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Akira Sogawa, Kiyoshi Inokuchi, Keizo Sugimachi, Hidenobu Kai, Tetsuya Hotta, Yoshio Kawai: Endotract antenna device for hyperthermia. Kureha Kagaku Kogyo Kabushiki Kaisha, Oblon Fisher Spivak McClelland & Maier, May 5, 1987: US04662383 (262 worldwide citation)

An endotract antenna used for hyperthermia treatments. A microwave radiation antenna is surrounded by a balloon-like member made of a thin polymeric film. Tubes for feeding and draining a cooling liquid to and from the inside of the balloon-like member enable the device to effectively warm an endotr ...


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Atsushi Tomonaga, Hideki Aoki: Composite implant materials and process for preparing same. Kureha Kagaku Kogyo Kabushiki Kaisha, Murray and Whisenhunt, September 16, 1980: US04222128 (122 worldwide citation)

Disclosed is a composite implant material comprising a sintered apatite material and a thermoplastic or thermosetting resin. Said composite material is prepared by forming a sintered apatite material and filling or impregnating a thermoplastic or thermosetting resin into the pores or holes of the si ...


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Teruo Sakagami, Katsuichi Machida, Yasufumi Fujii, Noriyuki Arakawa, Naohiro Murayama: Photochromic lens. Kureha Kagaku Kogyo Kabushiki Kaisha, Robert F Ziems, July 12, 1988: US04756973 (96 worldwide citation)

A photochromic lens is composed of a lens member made of a lens resin; and a photochromic layer applied on at least one side of the lens member and formed of a resin of a three-dimensional network structure. The layer-forming resin contains a spirooxazine compound represented by the following genera ...


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Yo Iizuka, Takao Iwasaki, Takayuki Katto, Zenya Shiiki: Process for production of high to ultra-high molecular weight linear polyarylenesulfides. Kureha Kagaku Kogyo Kabushiki Kaisha, Wenderoth Lind & Ponack, February 24, 1987: US04645826 (87 worldwide citation)

By maintaining an arylenesulfide prepolymer with a melt viscosity of 5 to 3,000 poise at a temperature of 245.degree. to 290.degree. C. under a liquid-liquid two-phase separated state in a solvent for 1 to 50 hours, the molecular weight of said prepolymer is increased to a high to ultra-high value w ...


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Seiichi Suzuki, Eihachiro Tomita: Capacitor discharge circuit. Kureha Kagaku Kogyo Kabushiki Kaisha, Radio Research Technical, Woodcock Washburn Kurtz Mackiewicz & Norris, March 12, 1985: US04504773 (79 worldwide citation)

A capacitor discharge circuit constructed by a combination of a mechanical switch and an electronic switch. The electronic switch is automatically turned on with a predetermined time delay after closing of the mechanical switch. The mechanical switch is used to completely separate a high voltage-lar ...


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Toshiharu Shirakami, Akira Sogawa: Medical electrode device. Kureha Kagaku Kogyo Kabushiki Kaisha, Oblon Spivak McClelland Maier & Neustadt, December 19, 1989: US04887614 (77 worldwide citation)

A medical electrode device comprises a flexible bag-like member which is formed on the side in direct contact with a living body and to and from which is charged and discharged a cooling medium, and a flexible electrode secured to the bag-like member, wherein an inner surface of the flexible bag-lik ...


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Masafumi Yoshida, Masahiro Segawa, Hiroshi Obara: Piezoelectric key board switch. Kureha Kagaku Kogyo Kabushiki Kaisha, Sughrue Rothwell Mion Zinn & Macpeak, January 27, 1976: US03935485 (70 worldwide citation)

A key board switch comprising a multi-piezoelectric polymer film element A having, in the surface of the polymer film, a plurality of piezoelectric unit elements satisfying the following criteria: (a) the unit elements have electrodes on both surfaces thereof, (b) the portions of the polymer film of ...


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Shoji Uchikawa: Piezoelectric-type electroacoustic transducer. Kureha Kagaku Kogyo Kabushiki Kaisha, Sughrue Rothwell Mion Zinn & Macpeak, March 30, 1976: US03947644 (68 worldwide citation)

A piezoelectric-type electroacoustic transducer composed of two convex or concave piezoelectric polymer films each having electrodes on both surfaces thereof, said two polymer films being so connected to electric wiring that, when the one of the piezoelectric polymer films elongates by the action of ...


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Murayama Naohiro, Okiawa Takao: Acoustic transducer using a piezoelectric polyvinylidene fluoride resin film as the oscillator. Kureha Kagaku Kogyo Kabushiki Kaisha, Sughrue Rothwell Mion Zinn & Macpeak, February 12, 1974: US3792204 (68 worldwide citation)

An electrostatic type, electroacoustic transducer having excellent acoustic characteristics is composed of an piezoelectric film of a polyvinylidene fluorine resin having an electroconductive material on the opposite surfaces of the film.