Bridgestone Corporation

Nec Corporation

Mochida Pharmaceutical Co., Ltd.

Toppan Printing Co., Ltd.

Japan Synthetic Rubber Co., Ltd.

Masayuki Ohashi

Hidemitsu Nishida

Toshiyuki Shudo

Eiji Nakamura

Akira Kikuchi

Tomohiro Kusano

Kazumi Nishijima

Kazutoshi Yanagibashi

Hiroshi Suzuki

Hiroshi Yamada

Tadashi Shibata

Noboru Oshima

Tatsuo Fujimaki

Mitsuhiko Sakakibara

Fumio Tsutsumi

Shinichi Iwasaki

Akihiko Morikawa

Ryuji Izumoto

Tatsuro Hamada

Hikaru Tansei

Masanobu Yoshinaga

Yasuyoshi Kawaguchi

Noboru Sasaki

Naohiro Sasaka

Kentaro Fujino

Teruo Miura

Tsunenori Komori

Koshiro Monji

Shinichiro Tanizaki

Tatsuto Notso

Tatsuto Notsu

There is provided a rubber composition for a tread obtained by compounding (a) 5-40 parts by mass of a softening agent including an oil in which an extraction quantity with dimethylsulfoxide (DMSO) by IP346 process is controlled to less than 3% by mass and (b) 5-40 parts by mass of a liquid polymer having a viscosity average molecular weight of 45,000-100,000 based on 100 parts by mass of a rubber component, and considerably improving the fracture properties and wear resistance and controlling the lowering of the modulus of elasticity as compared with the case of compounding the conventional high aromatic oil.

Rubber composition for tread and tire

A laminated material having, on a substrate, a structure in which a gas-barrier intermediate layer formed by coating with a coating agent containing a water-soluble polymer is interposed between two thin deposition layers.

Laminated body

Novel fused tetracyclic heterocyclic compounds having a potent and highly selective effect of inhibiting cyclic GMP phosphodiesterase (cGMP-PDE) and a high safety; a process for producing the same; drugs characterized by containing at least one of these compounds as the active ingredient, in particular, preventives and/or remedies for pulmonary hypertension, ischemic heart diseases, erectile insufficiency, female sexual dysfunction or diseases against which cGMP-PDE inhibitory effects are efficacious and intermediates useful in producing the above compounds.

Compounds having cGMP-PDE inhibitory effect

A semiconductor integrated circuit having a plurality of input first stage circuits, each performing a comparison of an individual input signal level to a reference voltage level, wherein a plurality of different reference voltage lines having different reference voltage levels are provided to allow selection of any one of the different reference voltage levels for each of the input first stage circuits.

Reference type input first stage circuit in a semiconductor integrated circuit

The invention relates to novel pyridocarbazole derivatives having highly selective action in inhibiting cyclic GMP-phosphodiesterase (hereinafter abbreviated as cGMP-PDE), processes for producing such derivatives, agents containing at least one of such derivatives as an active ingredient for preventing and/or treating pulmonary hypertension, ischemic heart diseases or diseases against which the cGMP-PDE inhibitory action is effective, and intermediates useful for the production of pyridocarbazole derivatives.

Pyridocarbazole derivatives having cgmp-pde inhibitory activity

A semiconductor integrated circuit device is responsive to a potential level applied to a signal pad connected to a mode changer, and the mode changer causes a mode selector to change a control signal between a first level indicative of a certain combination of sub-circuits of a main circuit selected before separation of the semiconductor chip from a master slice and a second level indicative of another combination of the sub-circuits not selected by a customer; when the manufacturer evaluates the semiconductor integrated circuit device, the manufacturer changes the potential level at the signal pad, and carries out a test for the certain combination and another combination; when the semiconductor chip is sealed in a package, the signal pad is electrically isolated from a source of potential level, and the control signal is fixed to the first level.

Semiconductor integrated circuit device produced from master slice and

A pneumatic tire comprising a tread which contacts a road surface and comprises a rubber composition which contains a rubber component composed of 70% by weight or more of a copolymer of a conjugated diene and a vinyl aromatic hydrocarbon and a remaining amount of another synthetic rubber and/or natural rubber, at least one reinforcing filler selected from a group consisting of carbon black and silica, and at least one type of vulcanization accelerator, such as bis(4-methylbenzothiazolyl-2)-disulfide, bis(5-methylbenzothiazolyl-2)-dis ulfide, mercapto-4-methylbenzothiazole, and mercapto-5-methylbenzothiazole, an amount of the reinforcing filler being 45 to 120 parts by weight and an amount of the vulcanization accelerator being 0.5 to 5.0 parts by weight per 100 parts by weight of the rubber component. Decrease in chipping resistance during tire use is suppressed, and both abrasion resistance and controllability on wet roads after use of the tire are improved.

