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21. 发明专利

JPH01136705A FILTER-PRESS-MOLDING OF CERAMIC POWDER 失效
公开(公告)号：JPH01136705A
公开(公告)日：1989-05-30
申请号：JP29656287
申请日：1987-11-25
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ANDO HAMAE , NISHIDA MASAMITSU , MIHARA TOSHIHIRO
IPC分类号： B28B3/02 , B28B1/26 , C04B35/00 , C04B35/622
摘要： PURPOSE:To manufacture a molded product of high density by molding in a filter press, making the volume of the liquid in slurry to be four times as much as the true volume of ceramic powder or less and mixing the slurry with a dispersant of which volume is 0.5-2.5wt.% of said ceramic powder. CONSTITUTION:Ceramic material and pure water are put into a pot mill in equal amounts, mixed together for 20 hours, dried calcinated, and sufficiently pulverised into submicron particles. This ceramic powder of submicron-sized particles is added with pure water 1-8 times as much as the true volume of said powder and also a dispersant of polycarboxylic acid type, and polyvinyl alcohol is added according to demand, and they are all mixed in the pot mill into a uniform slurry. This slurry is poured into a mold for pressing to manufacture a molded product of high density.

22. 发明专利

JPH01110101A METHOD FOR CAST MOLDING OF CERAMIC POWDER 失效
公开(公告)号：JPH01110101A
公开(公告)日：1989-04-26
申请号：JP26856487
申请日：1987-10-23
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NISHIDA MASAMITSU , ANDO HAMAE , MIHARA TOSHIHIRO
IPC分类号： C04B35/622 , B28B1/26 , C04B35/00
摘要： PURPOSE:To uniformly mold a ceramic powder of sub-micron at high density by reducing the volume of the liquid in a slurry and incorporating a large amount of a dispersant in the slurry. CONSTITUTION:For example, pure water being a liquid having specific gravity lower than that of a ceramic powder is added to the ceramic powder having a sub-micron particle size in a volume 4 times or less than the real volume of said powder and 0.5-2.5wt.% of a dispersant corresponding to the kind of the powder or liquid and a binder are added thereto to prepare a uniform slurry which is, in turn, subjected to cast molding. By this method, since the slurry is prepared using a large amount of dispersant, the dispersibility of the ceramic powder becomes remarkably good and a uniform high density molded body can be prepared.

23. 发明专利

JPS63311303A PRODUCTION OF OPTICAL FIBER FOR INFRARED LIGHT 失效
公开(公告)号：JPS63311303A
公开(公告)日：1988-12-20
申请号：JP14854587
申请日：1987-06-15
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： IKEDO TOSHI , WATARI MASABUMI , ANDO HAMAE , NAKANOU HIROMI
IPC分类号： G02B6/00 , C03B37/023 , C03B37/027
摘要： PURPOSE:To improve the mechanical strength of a polycrystalline fiber by exerting a specific pressure on a crystal at the time of extruding and subjecting the crystal to a heat treatment after molding. CONSTITUTION:The warm extrusion of a polycrystalline fiber 6 is executed by selecting the diameter of a die 1 as desired and using the preform crystal conformed to the diameter of a container for extrusion. The extrusion temp. of the fiber is set at . The transmission efficiency of the as-extruded fiber 6 is 40 and odds %. The heat treatment is executed at >=80 deg.C for about 2hr for the better effect. The bending radius of the optical cable for a laser surgical knife is thereby greatly improved. In addition, the cable is hardly breakable even when the cable is casually dropped. The reliability in handling is thus improved.

