Tdk Corporation

Stanley Electric Co., Ltd

Asahi Glass Company, Limited

Olympus Medical Systems Corporation

Olympus Optical Company, Ltd.

Olympus Corporation

Agc Inc.

Nittan Company Limited

Akio Ogawa

Hiroyuki Kato

Michihiro Sano

Tomofumi Yamamuro

Hiroshi Kotani

Tetsuo Abe

Hiroshi Shindou

Naochika Horio

Hiroshi Shindo

Masao Yamaguchi

Masahiro Sasaki

Atsushi Tsuji

Takayoshi Iwanami

Kazushige Tohta

Tsutomu Chikamatsu

Masaki Kouzu

Kenichi Suzuki

Hiroyuki Arioka

Ryuji Hashimoto

Shigeru Aida

Kyung-Ku Choi

Katsuya Ueno

Toshiki Aoi

Osamu Fukuroi

Hisashi Kuroshima

Daisaku Negoro

Keiichi Ikegami

Manabu Yajima

Tsugihiro Hasebe

Akira Suzuki

Hisao Yabe

Yasuhiro Suzuki

Hideo Ito

Takashi Fujii

Junji Tominaga

Yoshihiro Iida

Kazuyuki Kobayashi

Toshiaki Noguchi

Yoshinao Oaki

Hideto Onishi

Ichiro Nakamura

Eiri Suzuki

Hitoshi Hasegawa

Jumpei Nomura

Masanori Gocho

Koji Koda

Shintaro Fukunaga

Atsuko Motai

Haruhiko Yamaguchi

Kojiro Kotani

Toshiyuki Chisaka

Satoshi Otsugu

Kazuyuki Goto

Atsushi Nagasaki

Koichi Takayama

Nobuyuki Nakanishi

Mikihiko Nakagawa

Hideki Dohi

Yasuro Kingo

Yutaka Ohyama

Toshihara Kinoshita

Kazunori Matsuiwa

Masaki Ohashi

Kazuyoshi Nakajima

Teruhiko Yasuda

Kiyotaka Shindo

Satoshi Itoya

Noriaki Ito

Yuji Tanonaka

To provide a method for producing an aqueous liquid containing a vinyl polymer, of which the production efficiency is high, without lowering the yield of the vinyl polymer. When removing a hydrophilic organic solvent from a mixed liquid comprising a vinyl polymer, the hydrophilic organic solvent and water to produce an aqueous liquid containing the vinyl polymer, a liquid phase and a gas phase are formed in a closed container, a part of the liquid of the liquid phase is formed into small droplets and brought into contact with the gas phase to vaporize the hydrophilic organic solvent, and the vaporized hydrophilic organic solvent is removed from the closed container. Specifically, for example, a closed containerhaving a liquid inlet, a gas outlet, a liquid outlet, a liquid inletand a liquid outletwhich are connected and having an external circulating system provided with means to control the temperature and the pressure of liquid, is filled with a mixed liquidto form a liquid phaseand a gas phase, the mixed liquidof the liquid phaseis circulated from the liquid outletto the external circulating system, and the temperature and the pressure of the mixed liquidin the external circulating systemare controlled to conditions such that the hydrophilic organic solvent is easily vaporized in liquid droplets in the gas phase, followed by discharging the mixed liquidin the form of the small droplets from the liquid inletto the gas phaseand draining the gas in the gas phasefrom the gas outlet

Method for producing vinyl polymer-containing aqueous liquid and method for producing water/oil resistant agent

A magnetic measurement device which can measure the magnetic characteristics in a microregion of a thin plate magnetic sample. After a magnetic sample is applied by a magnetic field and magnetized accordingly, by scanning the magnetic sample using a measuring part, the magnetic flux leakage in the magnetic sample can be measured. The magnetic flux leaks outside by magnetizing a first region and a second region of the magnetic sample in reciprocally opposite directions and reducing the demagnetizing field. Specifically, a magnetic field generating part with at least a pair of magnetic poles is used to perform the magnetization of multiple poles, or the magnetic field generating part applies a damped oscillation magnetic field to perform the magnetization, or a local magnetic field generating part which applies an alternating magnetic field and scans the surface of the sample at the same time is used to perform the magnetization.

