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公开(公告)号：JPH10147091A
公开(公告)日：1998-06-02
申请号：JP30645196
申请日：1996-11-18
Applicant: TORAY INDUSTRIES
Inventor： OGATA TOMOHIKO , KAWAKITA SUSUMU , YOSHIDA FUMIO
Abstract: PROBLEM TO BE SOLVED: To improve satisfactory processability of giving precise sphericity in addition to wear resistance, corrosion resistance and mechanical strength, surface smoothness in the case of a product and writing characteristics by specifying surface roughness of a ceramic ball for a ballpoint pen. SOLUTION: The ceramic ball for a ballpoint pen is formed on its surface to have a width of 0.5μm or more, a depth of 0.2μm or more, a length of 10μm or more without a polishing damage within a region of 100μm , a centerline mean roughness of 4.5 to 10nm and maximum and minimum roughnesses of 50 to 100nm. On the surface of the ball, in an arbitrary range of 2,500m , polishing damages of a width of 0.5μm or more, a depth of 0.2μm or more and a length of 10μm or more are two or less. As the material of the ceramics adapted to the ball for the pen, suitable hardness and strength are required, and hence any of ceramics of alumina, silicon nitride and composite ceramic sintered material is suitable.
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公开(公告)号：JPH04329353A
公开(公告)日：1992-11-18
申请号：JP10085791
申请日：1991-05-02
Applicant: TORAY INDUSTRIES
Inventor： MATSUDA YOSHIO , KAWAKITA SUSUMU , KUWAJIMA HIROSHI
IPC: G01N27/416 , G01N27/411
Abstract: PURPOSE:To concurrently measure the carbon dioxide concentration and humidity in real time. CONSTITUTION:The first sensor element A containing a Na conducting solid electrolyte 1, a cathode electrode 2a formed in contact with one end section 1a of the electrolyte 1, an anode electrode 3a formed in contact with or apart from the other end section 1b of the electrolyte 1, and sodium carbonate 6 bridging the end section 1b of the electrolyte 1 and the anode electrode 3a is provided. The second sensor element B arranged in parallel with the element A and containing a Na conducting solid electrolyte 7, an O conducting solid electrolyte 8 connected with one end section 8a to one end section 7a of the electrolyte 7, a cathode electrode 2b formed in contact with the other end section 8b of the electrolyte 8, an anode electrode 3b formed in contact with or apart from the other end section 7b of the electrolyte 7, and the sodium carbonate 6 bridging the end section 7b of the electrolyte 7 and the anode electrode 3b is provided.
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公开(公告)号：JPH04324352A
公开(公告)日：1992-11-13
申请号：JP9422791
申请日：1991-04-24
Applicant: TORAY INDUSTRIES
Inventor： MATSUDA YOSHIO , KAWAKITA SUSUMU , KUWAJIMA HIROSHI
IPC: G01N27/416 , G01N27/406
Abstract: PURPOSE:To achieve higher accuracy, a smaller size and an inexpensive production as well as high stability of outputs. CONSTITUTION:A hunmidity sensor contains an alkali metal ion transmitting solid electrolyte 1, a detection electrode 2 formed in contact with one 1a of the alkali metal ion transmitting solid electrolyte 1, an oxygen ion transmitting solid electrolyte 3 arranged by joining one end 3a of the alkali metal ion transmitting solid electrolyte 1 to the other end 1b thereof and a reference electrode 4 formed in contact with the other end 3b of the oxygen ion transmitting solid electrolyte 3. The alkali metal ion transmitting solid electrolyte 1 detects a change in moisture and the oxygen ion transmitting solid electrolyte 3 does not detect the change in the moisure and hence, the combination of the both enables measurement of the moisture. This achieves high stability of outputs from a sensor and also does a higher accuracy, a smaller size and inexpensive production.
