Kuraray Co., Ltd.

Adv Antest Corporation

Mitsubishi Denki Kabushiki Kaisha

Daicel Chemical Industries, Ltd.

Tohoku University

Sharp Corporation

Takasago International Corporation

Mitsuo Matsumoto

Masuhiko Tamura

Noriaki Yoshimura

Shigeru Sasaki

Teruhisa Kaneda

Shinya Sato

Tadahiro Ohmi

Hiroyuki Hama

Yuichiro Yamada

Tokihiko Shinomiya

Toshiaki Sato

Masakatsu Suda

Yasuyuki Shirai

Takuji Okaya

Koji Hirai

Hidetaka Kojima

Masayuki Kawabata

Yasuhiro Takeda

Yasuhiro Maeda

Takayuki Okamura

Takanori Kitamura

Kunio Koga

Ikuo Onishi

Takashi Ishizumi

Tsugunori Kashimura

Tokuo Ikari

Hirohide Aoki

Masaki Okazaki

Kiwamu Takehisa

Fumio Sanda

Etsuo Nakazato

Kiyoto Ohtsuka

Shuhei Ishino

Koichi Sato

Shigeru Yamashita

Koichi Kikuchi

Shinichi Miura

Gerald Lewis Katz

Makiko Fujii

Minuro Hanada

Yuhsaku Ajichi

Provided is a measurement apparatus including a signal source configured to output a binary digital signal configuring a multi-tone waveform, a waveform acquisition unit configured to acquire an analog signal waveform generated in response to application of the digital signal to a device under test, and a computation unit configured to calculate a frequency characteristic of the device under test from the waveform acquired by the waveform acquisition unit, in which the signal source is configured to repeatedly output a signal upconverted by multiplying a pseudo-random binary sequence (PRBS) signal by a repeating rectangular wave with a reference frequency and a reference duty ratio.

Measurement apparatus, measurement method and computer readable medium

In a semiconductor test apparatus, a voltage source generates a power supply voltage to be supplied to a DUT. A decision processor makes the DUT execute a predetermined test sequence. A noise generator superimposes a periodic pulse-like noise voltage on the power supply voltage to be supplied to the DUT, while the test sequence is being executed. The noise generator superimposes a noise voltage synchronized with a clock signal to be supplied to the DUT.

Semiconductor test apparatus and test method

A large liquid crystal display () comprises a light guide plate () arranged on the back side of a liquid crystal panel (). The front surface of the light guide plate () is flat, while the back surface thereof is concave. The upper and lower end faces of the light guide plate () respectively facing hot cathode fluorescent lamps () have a convex shape projecting toward the respective lamps. White light from the fluorescent lamps is incident on the upper and lower end faces of the light guide plate directly or by being reflected by reflectors (), and propagates within the light guide plate while being reflected by the front and back surfaces of the light guide plate. At the front surface of the light guide plate, a part of the white light is directed toward the back side of the liquid crystal panel () by a light guide portion ().

Liquid crystal display and light guide plate

This invention discloses a method and system to search for a critical path which allows a quick and reliable search for a critical path by using an actual semiconductor device. When the number of the operating clock pulses between the input of a predetermined data to a semiconductor device and the output of the corresponding data is n pulses, each period of the n pulses is changed from a failing period T1 to a passing period T2 in order to search for a critical path.

Method and system to search for critical path

A gas insulated switching device including a series of pressure containers and mutually connected, in which a conductor is positioned in an inside center, and an insulating and arc-extinguishing gas is filled in a space around the conductor , and a current transformer fabricated by Rogowskii coils for detecting a current passing through the conductor , the current transformer is attached to flanges of the pressure containers and via a metallic adaptor , wherein the current transformer is accommodated in a groove formed toward an inside of the metallic adaptor and uses the metallic adaptor to obtain an earth potential, whereby the gas insulated switching device having the current transformer with high accuracy can be miniaturized.

Gas insulated switching device

A dermal absorption-promoting agent comprising p-methane-3,8-diol and 1,3-butylene glycol as well as a topical formulation containing the same; and a dermal absorption-promoting agent further comprising 1,3-butylene glycol, as well as a topical formulation containing such dermal absorption-promoting agents.

