Bridgestone Tire Company Limited

Bridgestone Corporation

Fujitsu Corporation

Asahi Yukizai Kogyo Co., Ltd.

Takashi Ohashi

Toshio Yukuta

Katsuhiko Arai

Toru Okuyama

Minoru Kojima

Akira Suzuki

Hiroya Fukuda

Masumi Saito

Yoshiko Taniguchi

Takumi Ishiwaka

Ryozo Sakata

Masako Yoshida

Seiji Ishii

Hiroshi Kaneda

Eiji Sawa

Tokuo Okada

Akihiro Maruyama

Takatsugu Hashimoto

Osamu Kondo

Yoshinori Egashira

Masami Aoki

Takashi Kitamura

Keiichiro Tabata

Hajime Hasegawa

Michiyuki Yamaguchi

Hiroshi Ohta

Munehiko Kato

Kazuo Haga

Shosuke Suzuki

Takeo Yokobori

Toru Taniguchi

Kazuo Tamemoto

Hitoshi Yaguchi

Takao Moki

Kouichi Iwami

Hiroshi Yoshsii

Kazuyuki Koshida

Takao Aoki

Toru Okoyama

Hideki Sugihara

Masato Matsumoto

Masashi Dobashi

Katsuto Seki

Hirobumi Ohwada

Hisashi Usui

Masafumi Dobashi

Masahiro Kinoshita

Masayuki Ako

Yukio Andoh

Shigetoshi Awano

Susumu Moriya

Masayuki Harada

Syuji Okumura

Kazuhumi Yokoyama

Nozomu Nishiguchi

Masayuki Akou

A radio communication device includes: a receiver configured to receive first and second compressed data strings obtained by compressing, in a control device, a first data string as an object of radio transmission via a first antenna and a second data string as an object of radio transmission via a second antenna different from the first antenna; and a processor configured to process the first and second compressed data strings, wherein the processor: decompresses the first and second compressed data strings and restores the first and second data strings; measures a first decompression time taken for decompressing the first compressed data string and a second decompression time taken for decompressing the second compressed data string; and synchronizes radio transmission timings of restored first and second data strings based on a difference between the first decompression time and the second decompression time.

Radio communication device and timing control method

In a distortion compensation apparatus, a monitor unit monitors a power value of a transmission baseband signal. An update control unit does not allow an updating unit to execute update processing when the power value monitored by the monitor unit is lower than a first threshold, and causes the updating unit to execute the update processing when higher than the first threshold. That is, the update control unit controls execution/non-execution of the update processing by the updating unit based on the monitored power value.

Distortion compensation method, distortion compensation apparatus, and non-transitory computer readable storage medium

A first apparatus at a first base station changes directivity of a first antenna connected in a direction of a cell of a second base station adjacent to the first base station, where directivity of some antennas of a second apparatus at the second base station is changed to a cell of the first base station and some radio resources are assigned to wireless communication with the first apparatus. The first apparatus receives a signal of a first frequency from the second apparatus via the first antenna, converts the received signal into a signal of a second frequency, demodulates the signal of the second frequency, corrects a delay of the demodulated signal caused by propagation of a radio wave and frequency conversion, and modulates the corrected signal to a signal of a third frequency which is transmitted to a cell of the first base station via a second antenna.

Apparatus and method for providing a relayed wireless communication path between cells

A wireless base station includes: a wireless apparatus; and a wireless controlling apparatus, the wireless controlling apparatus including: an embedding processor for embedding a control signal, which is to control a wireless device connected to the wireless apparatus, in a control and management information area in a specific frame, the specific frame being regularly assigned to each frame group including a predetermined number of frames of a plurality of frames included in a transmission frame transmitted via the transmission link; and a first transmitter for transmitting the transmission frame to the wireless apparatus via the transmission link, the wireless apparatus including: an extractor for extracting the control signal from the specific frame in the transmitted transmission frame; and a second transmitter for transmitting the extracted control signal to the wireless device.

Wireless base station, wireless apparatus, wireless controlling apparatus, and communication method

A method for producing a polyolefin foam sheet which includes heating a foamable base sheet comprising a polyolefin resin, a foaming agent, and a resin varnish. The resin of the varnish is selected from the group consisting of rosin, cumarone-indene resin, phenolic resin, alkyd resin, and shellac resin.

Method for producing polyolefin foam sheet

Foamable phenolic resin composition and process for preparation thereof

A method producing a low-density flexible polyurethane foam comprising stirring a starting mixture containing a polyhydroxy compound, a polyisocyanate, a foaming agent and a catalyst to thereby foam the mixture, in which a foaming agent selected from the group consisting of water, formic acid and its salts is used in an amount of at least 10% by weight as water equivalent per 100 parts by weight of the polyhydroxy compound, and the mixture is stirred at 15.degree. C. or below by previously adjusting the temperature of the mixture to 15.degree. C. or below and under a highly catalytic activity.

