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1. 发明专利

JP2000344516A PRODUCTION OF alpha-ALUMINA POWDER 失效
公开(公告)号：JP2000344516A
公开(公告)日：2000-12-12
申请号：JP15757699
申请日：1999-06-04
申请人： USHIO ELECTRIC INC
发明人： TORIKAI TETSUYA , MORINAGA KENJI
IPC分类号： C04B35/626 , C01F7/30 , C04B35/115
摘要： PROBLEM TO BE SOLVED: To produce an easily sinterable α-alumina fine powder being a sintering raw material for a translucent alumina ceramic and having

2. 发明专利

JP2000067815A LAMP 失效
公开(公告)号：JP2000067815A
公开(公告)日：2000-03-03
申请号：JP23085398
申请日：1998-08-17
申请人： USHIO ELECTRIC INC
发明人： MATSUNO HIROMITSU , TORIKAI TETSUYA , MORINAGA KENJI , TAGAWA KOJI
IPC分类号： H01J61/30 , H01J17/18 , H01J61/35 , H01J61/36 , H01K1/28 , H01K1/32 , H01K1/38
摘要： PROBLEM TO BE SOLVED: To provide a lamp that allows an arc tube part of a lamp formation container to be formed with high dimensional accuracy and can provide an excellent light radiation characteristic and a long service life. SOLUTION: Features of this lamp are that a luminescent mechanism part comprising a discharge electrode or a filament coil is provided in an arc tube part of a lamp formation container, the lamp formation container is composed of the arc tube part 14 and a closed tube part 16 both formed of a sintered quartz glass formed body, and a closing member 20 airtightly bonded to the closed tube part 16, the luminescent mechanism part is joined to the closing member 20, and one end of the closing member 20 is formed of silica while its other end is formed of a functionally gradient material containing a conductive inorganic substance constituent as a main constituent.

3. 发明专利

JP2000344535A METHOD FOR RECYCLING QUARTZ GLASS MOLDING 失效
公开(公告)号：JP2000344535A
公开(公告)日：2000-12-12
申请号：JP15519699
申请日：1999-06-02
申请人： USHIO ELECTRIC INC
发明人： TAGAWA KOJI , MATSUNO HIROMITSU , TORIKAI TETSUYA , MORINAGA KENJI
IPC分类号： B09B3/00 , B09B5/00 , C03B19/06 , C03B20/00
摘要： PROBLEM TO BE SOLVED: To provide a method for recycling a quartz glass molding to manufacture a quartz glass having high light transmissivity molding by reusing a disused quartz glass molding to save energy necessary for molding and utilizing a sintering method industrially suitable for mass production. SOLUTION: A quartz glass powder raw material comprising a main component of quartz glass coarse powder obtained by pulverizing a disused quartz glass molding and quartz glass fine powder which is obtained by a chemical method and mixed with the main component is molded into a shape of a final product as a temporary molding. The temporary molding is sintered under the condition that a moganite phase of polymorphism of silica is formed in a sintering process or under the condition the crystalline quartz never remains after the temporary molding is sintered to obtain a sintered quartz glass molding.

4. 发明专利

JP2000103630A PRODUCTION OF SINTERED QUARTZ GLASS MOLDED ARTICLE 失效
公开(公告)号：JP2000103630A
公开(公告)日：2000-04-11
申请号：JP28869298
申请日：1998-09-28
申请人： USHIO ELECTRIC INC
发明人： TAGAWA KOJI , TORIKAI TETSUYA
IPC分类号： C03B8/00 , C03B19/06 , C03B20/00 , C03B32/00 , C04B35/14 , C04B35/64
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a sintered quartz glass molded article, capable of giving the article having enhanced light transmittance by sintering a false quartz powder molded article consisting mainly of quartz glass in an atmosphere having a specific hydrogen pressure or larger and a specified temperature or higher. SOLUTION: A false quartz glass molded product is sintered in an atmosphere having a hydrogen pressure of >=10-2 Pa and a temperature of >=1,773K. When hydrogen gas is contained in the sintering atmosphere, SiO2 is reacted with hydrogen to produce SiO and SiH4, which are scattered from the quartz glass because of having high volatility. Since crystalline quartz such as cristobalite or β-quartz which is by-produced on the sintering treatment do not leave on the surface of the quartz glass, the transparent molded article having a high light transmission is obtained. When the atmosphere comprises pure hydrogen gas having a high hydrogen gas pressure, the reaction often excessively proceeds to largely consume SiO2. Thereby, when the atmosphere comprising a gas mixture of hydrogen gas with an inert gas is used as the sintering atmosphere and further when the sintering temperature is controlled, the consumption of the quartz glass due to the scattering of the SiO2, SiH4, etc., can be inhibited.

