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1. 发明专利

JPS6434462A SUPERSONIC ATOMIZER 失效
公开(公告)号：JPS6434462A
公开(公告)日：1989-02-03
申请号：JP19144587
申请日：1987-07-30
申请人： HITACHI CHEMICAL CO LTD
发明人： TAYA MASATO , USAMI YOSHIHIRO , KOBAYASHI MASARU , ASHIZAWA TORANOSUKE , SUZUKI TOSHITAKA
IPC分类号： B05B17/06 , B06B1/06
摘要： PURPOSE:To enable, with a small consumption of electrical power, well-balanced atomization in which the spraying angle is large and the diameters of atomized particles are small, by forming an atomizing surface arcuately with a specific angle. CONSTITUTION:Vibrators 7 are sandwiched between and supported by a front horn 5 and a back horn 9, and a liquid fed from a liquid-supplying orifice 3 is atomized from a nozzle 1 at the tip of the front horn 5. An atomizing surface 2 at the tip of the nozzle 1 is so rounded that its cross-section is arcuate and that the angle theta defined by the chord K and the tangent line J at an intersection point of the arc and the chord is in the range of from 30-40 deg.. As a result, atomizing can be performed by a low electric power, and further a larger spraying angle and a smaller diameter of atomized particles can be attained.

2. 发明专利

JPS6247547A GASEOUS CO DETECTING ELEMENT 失效
公开(公告)号：JPS6247547A
公开(公告)日：1987-03-02
申请号：JP18808185
申请日：1985-08-27
申请人： HITACHI CHEMICAL CO LTD
发明人： OTSUKI HIROTO , KOBAYASHI MASARU , USAMI YOSHIHIRO
IPC分类号： G01N27/409 , G01N27/416
摘要： PURPOSE:To permit the detection of gaseous CO without being affected by environmental humidity by using a powder mixture composed of 100pts.wt. SnO2 powder, 0.05-5.0pts.wt. Ag powder and 1-50pts.wt. powder of at least one kind of inorg. material selected from Al2O3, SiO3 and aluminosilicate. CONSTITUTION:Electromotive force taking-out leads 2, 2' are thick-film printed on a stabilized ZrO2 substrate 1 and are baked. Pt films are then formed by electron ray vapor deposition on both faces of the substrate to form Pt electrodes 3, 3'. Gold wires 10, 10' are connected by thermocompression bonding to the leads 2, 2'. The substrate 1 is adhered to the position of the step part 5 of a case 4 and after the inside of the case 4 is divided to two chambers a Pt catalyst 6 deposited on alumina is packed into the chamber on the electrode 3 side and a catalyst mixture 7 is packed into the chamber of the electrode 3'. The powder mixture preped. by mixing 0.05-5.0pts.wt. Ag powder and 1-50pts.wt. powder of at least one kinds of inorg. material selected from Al2O3, SiO2 and aluminosilicate with 100pts.wt. SO2 powder is used for the catalyst 7, by which the dependency on the environmental humidity is improved.

3. 发明专利

JPS6233543A CATALYST FOR OXIDATION OF COMBUSTIBLE GAS 失效
公开(公告)号：JPS6233543A
公开(公告)日：1987-02-13
申请号：JP17374285
申请日：1985-08-07
申请人： HITACHI CHEMICAL CO LTD
发明人： OTSUKI HIROTO , KOBAYASHI MASARU , USAMI YOSHIHIRO
IPC分类号： C01B5/00 , B01D53/86 , B01J23/66 , C01B32/40
摘要： PURPOSE:To improve the dependency of oxidation activity on temp. and to upgrade the selective oxidation efficiency of H2 in a gaseous mixture by adding and dispersing 0.05-5.0pts.wt. silver powder to 100pts.wt. tin oxide powder thereby producing a catalyst for oxidation of combustible gas. CONSTITUTION:The Ag-deposited SnO2 catalyst is produced by adding and mixing Ag powder to and with the SnO2 powder obtd. by thermally decomposing the SnO2 raw material at about 500-800 deg.C, or thermally decomposing the SnO2 raw material at about 500-800 deg.C after the addition of silver powder to SnO2 raw material. The Ag powder is required to be added at 0.05-5.0pts.wt. by about 100pts.wt. SnO2 powder. This Ag-deposited SnO2 catalyst oxidizes H2 selectively at 300-350 deg.C, oxidizes nearly 90% H2 particularly at 300 deg.C, suppresses the oxidation of CO to a low level and increases the selective oxidation ratio of gaseous H2.