Method for producing a low-density flexible polyurethane foam

An improved process for producing a flexible polyurethane foam having improved flame retardance and physical properties by reacting a polyhydroxy compound and a polyisocyanate compound in the presence of a blowing agent, wherein the improvement comprises using as the polyhydroxy compound one in which an aldehyde condensation polymer has been formed by polycondensation and dispersed such that it accounts for preferably from 5 to 30 wt % of the total amount of the polyhydroxy compound, and adding as the flame retardant a melamine powder preferably in an amount of from 5 to 100 parts by weight for 100 parts by weight of said polyhydroxy compound.

Process for producing flexible polyurethane foam

An electrically conductive flexible polyurethane foam having fine and homogeneous cells, being low in swelling by water and superior in dimensional stability can be prepared by mixing an isocyanate terminated urethane prepolymer holding isocyanate monomers therein prepared by reacting polyether polyol(s) holding poly(oxypropylene) chains and not more than 30 weight % of poly(oxyethylene) chains therein with a stoichiometrically excessive amount of an isocyanate component with an aqueous dispersion of electrically conductive carbon particles containing water in excess of the stoichiometric amount necessary to react with the isocyanate monomers in the urethane prepolymer and foaming the mixture in a closed mold having a capacity smaller than the volume of a foam which can be obtained by conducting the foaming of the said mixture of the urethane prepolymer and the aqueous dispersion of electrically conductive carbon particles freely under atmospheric pressure.

Method of making an electrically conductive polyurethane foam

In a method for producing resol type phenol resin foams by using starting material for the foams prepared by blending a resol type phenol resin, a blowing agent and a catalyst, a low molecular weight resol type phenol resin with the number average molecular weight of less than 200 and a high molecular weight resol type phenol resin with the number average molecular weight of greater than 200 are mixed at a weight ratio of from 5/95 to 80/20 and used as the resol type phenol resin. The resol type phenol resin foams are excellent in adhesion, fire-proofness capable of foaming cure in a short time and useful for sprayed-in-place foaming, etc. The phenol resin foams produced by the invention are capable of integral foaming with rigid urethane resin foam layer into foamed laminates of excellent thermal insulation, fire-proofness, etc.

Method for producing phenol resin foams and method of making foamed

A method of making a foam product including the steps of reacting an isocyanate component with a polyol component and foaming with a foaming agent to form a self-supporting intermediate foam material. The isocyanate component is present in excess of a stoichiometric quantity needed to react with the polyol component. The self-supporting intermediate foam material is then contacted with water and the self-supporting, intermediate foam material is heated to form a foam product, the water reacting with the remaining unreacted isocyanate component. The self-supporting, intermediate foam material formed by the first foaming step is rigid or semi-rigid at room temperature but it can be softened by heating to enable it to be used for deep draw molding in a successive cure molding process without cracking, splitting or being destroyed. Once the self-supporting, intermediate foam material is contacted with water or steam in the final cure molding process to react the remaining isocyanate component, the material becomes a finally cured, rigid or semi-rigid foam material which will not soften on heating. The self-supporting, intermediate foam material can be laminated with facing materials or reinforced with glass fiber--non-woven cloth or the like to give a composite panel which exhibits stiffness, heat insulation, acoustic insulation, moisture resistance and is light in weight so that it can be used for a molded ceiling or door panel in an automobile or a partition or screen for interior use.

Method of making a composite panel of a foam material

There is provided a platen roll low in generation of noise with keeping superior printability which comprises a shaft and a single layer of rubber composition concentrically and tightly applied around said shaft or two layers of an inner layer of a resin concentrically and tightly applied around said shaft and an outer layer of a rubber composition concentrically and tightly applied around said inner layer.

Platen roll

A laminated product for use as motorcar seats, carpets, blankets, sofas, chair seats and the like, excellent in continuation of antistatic effect, characterized in that polyurethane foam having antistatic effect is laminated on the back side of a skin material to add antistatic capacity to the surface of the skin material without losing the comfortable feeling thereof.

Laminated product

A method of manufacturing molded products (or foamed and molded asphalt/urethane foam products) most suitable for sound-proof, vibration control and sealing members which are applied to the floor panel, dashboard and the like in a car, for example, and more particularly, a method of manufacturing foamed and molded asphalt/urethane products comprising introducing polyalkylene polyol having at least two or more hydroxyls in a molecule and polyisocyanate having two or more isocyanate radicals into a mold together with a catalyst and a foaming agent, and reacting them in it, wherein said polyalkylene polyol includes asphalt previously emulsified and dispersed therein; and a laminated structure including a layer of foamed asphalt/urethane foam made according to the method.

Method of manufacturing molded products and laminated structure

An electroconductive article is disclosed, which comprises a polar group-containing high polymeric substrate, and an electroconductive layer of cupric sulfide formed therein and is produced by immersing the polar group-containing high polymeric substrate in an aqueous solution containing a bivalent copper compound and a reducing agent or an aqueous solution containing a monovalent copper compound, and at the same time or subsequently treating it in a solution of a sulfur releasable substance.

Electroconductive articles and a method of producing the same

Growing community of inventors

Iruma, Japan

Takashi Ohashi