5. 发明专利

JP2003109537A FLASH DISCHARGE LAMP 审中-公开
公开(公告)号：JP2003109537A
公开(公告)日：2003-04-11
申请号：JP2001302672
申请日：2001-09-28
申请人： USHIO ELECTRIC INC
发明人： TORIKAI TETSUYA , MORIMOTO YUKIHIRO , IKEUCHI MITSURU
IPC分类号： H01J61/90 , H01J61/30 , H01J61/33
摘要： PROBLEM TO BE SOLVED: To provide a flash discharge lamp in which the light-emitting tube is not broken and the output of the irradiated light is not deteriorated at early stage even if lighted under the lighting condition of high load, and therefore a long service life can be obtained. SOLUTION: In the flash discharge lamp having a translucent tube formed of translucent ceramics, thermal expansion buffer dents are formed on the inner face of the light-emitting tube.

6. 发明专利

JP2000133202A LAMP 失效
公开(公告)号：JP2000133202A
公开(公告)日：2000-05-12
申请号：JP29861198
申请日：1998-10-20
申请人： USHIO ELECTRIC INC
发明人： TAGAWA KOJI , TORIKAI TETSUYA , MORINAGA KENJI
IPC分类号： H01J61/20 , H01J61/30 , H01J61/36
摘要： PROBLEM TO BE SOLVED: To provide a lamp that has a higher linear transmission factor and a longer service life and can emit light of wavelengths ranging widely between the visible and infrared regions from its arc tube portion. SOLUTION: A lamp envelope 30 comprises an arc tube portion 31 of a translucent sintered body including aluminum oxynitride, and sealed tube portions 32. The arc tube portion 31 is charged with halogen or halide. Each sealed tube portion 32 has a sealing member 37, which is made up of cermet or of a columned functiona1ly gradient material of a sintered body including an insulating inorganic material component and a conductive inorganic material component in such a mixing ratio as changes continuously or stepwise along the sealed tube portion 32 to make one end insulated and the other conductive.

7. 发明专利

JP2000086251A METHOD FOR SINTERING SINTERED QUARTZ GLASS MOLDING 失效
公开(公告)号：JP2000086251A
公开(公告)日：2000-03-28
申请号：JP28045498
申请日：1998-09-17
申请人： USHIO ELECTRIC INC
发明人： TAGAWA KOJI , MORINAGA KENJI , TORIKAI TETSUYA
IPC分类号： C03B8/00 , C03B19/06 , C03B20/00 , C03B32/00
摘要： PROBLEM TO BE SOLVED: To obtain a crystal-free dense transparent sintered quartz glass which does not get cloudy or crack even after long-time use at a high temperature by selecting a partial pressure of oxygen in a sintering atmosphere and a sintering temperature at which Moganite is formed in a sintering process and carrying out sintering. SOLUTION: A sintered quartz glass molding is sintered in an atmosphere at =1,530 deg.K sintering temperature. Microcrystals of cristobalite, β-quartz, etc., formed on the surface of the molding are not further formed and Moganite as one of polymorphisms of silica is formed. Since the formed Moganite is released from the surface at >=1,530 deg.K, the objective dense sintered quartz glass is obtd. A slurry is prepd. from silica powder of 1.5 μm average particle diameter, poured into a gypsum mold and dried to form a primary molding. This molding is heated in hydrogen at 1,273 deg.K for about 1 hr and the resultant temporarily sintered molding is sintered at a partial pressure of oxygen and a sintering temperature at which is formed. The sintered molding does not get cloudy or crack even after long-time use at >=973 deg.K.