4. 发明专利

JPS6233542A CATALYST FOR OXIDATION OF GAS 失效
公开(公告)号：JPS6233542A
公开(公告)日：1987-02-13
申请号：JP17374185
申请日：1985-08-07
申请人： HITACHI CHEMICAL CO LTD
发明人： OTSUKI HIROTO , KOBAYASHI MASARU , USAMI YOSHIHIRO
IPC分类号： C01B5/00 , B01D53/86 , B01J23/66 , B01J29/06 , C01B32/40
摘要： PURPOSE:To extend the life of a catalyst and to eliminate dependency on temp. by mixing a specific ratio of silver powder with tin oxide powder and adding and mixing a specific ratio each of >=1 kinds selected from alumina, silica and aluminosilicate to and with the powder mixture and mixing these powders. CONSTITUTION:Ag powder is added and mixed to and with the SnO2 powder obtd. by decomposing the SnO2 raw material by heating to about 500-800 deg.C to obtain the Ag-deposited SnO2 powder. At least one kind of the inorg. powder selected from the alumina, silica and aluminosilicate is added and mixed to and with such Ag-deposited SnO2 powder at 1-50pts.wt. by 100pts.wt. SnO2 powder to obtain the catalyst for oxidation of gas which has the small dependency of the oxidation activity on atmospheric temp. and is stable for a long period of time. The powder of the above-mentioned inorg. powder is adequately

5. 发明专利

JPS58145664A MANUFACTURE OF SILICON CARBIDE SINTERED BODY 失效
公开(公告)号：JPS58145664A
公开(公告)日：1983-08-30
申请号：JP2927182
申请日：1982-02-24
申请人： HITACHI CHEMICAL CO LTD
发明人： USAMI YOSHIHIRO , AIBA YASUHIRO
IPC分类号： C04B35/565 , B28B7/34 , C04B35/56 , C04B35/64

6. 发明专利

JPS57129872A MANUFACTURE OF SILICON CARBIDE SINTERED BODY BY MUD CAST FORMATION 失效
公开(公告)号：JPS57129872A
公开(公告)日：1982-08-12
申请号：JP1652181
申请日：1981-02-05
申请人： HITACHI CHEMICAL CO LTD
发明人： USAMI YOSHIHIRO , AIBA YASUHIRO
IPC分类号： C04B35/64 , B28B1/26 , B28B7/38 , C04B35/56 , C04B35/565

7. 发明专利

JPH04322401A HIGH TEMPERATURE THERMISTOR ELEMENT 失效
公开(公告)号：JPH04322401A
公开(公告)日：1992-11-12
申请号：JP9180991
申请日：1991-04-23
申请人： HITACHI CHEMICAL CO LTD
发明人： OTSUKI HIROTO , USAMI YOSHIHIRO , WADA HIROSHI
IPC分类号： H01C7/04
摘要： PURPOSE:To provide a high temperature thermistor element which ensures good temperature-resistance characteristic and small variation of resistance value. CONSTITUTION:In a high temperature thermistor element 1 arranging an electrode 2 on a main body 9 made of oxygen ion conductive solid state electrolyte, the electrode 2 is formed with dense oxidation proof metal molded materials 21, 21' and composite materials 22, 22' of oxidation proof metal and oxygen ion conductive solid state electrolyte and the composite materials 22, 22' are arranged in the intermediate area between the main body 9 and dense oxidation proof metal molded materials 21, 21'.

