Sankyo Company, Limited

Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corpotation

Sankko Company, Limited

Takeshi Oshima

Naofumi Yoneda

Norio Nakamura

Yasuteru Iijima

Akimichi Hirota

Nobuyuki Ohkawa

Masaaki Miyamoto

Takeshi Yuasa

Keiichi Matsuda

Hiroyuki Koike

Hidenori Yukawa

Jun Nishihara

Kouhei Furuya

Hiroyuki Nonomura

Mitsuo Sugiyama

Motomi Watanabe

Yoshiya Amemiya

Hideyuki Haruyama

Hiromasa Nakajima

Aiya Sato

Michihiro Sugano

Tadashi Hata

Harumitsu Kuwano

Tomohiro Takahashi

Takeshi Yamaguchi

Takuma Nishimura

Kazuo Koyama

Koichi Kojima

Atsusuke Terada

Yasuhiro Morisawa

Mitsuru Kataoka

Isao Kawamoto

Shigeru Ushiyama

Toshiaki Sakamoto

Fumitoshi Asai

Shinji Arai

Yu Ushijima

Nobuyoshi Iwata

Hiroshi Fukumi

Hiroshi Itakura

Fujio Saito

Rokuro Endo

Kozo Kurihara

Shigeo Amemiya

Hiromitsu Uchida

Yasushi Itoh

Hiroyuki Aoyama

Hironobu Saito

Yasuo Simoji

Hitoshi Nagahori

Atsusuke Trada

Yukie Misho

The microwave power is distributed to microwave radiation elements arranged rotationally symmetrically around a reference line on a plane on a top face side of a heating chamber by advancing a feeding phase with a phase difference of 360°/2N clockwise or counterclockwise in turn.

Heating device

A waveguide unit () is closed at one end thereof by a short circuit plane () provided with through holes (-to-). Radio wave absorbers (-to-) absorb a frequency signal being a non-reflective target in the state of being inserted through the through holes (-to-) toward the inside of the waveguide unit () and contacting inner surfaces ('-to&#x2032;-) of the through holes (-to-).

Waveguide non-reflective terminator and waveguide circuit

A hollow-waveguide-to-planar-waveguide transition circuit includes: strip conductors formed on a first main surface of a dielectric substrate; a ground conductor formed on the back side, facing the strip conductors; a slot formed in the ground conductor; and a coupling conductor formed at a position to be electrically coupled with the strip conductors. The coupling conductor has: a main body portion electrically coupled with the strip conductors; and protruding portions protruding from the main body portion. The protruding portions are formed so as to face an end portion of the slot.

Hollow-waveguide-to-planar-waveguide transition circuit comprising a coupling conductor disposed over slots in a ground conductor

A coaxial-waveguide-to-hollow-waveguide transition circuit () includes a hollow waveguide (), a coaxial waveguide () having an end coupled to a wide wall () of the hollow waveguide (), and a strip conductor () located inside the internal path () of the hollow waveguide (). The coaxial waveguide () includes a conducting core wire () extending into the internal path () of the hollow waveguide (). The strip conductor () is located so as to make a short-circuit connection between the conducting core wire () of the coaxial waveguide () and a termination surface () of the hollow waveguide ().

Coaxial-waveguide-to-hollow- waveguide transition circuit

A hollow-waveguide-to-planar-waveguide transition circuit includes: a dielectric substrate; strip conductors formed on a first main surface of the dielectric substrate; a ground conductor formed on a second main surface of the dielectric substrate, facing the strip conductors in the thickness direction; a slot formed in the ground conductor; a coupling conductor formed at a position to be electrically coupled with the strip conductors on the first main surface; and branch conductor lines formed on the first main surface. Each of the branch conductor lines includes a base portion branching from the coupling conductor and a tip portion that is electrically open.

Hollow-waveguide-to-planar-waveguide transition including a coupling conductor having one or more conductors branching therefrom

The multiband filter includes a printed circuit board, a first filter, a second filter having an outer dimension different from that of the first filter and passband frequencies higher than those of the first filter, an input terminal, an output terminal, a first inductor, a first capacitor, which are connected except the first capacitor by signal line conductor patterns to form a first transmission line, which connect the second filter, the input terminal, the output terminal, and the first capacitor to form a second transmission line, a part thereof in the first transmission line being arranged in an area on the printed circuit board, formed by the difference between the outer dimensions of the first and the second filters, to achieve desirable passbands and enough attenuation in a suppression band outside the passbands.

Multiband filter

A substrate is used as one tube wall of a hollow waveguide, the substrate including a strip line wired in an inner layer, a first ground surface formed on a front surface, and a second ground surface formed on a part of a back surface. As a result of such a configuration, a waveguide strip line transducer having the same dimension as the external dimension of the hollow waveguide can be obtained.