Magnetic measurement device

In an optical deflector apparatus including a mirror, an inner frame, an outer frame, an inner piezoelectric actuator adapted to flex the mirror around an axis of the mirror, an outer piezoelectric actuator adapted to flex the mirror around the axis of the mirror, and a driver adapted to generate an offset drive voltage and a rocking drive voltage. The offset drive voltage is applied to a first piezoelectric actuator selected from the inner piezoelectric actuator and the outer piezoelectric actuator. The rocking drive voltage is applied to a second piezoelectric actuator different from the first piezoelectric actuator.

Optical deflector apparatus capable of increasing offset deflecting amount of mirror

An optical deflector includes a mirror structure having a symmetrical axis on a plane of the mirror structure, an outer frame surrounding the mirror structure, and at least one meander-type piezoelectric actuator coupled between the mirror structure and the outer frame and having a plurality of piezoelectric cantilevers in parallel with the symmetrical axis folded at folded portions. The mirror structure is divided into a first half portion and a second half portion along the symmetrical axis. The first half portion is close to a closest one of the folded portions, and the second half portion is far from the closest one of the folded portions. A mass of the second half portion is larger than a mass of the first half portion.

Optical deflector including meander-type piezoelectric actuators and ill-balanced mirror structure

A magnetic measurement device which measures coercivity and coercivity distribution in a microregion of a thin plate magnetic sample with high coercivity. A magnetic sample is applied with a magnetic field in a first direction and magnetized, a second magnetic field is applied in a direction opposite to the first, a measuring part scans the sample, measuring magnetic flux leakage due to remnant magnetization in the sample. The intensity of the second magnetic field is gradually increased while the measuring part repeats the measurement to obtain the second magnetic field wherein the magnitude of the leakage from the sample reaches the maximum level, and when a magnetic field equivalent to the coercivity is applied to the sample and about half of the magnetization is reversed, the sample's coercivity is obtained based on the determination that the demagnetizing field Hd reaches the minimum level and the leakage reaches the maximum level.

Provided is a treatment method for fluororesin pellets to remove hydrofluoric acid released from fluororesin pellets obtained by melt-molding a melt-moldable fluororesin. The treatment method comprises bringing a hydrofluoric acid-removing medium selected from warm water of from 30 to 200&#xb0; C., steam of from 100 to 200&#xb0; C. and warm wind of from 40 to 200&#xb0; C. into contact with fluororesin pellets obtained by melt-molding a melt-moldable fluororesin, and thereby treating the fluororesin pellets so that the amount of hydrofluoric acid released per kg of the resulting fluororesin pellets would be at most 5 &#x3bc;g as determined after the storage of the resulting fluororesin pellets at 35&#xb0; C. for 15 days.

Treatment method for fluororesin pellets

Provided is a method for producing an ethylene-tetrafluoroethylene copolymer powder, whereby it is possible to simply and inexpensively produce an ethylene-tetrafluoroethylene copolymer powder excellent in handling efficiency from a slurry having an ethylene-tetrafluoroethylene copolymer dispersed in a fluorinated organic solvent. A method for producing an ethylene-tetrafluoroethylene copolymer powder, which comprises feeding, at a feeding linear velocity exceeding 0.10 m/sec., a slurry having ethylene-tetrafluoroethylene copolymer microparticles dispersed in a specific fluorinated organic solvent, to a centrifugal thin-film evaporatorhaving a cylindrical heat-conducting barrel, a first heating portionfor heating the heat-conducting barrel, and a rotary stirring portionwherein a rotary shaftis provided with stirring bladesfor rotation in the heat-conducting barrelso that a thin film is formed on the inside wall surfaceof the heat-conducting barrel, to obtain an ethylene-tetrafluoroethylene copolymer powder.

