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81. 发明专利

JPH01183438A PRODUCTION OF SEMICONDUCTOR-MATRIX 失效
公开(公告)号：JPH01183438A
公开(公告)日：1989-07-21
申请号：JP922988
申请日：1988-01-19
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KIMURA TAKAO , SHIBATA SHUICHI , SHIMIZU MAKOTO
IPC分类号： C03C3/06 , C03B8/02 , C03C3/253 , H01L31/0248 , H01L31/08
摘要： PURPOSE:To enable doping of a wide range of semiconductors having small particle diameters and uniform particle diameter distribution in producing the title matrix by sol gel method, by using a solution or dispersion of a semiconductor or a raw material thereof. CONSTITUTION:A solution or dispersion obtained by dissolving or dispersing a semiconductor or a raw material thereof is added to one or more of a metal alkoxide and a partial hydrolyzate.condensate of the metal alkoxide. Then the metal alkoxide or the partial hydrolyzate.condensate of the metal alkoxide is hydrolyzed and condensed to give a semiconductor-matrix. By this method, a matrix doped with a semiconductor having small particle diameter and uniform particle diameter distribution is obtained. Since a semiconductor or a raw material thereof soluble or dispersible in an organic or inorganic solvent is applicable, an extremely wide range of semiconductors can be doped.

82. 发明专利

JPH01183420A PRODUCTION OF GLASS 失效
公开(公告)号：JPH01183420A
公开(公告)日：1989-07-21
申请号：JP519788
申请日：1988-01-13
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SHIBATA SHUICHI , KIMURA TAKAO , OKAZAKI HISAAKI , SHIMIZU MAKOTO , KITAGAWA TAKESHI
IPC分类号： G02F1/35 , C03B8/02 , C03C1/00 , G02F1/355 , G02F1/361
摘要： PURPOSE:To readily obtain transparent glass, useful as a nonlinear optical element and having crystallites, by adding an organic polysilane, organic polygermane or a copolymer of both to a sol solution prepared by hydrolyzing an alkoxide, gelatinizing the sol and drying the resultant gel. CONSTITUTION:For example, an alkoxide, such as silicon tetraethoxide, is added to an alcohol and diluted. Water is then added to hydrolyze the alkoxide and form a sol solution. A silane, such as 50% dimethylsilane expressed by formula I-50% phenylmethylsilane, 90% dimethylsilane expressed by formula II-10% dimethylsiloxane or octaphenylcyclotetraene expressed by formula III, or (co)polymer of a germane (e.g., solid organic polysilane having an optional molecular weight) or both are added and the resultant mixture is kept at, e.g., 50-60 deg.C, gelatinized and slowly dried to afford the aimed transparent glass.

83. 发明专利

JPH01138121A PRODUCTION OF OXIDE 失效
公开(公告)号：JPH01138121A
公开(公告)日：1989-05-31
申请号：JP29395087
申请日：1987-11-24
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SHIBATA SHUICHI , KITAGAWA TAKESHI , OKAZAKI HISAAKI , KIMURA TAKAO
IPC分类号： H01L39/24 , C01G1/00 , C01G3/00 , C04B35/00 , C04B35/45 , H01B13/00
摘要： PURPOSE:To precipitate a superconductive phase by low-temperature sintering with bubbling reduced by heat-treating a mixture of a fine powder resulting from hydrolysis of alkoxides of Ba, Cu and Y and Ln and another powder of Y2O3 or BaCO3. CONSTITUTION:Alkoxides of Ba, Cu and Y or Ln are used as a starting substance to effect hydrolysis into a fine powder. The fine powder is mixed with another powder from Y2O3, BaCO3, CuO, Ln2O3. The mixture is hat-treated to give an oxide of Y-Ba-Cu-O or Ln-Ba-Cu-O.

84. 发明专利

JPS636504B2 失效
公开(公告)号：JPS636504B2
公开(公告)日：1988-02-10
申请号：JP8102080
申请日：1980-06-16
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SENDA KAZUNORI , KIMURA TAKAO , SAKAGUCHI SHIGEKI
IPC分类号： C03C25/10 , B05D1/18 , G02B6/44

85. 发明专利

JPS61260204A OPTICAL FIBER SENSOR FOR DETECTING WATER 失效
公开(公告)号：JPS61260204A
公开(公告)日：1986-11-18
申请号：JP10357185
申请日：1985-05-15
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KIMURA TAKAO , HAZAMA TADASHI
IPC分类号： G01N21/17 , G01F23/28 , G01F23/292 , G01N21/59 , G02B6/02 , G02B6/44
摘要： PURPOSE:To make possible the detection of water in the longitudinal direction of an optical fiber and to obtain an inexpensive optical fiber sensor for detecting water by providing an inside coating layer having the Young's modulus lower than the Young's modulus of an outside coating layer to be formed on the outside of the inside coating layer to the optical fiber side and forming said inside coating layer of a resin compsn. layer contg. an absorptive material. CONSTITUTION:The optical fiber sensor for detecting water consists of the inside coating layer contg. the water absorptive material on the outside of the optical fiber and the outside coating layer having the Young's modulus higher than the Young's modulus of the inside coating layer. The inside coating layer is the resin compsn. coating layer which contains the water absorptive material and swells by absorbing water. The Young's modulus of said layer is lower than the Young's modulus of the outside coating layer. Resins which are generally used as the coating material of optical fibers can be effectively used for the main resin component to constitute the resin compsn. Basically any materials which swell the resin compsn. by absorbing water are usable for the water absorptive material to be added to the resin component. The amt. of the water absorptive material to be added is preferably 5-50wt%. The Young's modulus of the inside coating layer is preferably .