Dermal absorption-promoting agent

Provided are novel thermotropic liquid crystal polyesters consisting essentially of the following structural units (1), (2) and (3) or those (2), (3), (4) and (5) and shaped articles comprising these polyesters. Also provided are packaging materials and containers comprising the above thermotropic liquid crystal polyesters or a polyester consisting essentially of the following structural units (2), (3), (5) and (6). ##STR1## wherein Ar represents a 1,4-phenylene group or 2,6-naphthylene group ##STR2##

Thermotropic liquid crystal polyester

Disposable moldings comprising a polymer (A) having a repeating structure unit in the main chain represented by the formula (I) ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are respectively a hydrogen atom or a lower alkyl, and a polymer composition comprising the polymer (A). The moldings of the present invention disintegrate themselves due to decomposition of the polymer (A) in atmosphere, soil or water and do not cause any environmental pollution.

Disposable moldings and polymer compositions for their production

This invention relates to a method for electric field orientation of liquid crystal polymers and oriented materials of liquid crystal polymers obtained by the method. This electric field orientation method comprises applying a pulsating electric field which is predominantly unidirectional and whose magnitude is varying periodically or non-periodically to a liquid crystal polymer capable of forming an optically anisotropic melt phase. The oriented material of liquid crystal polymer thus obtained has been unidirectionally oriented and polarized. This oriented, polarized material of liquid crystal polymer can be utilized as a piezoelectric material, pyroelectric material, electret material, non-linear optical element or the like.

Method for electric field orientation of liquid crystal polymers and

Provided are novel polycarbonate or polyestercarbonate resins having excellent performances including excellent transparency and thermal resistance, very small warping or deformation caused by water absorption, and the like.

Polycarbonate or polyestercarbonate resin from bicyclol polycyclo

A novel wholly aromatic thermotropic liquid crystal polyester consisting essentially of 4-oxybenzoyl unit, terephthaloyl unit, 4,4'-dioxydiphenyl unit and 4,4'-dioxydiphenyl ether unit has a relatively low transition temperature to liquid crystal as well as good flow characteristics, and has thereby good melt-formability. The polyester gives melt extruded fibers and melt extruded films having superior mechanical strengths and elastic moduli, and also gives injection-molded products having superior strengths, excellent thermal characteristics, elastic moduli and impact strengths.

Wholly aromatic thermotropic liquid crystal polyester

A molded product prepared by injection molding a wholly aromatic thermotropic liquid crystal polyester consisting of 4-oxybenzoil moiety, terephthaloyl moiety and 4,4'-dioxydiphenyl ether moiety is characterized in high impact strength, small mechanical anisotropy and excellent resistance to heat. The thermotropic liquid crystal polyester gives, by blending therewith a known thermotropic liquid crystal polyester, a composition which can yield a formed product having a superior strength and a relatively small elastic modulus.

Wholly aromatic polyester

Allyl alcohol is hydroformylated with a gaseous mixture of hydrogen and carbon monoxide, in an aromatic hydrocarbon, in the presence of a rhodium complex and a trisubstituted phosphine, to form hydroxybutyraldehydes which are separated from the reaction mixture within an aqueous medium. The carbon monoxide partial pressure, the rate of consumption of carbon monoxide, the rate at which the carbon monoxide is dissolved in the reaction mixture, reaction temperature and the viscosity of the reaction mixture are selected and controlled in an interrelated way to give a high yield of 4-hydroxybutyraldehyde and reduced catalyst consumption.

Process for continuous hydroformylation of allyl alcohol

A novel process for production of polyurethane having excellent hydrolysis resistance, heat resistance, low-temperature characteristics and no tendency of crystallization and capability of making high solid content solution, which is obtained from a polymerized polyol having two or more hydroxy groups in the molecule and a polyisocyanate, and optionally a chain extender, characterized in that the polymerized polyol component is a polymerized polyol having ##STR1## groups in the molecule.

Process for production of polyurethane

A process for producing 1,9-nonanedial which comprises hydroformylating 7-octen-1-al with a mixture of hydrogen and carbon monoxide in an aqueous sulfolane or 1,4-butanediol solution in the presence of a rhodium complex and the sodium, potassium or lithium salt of m-(diphenylphosphino)benzenesulfonic acid, extracting 1,9-nonanedial from the reaction mixture with a primary alcohol or a mixture of a primary alcohol and a saturated aliphatic hydrocarbon, and recycling the extraction residue containing the catalyst components to the 7-octen-1-al hydroformylation step.

Process for producing 1,9-nonanedial

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Kurashiki, Japan

Mitsuo Matsumoto