24. 发明专利

JPH0987970A SHRINK PROOFING AND CREASE PROOFING OF CLOTHING MATERIAL 失效
公开(公告)号：JPH0987970A
公开(公告)日：1997-03-31
申请号：JP24571395
申请日：1995-09-25
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： IKEDO TOSHI , MORI KUNIHITO , ANDO HAMAE
IPC分类号： D06M11/00 , D06M11/07 , D06M15/39 , D06M23/06 , D06M101/00 , D06M101/02 , D06M101/04 , D06M101/06 , D06M101/08
摘要： PROBLEM TO BE SOLVED: To impart washing-durable shrink-proofing and crease-proofing properties to cotton clothes while the liberation of free formaldehyde is suppressed, by applying the processing solution containing a glyoxizal based resin, a catalyst and a formaldehyde-trapping agent, followed by drying and heat treating. SOLUTION: A processing liquid is prepared by formulating 10-30wt.% of a glyoxal based resin and 20-40wt.%, based on the parent-material, of a catalyst consisting of a metal salt such as magnesium chloride and an organic acid and 10-20wt.%, based on the parent-material, of formaldehyde-scavenger. A cotton cloth or a cotton blended cloth is sprayed with or dipped in this processing solution, dried and heat treated.

25. 发明专利

JPH04349164A PIEZOELECTRIC CERAMICS AND PRODUCTION THEREOF 失效
公开(公告)号：JPH04349164A
公开(公告)日：1992-12-03
申请号：JP11857791
申请日：1991-05-23
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NISHIDA MASAMITSU , ANDO HAMAE , KUGIMIYA KOICHI
IPC分类号： C04B35/00 , C04B35/49 , H01L41/18 , H01L41/187 , H01L41/39
摘要： PURPOSE:To facilitate the control of the rates of changes in piezoelectric characteristics with temp. and with the lapse of time and to provide piezoelectric ceramics having low rates of such changes and high stability by rendering plural regions having different compsns. and three-dimensionally bonding the regions to each other. CONSTITUTION:Powdery starting materials having different compsns. are pulverized to

26. 发明专利

JPH04221888A CERAMIC CIRCUIT BOARD AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH04221888A
公开(公告)日：1992-08-12
申请号：JP40485690
申请日：1990-12-21
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOKOYA YOICHIRO , ANDO HAMAE , KUGIMIYA KOICHI
IPC分类号： C04B37/02 , H01L21/48 , H01L23/498 , H05K1/09 , H05K3/38 , H05K3/46
摘要： PURPOSE:To provide a ceramic circuit board having high reliability by preventing defects of a ceramic part, an insulating layer due to partial diffusion of copper oxide produced by the oxidation of a conductor during baking into the ceramic part and insulating layer in the board using copper or alloy containing copper as a main ingredient as conductor metal. CONSTITUTION:Entire ceramic board, insulating layer contain copper content in such a manner that the copper content does not exist as metal or oxide of copper alone but exists as composite oxide or oxide solid solution of copper and other one or more components. Its manufacturing process includes steps of previously reacting the copper oxide with other components to use composite oxide or oxide solid solution of copper and other one or more components as a starting material of the ceramic board, the insulating layer. Partial diffusion of the copper oxide oxidized from the conductor during baking into the ceramic board, the insulating layer is prevented to obtain a ceramic circuit board having high reliability.

27. 发明专利

JPH04113608A MULTILAYER CERAMIC CAPACITOR, TERMINAL ELECTRODE PASTE AND FORMATION OF TERMINAL ELECTRODE 失效
公开(公告)号：JPH04113608A
公开(公告)日：1992-04-15
申请号：JP23361190
申请日：1990-09-03
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOKOYA YOICHIRO , ANDO HAMAE , KUGIMIYA KOICHI
IPC分类号： H01G4/12 , H01G4/008 , H01G4/232 , H01G4/252 , H01G4/30
摘要： PURPOSE:To make solderability good, to reduce a drop in solderability when the surface of an electrode is oxidized and to relax a thermal shock to an element at a soldering operation by a method wherein the cross section of a terminal electrode part is provided with the following: a substratum layer containing an inorganic frit; and an intermediate layer as well as a surface layer which are composed of the mixed texture phase of metal phases at a specific composition. CONSTITUTION:The cross section of a terminal electrode part for a multilayer ceramic capacitor is provided with the following: a substratum layer 12 which contains inorganic frits 18 bonded to a ceramic raw body partially; an intermediate layer 13 composed of a mixed phase 17 by a metal phase composed mainly of one kind selected from (a) silver as well as (b) lead, zinc and tin, by an intermetallic compound phase or by a solid solution alloy phase and by a nickel metal phase 16; and, in addition, a surface layer 14 in which the content of said (b) component as at least one kind selected from lead, tin and zinc is more than that of said intermediate layer as an average composition. As the composition ratio of metal components contained in an electrode paste, the total weight ratio of lead, zinc and tin components is at 0.5wt.% or higher and 45wt.% or lower and the weight ratio of a nickel component is at 3wt.% or higher and 25wt.% or lower.