86. 发明专利

JPS60154220A COATED OPTICAL FIBER AND ITS PRODUCTION 失效
公开(公告)号：JPS60154220A
公开(公告)日：1985-08-13
申请号：JP1032384
申请日：1984-01-25
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： AZUMA MAKOTO , YAMAMOTO FUMIO , KIMURA TAKAO , SHIYUDOU YOSHITO , YAMAKAWA SHINZOU
IPC分类号： C03C25/10 , B29C47/00 , C03C25/18 , G02B6/44
摘要： PURPOSE:To enable high-speed coating and to reduce cost by forming the 1st layer consisting of an extrusion-coatable thermoplastic rubber compsn. having the Young's modulus of a specific value or below and the 2nd layer consisting of a thermoplastic resin having the Young's modulus of a specific value or above and the coefft. of linear expansion of a specific value or below by extrusion-coating on the outside circumference of an optical fiber. CONSTITUTION:A base material 1 for an optical fiber is spun by using a cross head which is of a straight pipe shape having coefft. of thermal expansion and >=1GPa Young's modulus for example, a copolymer of p-hyroxy benzoic acid and polyethylene terephthalate or the like is used for the 2nd layer of said coating. The high-speed extrusion coating is thus made possible and the production of an optical fiber cable, etc. having high reliability is made possible.

87. 发明专利

JPS60103321A RESIN-COATED OPTICAL FIBER AND ITS PRODUCTION 失效
公开(公告)号：JPS60103321A
公开(公告)日：1985-06-07
申请号：JP21107783
申请日：1983-11-11
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KIMURA TAKAO , AZUMA MAKOTO , OKAZAKI HISAAKI , YAMAKAWA SHINZOU
IPC分类号： C03C25/10 , G02B6/44
摘要： PURPOSE:To obtain inexpensively a resin-coated optical fiber having a low transmission loss by coating a resin compsn. contg. a styrene/butadiene block copolymer, process oil and heat stabilizer and having low modulus of elasticity to an optical fiber immediately after spinning. CONSTITUTION:(A) 40-95wt% a Styrene/butadiene block copolymer having 20- 60wt% styrene concn., (B) 60-5wt% process oil (e.g. naphthene oil) and (C) heat stabilizer (e.g., zinc dibutyl thiocarbamate) are mixed. The resin compsn. having modulus of elasticity, poise melt viscosity at the coating temp. and >=30sec gel time at the coating temp. is thus prepd. The above-described resin compsn. is extruded and coated from an extruder onto the optical fiber obtd. by melting an optical fiber base material by heating and spinning the melt immediately after spinning, by which the intended resin coated optical fiber is obtd.

88. 发明专利

JPS58135143A COVERING PROCESS OF OPTICAL FIBER 失效
公开(公告)号：JPS58135143A
公开(公告)日：1983-08-11
申请号：JP1575682
申请日：1982-02-03
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SHIYUDOU YOSHITO , KIMURA TAKAO , YAMAKAWA SHINZOU
IPC分类号： C03C25/10 , C03B25/02 , C03B37/00 , G02B6/44
摘要： PURPOSE:To keep the transmission loss and mechanical strength of optical fiber and to improve economic efficiency, by coating the outer periphery of the optical fiber with a specific resin composition, curing it by heating or ultraviolet- light irradiation. CONSTITUTION:A resin composition is obtained by blending (A) a 1,4-polybutadiene unsaturated ester having both esterified terminal groups with (B) a 1,2- polubutadiene unsaturated ester and (C) a polymerizable double bond-containing compound (e.g., polyethylene glycol diacrylate) in such a way that a molar ratio of the component A to the component B is 1:(0.1-2.2) and a ratio of the total number of moles of the component A dnd the component B to the number of moles of the component C is 0.03-1.8 to give a mixture, followed by mixing the mixture with (D) 0.1-10wt% polymerization initiator (e.g., methyl ethyl ketone peroxide) or sensitizer (e.g., benzophenone). The resin composition is applied to the surface of an optical fiber immediately after the spinning of a fiber parent material, and cured by heating at 150-250 deg.C or by ultraviolet- light irradiation.

89. 发明专利

JPS5835941B2 失效
公开(公告)号：JPS5835941B2
公开(公告)日：1983-08-05
申请号：JP6731378
申请日：1978-06-06
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KIMURA TAKAO , NAKAHARA MOTOHIRO
IPC分类号： C03C25/24 , C09D175/14 , G02B6/44

90. 发明专利

JPS5835940B2 失效
公开(公告)号：JPS5835940B2
公开(公告)日：1983-08-05
申请号：JP9818577
申请日：1977-08-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KIMURA TAKAO , NAKAHARA MOTOHIRO
IPC分类号： C03C25/24 , C03B37/00 , C09D175/14 , G02B6/44

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