Waveguide to strip line transducer including a waveguide wall forming substrate having an end surface bonded to a second conductor, and a power feed circuit formed therefrom

A waveguide circuit () includes a first waveguide tube (), a second waveguide tube (), and a third waveguide tube (). The first waveguide tube (), the second waveguide tube (), and the third waveguide tube () have cross-sectional shapes to allow propagation of TE modes. The tube axis of the second waveguide tube () is parallel to the tube axis of the first waveguide tube (). One of the narrow sidewalls of the second waveguide tube () faces a narrow sidewall () of the first waveguide tube (). The third waveguide tube () includes a coupler that connects a hollow guide of the third waveguide tube () to a hollow guide of the first waveguide tube () and a hollow guide of the second waveguide tube ().

Waveguide circuit

Disclosed is an inter-board connection structure including a signal line conductor () provided in an outer layer of a printed circuit board (), a signal line conductor () extending in a direction from the signal line conductor () to a signal pad (), and forming a capacitive component between itself and a signal pad (), and a signal line conductor () branching and extending from a connecting portion between the signal line conductor () and the signal line conductor (), and electrically connected to the signal pad ().

Inter-board connection structure

A dual-frequency matching circuit of the present invention comprises an output terminal to which a load is connected, an input terminal through which an input signal is input to the load, a series resonance circuit, which is composed of a series capacitor and a series inductor connected in series to the series capacitor and disposed in such a manner that it is connected in series to the load when observed from the input terminal side, and a parallel resonance circuit, which is composed of a parallel capacitor and a parallel inductor connected in parallel to the parallel capacitor, and disposed in such a manner that it is connected in parallel to the entire portion of the load and the series resonance circuit when observed from the input terminal side. By this configuration, the problem contained in the conventional matching circuit that the matching of impedance at two arbitrary different frequencies is not made possible can be solved, and that since no transmission line is needed therein, the circuit can be minimized as a whole when frequency at which the matching operation is performed is set to a low frequency band.

Dual-frequency matching circuit

A method of treating a PAF-mediated pathology or for treating or preventing psoriasis, nephritis, asthma, inflammation or shock by administering an effective amount of a PAF antagonist of the formula ##STR1## wherein R.sup.1 and R.sup.2 are each --R.sup.5, --CH.dbd.CH--R.sup.5 or --C.tbd.C--R.sup.5 ; R.sup.5 is an unsubstituted or substituted C.sub.6 -C.sub.14 carbocyclic aryl of an aromatic heterocyclic having from 5 to 14 ring atoms, of which from 1 to 5 are hetero-atoms selected from the group consisting of nitrogen, oxygen and sulfur, the heterocyclic group being unsubstituted or substituted; R.sup.3 is hydrogen, a C.sub.1 -C.sub.6 alkyl, cyano, or --R.sup.5 ; X is oxygen or sulfur; A is a 1,4-piperazin-1,4-diyl or a 1,4-homopiperazin-1,4-diyl; B is a C.sub.1 -C.sub.6 alkylene, carbonyl, thiocarbonyl, sulfinyl or sulfonyl; and R.sup.4 is an unsubstituted or substituted phenyl group.

Method of treating a PAF-mediated pathology or for treating or

Compounds of formula (I): ##STR1## wherein R.sup.1 and R.sup.2 is each --R.sup.5, --CH.dbd.CH--R.sup.5 or --C.tbd.C--R.sup.5, wherein R.sup.5 is optionally substituted aryl or aromatic heterocyclic; R.sup.3 is hydrogen, alkyl, cyano or --R.sup.5 ; X is oxygen or sulfur A is 1,4-piperazin-1,4-diyl or a 1,4-homopiperazin-1,4-diyl; B' is alkylene, carbonyl, thiocarbonyl, sulfinyl or sulfonyl: and R.sup.4 is optionally substituted phenyl and pharmaceutically acceptable salts thereof have valuable PAF antagonist activity.

N-acryloylpiperazine compounds

Thiazolidinecarboxylic acid amides having combined antiallergic and antiasthmatic activities with an antagonist activity against platelet Activating Factor and having the following general formula (I) ##STR1##

Thiazolidinecarboxylic acid amide derivatives and their therapeutic uses

Compounds of formula (I): ##STR1## wherein R.sup.1 and R.sup.2 is each --R.sup.5, --CH.dbd.CH--R.sup.5 or --C.tbd.C--R.sup.5, wherein R.sup.5 is optionally substituted aryl or aromatic heterocyclic; R.sup.3 is hydrogen, alkyl, cyano or --R.sup.5 ; X is oxygen or sulfur; A a 1,4-homopiperazin-1,4-diyl; B' is alkylene, carbonyl, thiocarbonyl, sulfinyl or sulfonyl; and R.sup.4 is optionally substituted phenyl and pharmaceutically acceptable salts thereof have valuable PAF antagonist activity, and may be prepared by reacting a compound containing the homopiperazine part of the molecule with a compound containing the other part of the molecule.

N-acryloylpiperazine derivatives, their preparation and their use of PAF

A series of new compounds, called 'the phomactins' is provided and may be isolated from the culture broth of fungi of the genus Phoma. especially Phomas sp. SANK 11486 (No. FERM BP-2598). These compounds are platelet activating factor antagonists and may be used for the treatment of disorders for which known such agents may also be used.

Platelet activating factor antagonists, named 'the phomactins', their

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Tokyo, Japan

Takeshi Oshima