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Patent Agency Ranking
公开(公告)号：JP2001172090A
公开(公告)日：2001-06-26
申请号：JP2000309392
申请日：2000-10-10
Applicant: TORAY INDUSTRIES
Inventor： IWASHIMA MINORI , KAWAKITA SUSUMU , OGATA TOMOHIKO
Abstract: PROBLEM TO BE SOLVED: To provide ceramics having characteristics excellent in high compactness, high rigidity, low thermal expansion properties and high electroconductivity, and capable of being suitably used as a substrate for a component for producing a semiconductor device. SOLUTION: The ceramics with isolated cells each having an average diameter of =30 and (3) the absolute value of a coefficient of thermal expansion according to JIS R1,618 of
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公开(公告)号：JP2000026840A
公开(公告)日：2000-01-25
申请号：JP19423598
申请日：1998-07-09
Applicant: TORAY INDUSTRIES
Inventor： ONO MAMORU , KAWAKITA SUSUMU , YOSHIDA FUMIO
IPC: B24B37/00 , C01F17/00 , C09K3/14 , H01L21/304
Abstract: PROBLEM TO BE SOLVED: To provide an abrasive which, with respect to abrasion of a glass stock and a semiconductor device, contains no contaminants, provides an im proved abrasion speed as compared to a silica abrasive, while maintaining a surface processed state equal to that obtained using a silica abrasive, shows reduced adhesion of a abrasive grains on the abraded surface and can contribute to the improvement of productivity, by using a ceric oxide powder having spe cific properties. SOLUTION: This abrasive comprises a cerium oxide powder in which a number average particle diameter of a primary particle is 0.01-0.5 μm and the half-value width 2θ( deg.) of an angle 28.6 deg. (111 face) of diffraction in X-ray diffraction is 0.7-0.15 deg.. In order to prepare a slurry of the abrasive using the cerium oxide as an abrasive grain, the cerium oxide is preperably contained 0.5-30 wt.%, preferably 1-10 wt.% to a whole amount of the abradant. A stock powder of the cerium oxide can be prepared by various methods. In a hydrothermal method, a base such as ammonia water or the like is added to an aqueous solution of a cerium salt to neutralize the solution and a precipitation is deposited, followed by heating the resulting product in a pressure vessel to crystallize the product.
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公开(公告)号：JPH04355359A
公开(公告)日：1992-12-09
申请号：JP13112591
申请日：1991-06-03
Applicant: TORAY INDUSTRIES
Inventor： MATSUDA YOSHIO , KAWAKITA SUSUMU , JINNO SHIGERU
IPC: G01N27/416 , G01N27/406
Abstract: PURPOSE:To obtain an accurate and stable measured result enhanced in reliability by correcting the drift of the electromotive force generated in a carbon dioxide sensor during the continuous measurement of gas to be inspected. CONSTITUTION:A drift correcting circuit 14 correcting the drift of the electromotive force generated in a carbon dioxide sensor 10 during the measurement of gas to be inspected containing carbon dioxide is provided. By adjusting a variable resistor R so that a measuring current I3 satisfies I3=EXR4/R3R5, even when the concn. of carbon dioxide in the gas to be inspected changes and the generated electromotive force E of the sensor 10 changes in proportion thereto, the sensor is operated so that the current I1 flowing to a series resistor R1 always holds a condition I1=0 for preventing the accumulation of a sodium ion.
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公开(公告)号：JPS55110826A
公开(公告)日：1980-08-26
申请号：JP1790879
申请日：1979-02-20
Applicant: TORAY INDUSTRIES
Inventor： SUMITOMO SHINICHI , KAWAKITA SUSUMU , MASAKI YOSHIKI
Abstract: PURPOSE:To obtain reliable safety system for combustion to minimize malfunction by a method wherein a thermocouple is connected in series with the driving circuit of a fuel supply valve. CONSTITUTION:When incomplete combustion is occurred, the oxygen partial pressure of the waste gas in contact with the inner partition wall 9 is varied to change the electromotive force produced across the porous electrodes 10, 11. The electromotive force of the sensor 8 enters into a controller 14 by passing through the lead wires 12, 13. The controller 14 develops the voltage across the primary coil 15 of a transformer 5 when the electromotive force generated in sensor 8 exceeds the set value. The voltage developed across the primary coil 15 of the transformer 5 acts to cancel the electromotive force of the thermocouple 7, causing to release the solenoid valve 3 from excitation to stop fuel supply to the burner 1 by closing the solenoid valve 3.
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公开(公告)号：JPS52111792A
公开(公告)日：1977-09-19
申请号：JP2816276
申请日：1976-03-17
Applicant: TORAY INDUSTRIES
Inventor： YOSHIDA FUMIO , MATSUMOTO HISAHIRO , KUWASHIMA HIROSHI , NAGATO TAIJI , KAWAKITA SUSUMU
IPC: G01N27/409 , G01N27/30
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