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1. 发明专利

JPS62176955A POWDER COMPOSITION FOR ELECTRIC INSULATION SILICON CARBIDE SINTERED BODY 失效
公开(公告)号：JPS62176955A
公开(公告)日：1987-08-03
申请号：JP1635186
申请日：1986-01-28
申请人： SHOWA DENKO KK , HITACHI LTD
发明人： HIOKI NOBUAKI , MAEDA KUNIHIRO , SUZUKI YASUTAKA
IPC分类号： C04B35/565 , C04B35/56

2. 发明专利

JPH01234826A LIQUID CRYSTAL DISPLAY ELEMENT 失效
公开(公告)号：JPH01234826A
公开(公告)日：1989-09-20
申请号：JP6302888
申请日：1988-03-15
申请人： SHOWA DENKO KK
发明人： HIOKI NOBUAKI , ONO FUMIYOSHI
IPC分类号： G02F1/1339 , G02F1/133
摘要： PURPOSE:To enhance the dimensional accuracy of the distances between substrates and electrode plates of a liquid crystal and to decrease optical troubles in various terms by using the high-purity spherical silica obtd. by a sol-gel method as spacers. CONSTITUTION:Two sheets of the substrates 1a and 1b are disposed to face each other. The spacers 2 consisting of the high-purity spherical silica formed by the sol-gel method are disposed and laminated along the peripheral of the two substrates 1a and 1b in order to provide a spacing of a prescribed size between said substrates. After the liquid crystal is injected into the inside, the circumference is hermetically sealed. The transparent electrodes of character shapes, etc., are provided on the inside surface of the substrate 1a in such a manner that a desired pattern is obtd. In addition, the counter electrode for the transparent electrodes is provided on the inside surface of another substrate 1b. The spacing between the substrates and the spacing between the electrodes are thereby uniformized and made constant with high accuracy and the element which is chemically stable and has a long life is obtd.

3. 发明专利

JPS6047229B2 JPS6047229B2 - 失效
公开(公告)号：JPS6047229B2
公开(公告)日：1985-10-21
申请号：JP6719378
申请日：1978-06-06
申请人： Showa Denko Kk
发明人： YAMADA AKIRA , HIOKI NOBUAKI
IPC分类号： C04B35/66 , C04B35/63 , C04B37/00 , C04B41/87

4. 发明专利

JPS54158425A COATING MATERIAL FOR CERAMICS 失效
公开(公告)号：JPS54158425A
公开(公告)日：1979-12-14
申请号：JP6719378
申请日：1978-06-06
申请人： SHOWA DENKO KK
发明人： YAMADA AKIRA , HIOKI NOBUAKI
IPC分类号： C04B35/66 , C04B35/63 , C04B37/00 , C04B41/87

5. 发明专利

JPS53125292A COMPOSITE ACTIVATED CARBON ELEMENT AND PRODUCTION THEREOF 失效
公开(公告)号：JPS53125292A
公开(公告)日：1978-11-01
申请号：JP3987077
申请日：1977-04-07
申请人： SHOWA DENKO KK
发明人： HIOKI NOBUAKI , YAMADA AKIRA , KIYONO SADANORI
IPC分类号： C01B31/08 , B01D15/00 , B01D53/02 , B01J20/28
摘要： PURPOSE:To easily produce a superior composite activated carbon adsorbent easy to handle adding activated carbon whose surface has been coated with a liquid having poor compatibility with resin to raw materials for resin foam and forming open cell synthetic resin foam.

6. 发明专利

JPH0311756A SEMICONDUCTOR SURFACE PROTECTIVE RESIN COMPOSITION 失效
公开(公告)号：JPH0311756A
公开(公告)日：1991-01-21
申请号：JP14548489
申请日：1989-06-09
申请人： SHOWA DENKO KK , RIKEI CORP
发明人： SANO YASUSHI , HIOKI NOBUAKI , ONO FUMIYOSHI
IPC分类号： H01L23/29 , H01L23/31
摘要： PURPOSE:To obtain an organic passivation film excellent in reproducibility with no residual stress even if it is large in thickness by a method wherein resin composition is composed of high impurity ball-like silica microparticles whose grain diameters range from 0.01 to 10mum and resin. CONSTITUTION:The grain diameters of high impurity ball-like silica microparticles contained in resin composition used for a passivation film are made to range from 0.01 to 10mum. When ball-like silica particles are smaller than 0.01mum in grain diameter, they are inferior in dispersion when mixed into resin, so that the resin composition are hardly controlled to be excellent in reproducibility of viscosity and thixotropy. When they exceed 10mum in grain diameter, the resin composition can not be formed into a film as thick as adapted for a spin coating method, so that they must not exceed 10mum in grain diameter so as to enable the formed film to meet a required performance in resolution. The thixotropic property concerned is that it is related to the cross-sectional shape and the resolution of a formed film, and when the resin compound is large in thixotropic property, the end of the formed film hardly runs, so that a film uniform in thickness can be obtained when the resin compound is large in thixotropy.

7. 发明专利

JPH02229708A PRODUCTION OF MONODISPERSED SPHERICAL SILICA 失效
公开(公告)号：JPH02229708A
公开(公告)日：1990-09-12
申请号：JP4834889
申请日：1989-02-28
申请人： SHOWA DENKO KK
发明人： ONO FUMIYOSHI , HIOKI NOBUAKI
IPC分类号： C01B33/18 , C01B33/16
摘要： PURPOSE:To obtain coarse spherical silica particles having superior monodispersibility by feeding gaseous ammonia to alkyl silicate in a reaction system and bringing them into a reaction. CONSTITUTION:Alkyl silicate represented by formula I or II (where each of R, R' and R'' is alkyl and n is an integer of >=0), e.g. 1-3C methyl silicate is mixed with an org. solvent such as acetone and introduced into a reaction system. Gaseous ammonia is continuously blown into the reaction system at about 1.6l/min flow rate from a silicon tube so fitted that the tube is brought into contact with the surface of the liq. mixture in the reaction system, 28.0-47.3wt.% aq. ammonia soln. is added to the mixture at one time and the alkyl silicate is hydrolyzed for about 1hr. The resulting reaction product is centrifugally filtered and monodispersible spherical silica having about 2.1mum average particle size and about 1.04 coefft. sigma2 of variation of particle size is produced.

8. 发明专利

JPH01282116A PRODUCTION OF SPHERICAL MONODISPERSED SILICA HAVING HIGH PURITY 失效
公开(公告)号：JPH01282116A
公开(公告)日：1989-11-14
申请号：JP32997588
申请日：1988-12-27
申请人： SHOWA DENKO KK
发明人： HIOKI NOBUAKI , ONO FUMIYOSHI
IPC分类号： C01B33/18
摘要： PURPOSE:To obtain silica particles having good monodispersibility, in good reproducibility by separately adding and mixing aq. ammonia in an intermittent pulsing manner when alkyl silicate in an org. solvent is hydrolyzed with aq. ammonia. CONSTITUTION:The hydrolyzable alkyl silicate is dissolved in the org. solvent and thereafter hydrolyzed by adding aq. ammonia having a certain concn. while keeping at a constant temp. The aq. ammonia is divided into more than two fractions, and added and mixed in an intermittent pulsing manner. Thereby, the spherical silica having excellent so-called monodispersibility, uniform particle size, larger particle size than that produced by conventional method, and high purity, is obtd.

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