Method for producing ethylene-tetrafluoroethylene copolymer powder

In a ZnO based compound semiconductor device, nitrogen (N) doped (Mg)ZnO:N layer is inserted as a diffusion barrier layerbetween a ZnO based n-type layerto which n-type dopants are doped and an active layeror a p-type layer. The diffusion barrier layerprevents diffusion of the n-type dopants to the active layeror the p-type layer. Crystalline quality of the active layerof the ZnO based compound semiconductor device is not deteriorated by the diffusion of the n-type dopants.

Zinc oxide based compound semiconductor device

A ZnO-containing semiconductor layer contains Se added to ZnO and has an emission peak wavelength of ultraviolet light and an emission peak wavelength of visual light. By combining the ZnO-containing semiconductor layer with phosphor or a semiconductor which is excited by the emitted ultraviolet light and emits visual light, visual light at various wavelengths can be emitted.

ZnO-containing semiconductor layer and ZnO-containing semiconductor light emitting device

To provide a method for producing ETFE granules having a low content of an ethylene/tetrafluoroethylene copolymer oligomer and being excellent in handling efficiency.

Method for granulating ethylene/tetrafluoroethylene copolymer

A ZnO based semiconductor device includes: a lamination structure including a first semiconductor layer containing ZnO based semiconductor of a first conductivity type and a second semiconductor layer containing ZnO based semiconductor of a second conductivity type opposite to the first conductivity type, formed above the first semiconductor layer and forming a pn junction together with the first semiconductor layer; and a Zn&#x2014;Si&#x2014;O layer containing compound of Zn, Si and O and covering a surface exposing the pn junction of the lamination structure.

ZnO based semiconductor device and its manufacture method

The characteristics of thin-film magnetic heads are evaluated by measuring, in a step and repeat method and apparatus, the magnetic field generated by the respective heads in a bar including multiple heads.

Method and apparatus for testing characteristics of thin-film magnetic head

A ZnO-containing semiconductor layer, doped with Se, has an emission peak wavelength in visual light and has a band gap equivalent to a band gap of ZnO.

ZnO-containing semiconductor layer, its manufacture method, and semiconductor light emitting device

A manufacture method for zinc oxide (ZnO) based semiconductor crystal includes providing a substrate having a Zn polarity plane; and reacting at least zinc (Zn) and oxygen (O) on the Zn polarity plane of said substrate to grow ZnO based semiconductor crystal on the Zn polarity plane of said substrate in a Zn rich condition. (a) An n-type ZnO buffer layer is formed on a Zn polarity plane of a substrate. (b) An n-type ZnO layer is formed on the surface of the n-type ZnO buffer layer. (c) An n-type ZnMgO layer is formed on the surface of the n-type ZnO layer. (d) A ZnO/ZnMgO quantum well layer is formed on the surface of the n-type ZnMgO layer, by alternately laminating a ZnO layer and a ZnMgO layer.@(e) A p-type ZnMgO layer is formed on the surface of the ZnO/ZnMgO quantum well layer. (f) A p-type ZnO layer is formed on the surface of the p-type ZnMgO layer.@(g) An electrode is formed on the n-type ZnO layer and p-type ZnO layer. The n-type ZnO layer is formed under a Zn rich condition at the step (b).

Manufacture method for ZnO based semiconductor crystal and light emitting device using same

A ZnO-containing semiconductor layer contains Se or S added to ZnO and has an emission peak wavelength of ultraviolet light and an emission peak wavelength of visual light. By combining the ZnO-containing semiconductor layer with phosphor or semiconductor which is excited by the emitted ultraviolet light and emits visual light, visual light at various wavelengths can be emitted.

Growing community of inventors

Tokyo, Japan

Akio Ogawa