28. 发明专利

JPH02137283A CERAMIC PIEZOELECTRIC ELEMENT AND POLARIZATION PROCESSING METHOD OF PIEZOELECTRIC CERAMIC 失效
公开(公告)号：JPH02137283A
公开(公告)日：1990-05-25
申请号：JP29116688
申请日：1988-11-17
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ANDO HAMAE , NISHIDA MASAMITSU , KUGIMIYA KOICHI
IPC分类号： C04B35/49 , C04B35/493 , H01L41/187 , H01L41/257
摘要： PURPOSE:To improve lineality, reduce variation with time at a high temperature, and realize large output and strength by a method wherein crystal grain diameter is made smaller than or equal to a specified value, composition is made into perovskite structure, and polarization processing temperature is specified with respect to Curie point. CONSTITUTION:Piezoelectric ceramics in a ceramic piezoelectric element constituted of piezoelectric ceramic and an electrode is formed of perovskite structure material whose average crystal grain diameter is smaller than or equal to 1.0mum. As to polarization processing, polarization is performed in a temperature range higher than or equal to 2/5 of Curie point in centigrade and lower than or equal to Curie point. Thereby, the lineality of a ceramic piezoelectric element is improved, so that a stable ceramic piezoelectric element, wherein variation with time at a high temperature is little and output and strength are large, can be obtained.

29. 发明专利

JPH0280367A PRODUCTION OF PEROVSKITE TYPE CERAMICS CONTAINING ZIRCONIUM 失效
公开(公告)号：JPH0280367A
公开(公告)日：1990-03-20
申请号：JP22912088
申请日：1988-09-13
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ANDO HAMAE , NISHIDA MASAMITSU , KUGIMIYA KOICHI
IPC分类号： C04B35/48 , C04B35/49
摘要： PURPOSE:To easily attain high density and to easily improve homogeneity and piezoelectric property by adding Zr of a prescribed average particle size. CONSTITUTION:Powdery starting material consisting of a Zr component of

30. 发明专利

JPH0268151A MEDIUM STIRRING TYPE PULVERIZER 失效
公开(公告)号：JPH0268151A
公开(公告)日：1990-03-07
申请号：JP21904488
申请日：1988-09-01
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NISHIDA MASAMITSU , ANDO HAMAE , KUGIMIYA KOICHI
IPC分类号： B02C17/20 , B01F7/00 , B01F15/00 , B02C17/22
摘要： PURPOSE:To pulverize a ceramic powder into fine particles within an extremely short time by constituting the inner surface of a pulverizing container of composite material consisting of a powder of either one of ceramics and metal, and an org. polymer material. CONSTITUTION:In a medium stirring type crusher equipped with a pulverizing container, round balls and a stirrer, at least the inner surface of the pulverizing container is constituted of a composite material consisting of a powder of either one of ceramics (e.g., SiC) and a metal (e.g., Al), and an org. polymer material (e.g., polyurethane). That is, the intermixing of a metal component by abrasion is reduced and heat transfer can be well done because of high heat conductivity. As a result, a pulverizing speed can be markedly increased and a ceramic powder can be pulverized within an extremely short time and the abrasion of round balls can be also reduced.

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