Pneumatic tire including cap layer and base layer

Pyridocarbazole derivatives having cGMP-PDE inhibitory activity

An N-input transistor logic circuit includes two or four series-connected transistor arrays connected between two power lines. The gates of the transistors are connected to the N inputs to account for varying parasitic input capacitances, and equalizes the resulting time delays between the N-inputs and the logical unit output. Specifically, in each of the arrays each of the transistors is connected to one of the N inputs, and is separated from a first power line by X other transistors in the respective array. For each of the input terminals, the sum of X for all the arrays is a constant, namely, 2N-2 for four arrays and N-1 for two arrays.

Logical circuit capable of uniformizing output delays for different

A fiber composite material in which short fibers, such as polyester short fibers, are added to a matrix, such as a cross-linked rubber matrix, is provided, wherein a heat shrinkage ratio of the short fibers is 8% or less at fiber composite material molding temperatures of 140 to 200.degree. C. Also provided is a pneumatic tire in whose tire tread the fiber composite material is used. Such pneumatic tires include pneumatic tires provided with a foamed rubber layer in a tire tread. The foamed rubber layer has an average cell diameter of 10 to 120 .mu.m and an expansion ratio of 3 to 50%. A solid phase rubber portion of the foamed rubber layer includes 5 to 55 parts by weight of carbon black, 55 to 5 parts by weight of silica, and 1 to 15 parts by weight of short fibers to 100 parts by weight of a diene-base rubber component including 70 to 20 parts by weight of natural rubber and 30 to 80 parts by weight of polybutadiene rubber. A surface of the tire tread has a hardness of 52 or less at 0.degree. C. The short fibers have a length which is from 0.5 to 3 mm and which is shorter than a minimum gap between sipes of a tire surface, a diameter of 30 to 100 .mu.m, an aspect ratio of 5 to 100, and a heat shrinkage ratio of 8% or less at 140 to 200.degree. C. On-ice performance of the pneumatic tire of the present invention is excellent.

Pneumatic tire using fiber composite material

A rubber composition for use in a tire tread comprises particular amounts of carbon black, silica, silane coupling agent and softening agent in addition to the specified diene rubber as a rubber ingredient and has specified storage modulus ratio after vulcanization and hystresis loss at 150% strain and provides pneumatic tires capable of stably developing the steering stability under wide-range service conditions of from low temperature to high temperature and from wet road surface to dry road surface.

Rubber compositions for use in tire tread

An output buffer circuit comprises a pair of first and second output MOS transistors coupled between a power supply line and a ground line; a booster circuit for boosting the power supply voltage up to a predetermined high voltage higher than a power supply voltage; a complementary MOS circuit comprising a pair of n-channel and p-channel MOS transistors connected in series between an output side of the booster circuit and the ground line; and a level shifter circuit having a first terminal coupled to an output side of a first logic gate for receiving logic signals from the first logic gate, a second terminal coupled to the gates of the n-channel and p-channel MOS transistors of the complementary MOS circuit and a third terminal coupled to the output side of the booster circuit for receiving the predetermined high voltage from the booster circuit, the level shifter circuit performing to shift the logic signal of the logic gate up to at least almost the same level as the predetermined high voltage to supply a shifted up signal to the gates of the n-channel and p-channel MOS transistors of the complementary MOS circuit.

Output buffer circuits

A rubber composition contains 100 parts by weight of natural rubber and/or a diene type synthetic rubber and 20-70 parts by weight of carbon black having the following characteristics:

Rubber composition

A rubber composition including 100 parts by weight of natural rubber and/or diene synthetic rubber and 30-100 parts by weight of carbon black having the following characteristics:

A tread rubber composition for heavy duty pneumatic tire comprises a particular amount of a particular carbon black satisfying CTAB of 130-160 m.sup.2 /g, DBP of 90-120 m/100 g and Dm of not more than 210 .ANG., based on 100 parts by weight of at least one rubber component.

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Tokyo, Japan

Masayuki Ohashi