8. 发明专利

JPH0248058B2 失效
公开(公告)号：JPH0248058B2
公开(公告)日：1990-10-23
申请号：JP22101882
申请日：1982-12-15
申请人： HITACHI CHEMICAL CO LTD
发明人： USAMI YOSHIHIRO , KOBAYASHI MASARU
IPC分类号： G01N27/409 , G01N27/407

9. 发明专利

JPS6414179A PRODUCTION OF THIN SHEET OF PIEZOELECTRIC SHEET 失效
公开(公告)号：JPS6414179A
公开(公告)日：1989-01-18
申请号：JP16904987
申请日：1987-07-07
申请人： HITACHI CHEMICAL CO LTD
发明人： OTSUKI HIROTO , KOBAYASHI MASARU , USAMI YOSHIHIRO , ASHIZAWA TORANOSUKE , TAYA MASATO
IPC分类号： C04B35/64 , H01B3/00
摘要： PURPOSE:To produce a thin sheet of piezoelectric ceramic good in piezoelectric characteristics by sealing and wrapping the green sheet of the piezoelectric ceramic contg. lead finished with degreasing with a calcined sheet consisting of the same raw material as it, and sealing and enclosing it into a calcination vessel to calcine it. CONSTITUTION:A green sheet of piezoelectric ceramic is obtained by adding and mixing a binder to/with the powder of a raw material for the piezoelectric ceramic contg. lead such as a lead zirconate-lead titanate and molding the mixture into the sheet. This green sheet is heated at the prescribed temp. and degreasing is performed. The green sheet 7 of the piezoelectric ceramic after decreasing which is obtained thereby is sealed and wrapped with a floorplate 6, a spacer 5 and a roof 4. The material obtained by molding the above-mentioned powder of the raw material and calcining it is used for these plates and spacer. This wrapped material is sealed and enclosed into a calcination vessel 2 having a cover 1 and if necessary, ceramic powder contg. lead or its molded form 3 is enclosed together therewith. Then the thin sheet of a sintered material which is free from a warpage and deformation and has high density and good piezoelectric characteristics is obtained by calcining them in this state.

10. 发明专利

JPS63180849A CO GAS SENSOR 失效
公开(公告)号：JPS63180849A
公开(公告)日：1988-07-25
申请号：JP1295287
申请日：1987-01-22
申请人： HITACHI CHEMICAL CO LTD
发明人： OTSUKI HIROTO , USAMI YOSHIHIRO , KOBAYASHI MASARU
IPC分类号： G01N27/409
摘要： PURPOSE:To enable selective detection of a CO gas in an atmosphere, by arranging a catalyst with a large oxidation removing capacity for a combustible gas other than the CO gas made up of a mixed stannic oxide powder consisting of 0.05-5.0pts.wt. of silver powder and 1-50pts.wt. of molecular sieve powder per 100pts.wt. of the stannic oxide and a tungsten oxide powder. CONSTITUTION:This sensor comprises a pair of electrodes on the surface of a base material of an oxygen ion conducting solid electrolyte: one of the electrodes is covered with a catalyst for oxidizing a combustible gas, and the other with a catalyst large in the oxidation removing capacity for the combustible gas other than the CO gas. Then, the catalyst large in the oxidation removing capacity for the combustible gas other than the CO gas is made up of a powder mainly composed of stannic oxide powder mixed with 0.05-5.0pts.wt. of silver powder and 1-50pts.wt. of molecular sieve powder per 100pts.wt. of the stannic oxide powder and a tungsten oxide powder. Thus, a detection element thus obtained is low in the sensitivity to H2 and ethanol, thereby permitting selective detection of the CO gas even when the gas density is about 5,000ppm.

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