sheath () that covers the capacitor element (); an anode lead frame () having an anode-side terminal surface () that is connected to a tip section of the anode terminal () of the capacitor element () and exposed from the resin sheath (); and a cathode lead frame (). The anode lead frame () includes, in a portion thereof embedded in the resin sheath (), a spaced frame section () that extends along the anode terminal () at a distance from the anode terminal () and a bonding frame section () that protrudes from a center portion of the spaced frame section () to the anode terminal () and is bonded to the anode terminal ().

Solid electrolytic capacitor

The invention provides a thin film magnetic head including an upper core layer 9 which comprises a front first core layer 91a formed on a gap spacer layer 6 and having the same width as a track width on the recording medium at least in the vicinity of the face to be opposed to a recording medium, and a second core layer 92 extending from the medium-opposed face over the upper surface of the front first core layer 91a and further over the upper surface of an upper insulating layer 72. The upper core layer 9 has a thickness greater in a region extending from the medium-opposed face to a depth end restricting face DE of a lower insulating layer 71 than in a region extending over the upper surface of the upper insulating layer 72. The front first core layer 91a has an upper surface flush with the upper surface of the lower insulating layer 71. This structure gives an accurate track width and assures production with a high yield.

Process for producing thin film magnetic heads

A magnetic head comprises a first abutting segment formed with a winding groove having an open side, and a second abutting segment opposed to the open side of the groove and joined to the first segment. The first abutting segment comprises a first core segment having the groove, and gap spacers and second ferromagnetic thin films formed on the surface thereof opposed to the second segment and positioned above and below the groove. The first core segment comprises a core segment member made of a ferromagnetic material, formed with the groove and having a first ferromagnetic thin film which is formed on the surface thereof opposed to the second abutting segment and which is positioned toward the face of the head to be opposed to recording media. The second abutting segment has a face to be opposed to the recording medium and formed by a nonmagnetic material.

Magnetic head for magnetic recording and reproduction

A magnetic head comprises a pair of magnetic core halves, heat-resistant thin films and ferromagnetic thin films, the pair of magnetic core halves being opposed to each other through a non-magnetic material such as SiO.sub.2 to form a magnetic gap. The magnetic core halves are made of a ferromagnetic oxide such as ferrite and have gap forming faces to be opposed to each other to form the magnetic gap. The gap forming faces are etched by phosphoric acid solution and then purified by reverse sputtering, so that a grown crystal of the ferromagnetic oxide is exposed on the gap forming faces. A heat-resistant thin film of a heat-resistant material such as SiO.sub.2 is formed on each of the gap forming faces. A ferromagnetic thin film of a ferromagnetic metal material such as sendust is formed on each heat-resistant thin film. Preferably, the thickness of the heat-resistant thin film to be formed is 1 nm or more and one tenth or less of the width of the magnetic gap. For example, SiO.sub.2 films of 5 nm in thickness as the heat-resistant thin films are formed on the respective gap forming faces and sendust films of 3 .mu.m in thickness as the ferromagnetic metal thin films are formed on the respective SiO.sub.2 films. In this case, the gap length of the magnetic gap is set to 0.2 .mu.m.

Magnetic head with suppressed generation of pseudogap

A process for producing a magnetic head of the floating type having a head portion and a slider portion comprises preparing a core block 7 having arranged on a plane a head forming portion and a slider forming portion for providing the head portion and the slider portion, respectively, and forming at least one pair of track width defining grooves 14, 14 across a gap spacer 4 by dry-etching a surface 8 of the core block 7 which is to be opposed to media to form a magnetic gap portion G by a portion of the gap spacer of a predetermined track width between the pair of grooves.

Process for producing magnetic head of the floating type

Growing community of inventors

Osaka, Japan

Hiroyuki Okuda