8. 发明专利

JP2000072478A MATERIAL FOR SEALING QUARTS GLASS AND LAMP 失效
公开(公告)号：JP2000072478A
公开(公告)日：2000-03-07
申请号：JP24329798
申请日：1998-08-28
申请人： USHIO ELECTRIC INC
发明人： TORIKAI TETSUYA , MATSUNO HIROMITSU , TAGAWA KOJI , MORINAGA KENJI
IPC分类号： C03B20/00 , C03C8/24 , H01J61/36
摘要： PROBLEM TO BE SOLVED: To provide a quartz glass sealing material with which airtight sealing is surely attained without deforming quartz glass and high time efficiency may be obtd. in sealing work of the quartz glass, to obtain a sealing structure which is high in dimensional accuracy, makes it possible to obtain a desired shape and has high airtightness and to provide a lamp having a long service life. SOLUTION: A quartz sealing material contains at least silicon dioxide at a ratio of >=77 mol% and has a coefft. of linear expansion in a range of A±6×10-7 (1/K) when the coefft. of linear expansion of the quartz glass to be sealed is defined as A (1/K). The material has nature to be softened at temp. lower than the m.p. of the quartz glass. The lamp has a bulb 11 made of the quartz glass having a light emitting tube part 12 and end-sealing tube parts 13 successively disposed at this light emitting tube part 12 and end-sealing members 15 disposed at the end-sealing tube parts 13 of this bulb 11. The end- sealing tube parts 13 and end-sealing members 15 of the bulb 11 are sealed by the quartz glass sealing material.

9. 发明专利

JP2000037806A FUNCTIONALLY GRADIENT MATERIAL AND LAMP 失效
公开(公告)号：JP2000037806A
公开(公告)日：2000-02-08
申请号：JP20780798
申请日：1998-07-23
申请人： USHIO ELECTRIC INC
发明人： TORIKAI TETSUYA , MORINAGA KENJI , TAGAWA KOJI
IPC分类号： B32B5/14 , B32B7/02 , B32B15/00 , C09K3/10 , H01J61/36
摘要： PROBLEM TO BE SOLVED: To provide a functionally gradient material comprising an insulating inorg. substance component and a conductive inorg. substance component and reduced in the microscopic gap of thermal expansion characteristics in a structure and large in thermal durability and a lamp comprising the functionally gradient material. SOLUTION: A functionally gradient material is constituted by laminating first - third layers and the first layer L1 contains a first insulating inorg. substance component and a second insulating inorg. substance component having the coefficient of linear expansion between that of the first insulating inorg. substance component and that of a conductive inorg. substance component and the second layer L2 contains a second insulating inorg. substance component and the third layer L3 contains the second insulating inorg. substance component and the conductive inorg. substance component. The ratio of the first insulating inorg. substance component is reduced in the order of the first, second and third layers L1, L2, L3 and the ratio of the second insulating inorg. substance component is larger than the first and third layers L1, L3 in the second layer L2 and the ratio of the conductive inorg. substance component is increased in the order of the first, second and third layers L1, L2, L3. In a lamp, the seal member comprising the functionally gradient material is used in the constitution of a seal part.

10. 发明专利

JPH11317199A ELECTRIC INTRODUCTION BODY FOR VESSEL AND ITS MANUFACTURE 失效
公开(公告)号：JPH11317199A
公开(公告)日：1999-11-16
申请号：JP3883399
申请日：1999-02-17
申请人： USHIO ELECTRIC INC
发明人： TORIKAI TETSUYA , MORIMOTO YUKIHIRO , KUMADA TOYOHIKO , TAGAWA KOJI , KAI KENZO , SUGAWARA HIROSHI , NOZAWA SHIGENORI
IPC分类号： H01J9/24 , H01J61/36
摘要： PROBLEM TO BE SOLVED: To prevent leakage and removal of an electrode core rod by reliably fixing a blocking body of conductive inorganic material component and insulating inorganic material component and the electrode core rod by sintering. SOLUTION: As for this electric introduction body, in a blocking body 50 for a vessel which seals a block tube connected to an arc tube of the vessel and in which an electrode core rod 40 is inserted in a center hole of a functionally gradient material, a diffusion region, where a conductive inorganic material component of the blocking body, a metal component of the electrode core rod and a diffusion accelerator 60 to accelerate diffusion of the conductive inorganic material component of the blocking body and the metal component of the electrode core rod at a sintering temperature are mutually diffused, is formed in a boundary region of the blocking body and the electrode core rod, and the electrode core rod and the conductive inorganic material component of the blocking body are jointed.

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