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11. 发明专利

JP2000039417A DIAPHRAGM-TYPE ELECTROCHEMICAL GAS DETECTOR 失效
公开(公告)号：JP2000039417A
公开(公告)日：2000-02-08
申请号：JP20808198
申请日：1998-07-23
申请人： RIKEN KEIKI KK
发明人： NAKANO NOBUO , TAKEUCHI TOMOKAZU , AKAMATSU AKIRA
IPC分类号： G01N27/404
摘要： PROBLEM TO BE SOLVED: To suppress the aging of detection sensitivity, viscosity, and the like by accommodating the mixture of each specific sulfuric acid and polyethylene glycol as an electrolyte in a cell with a window being sealed by a gas- permeability diaphragm. SOLUTION: In a cell container 1, a diaphragm 7 where a film 9 that becomes an operation electrode by reactive sputtering or the like is extended in a through hole 3, and a diaphragm 11 where a film 10 made of a substance suited for a counter electrode is formed is provided in a through hole 4. Polyethyleneglycol is mixed to the following sulfuric acid by 1.0-3.5 wt.% for preparation. In this case, by using polyethyleneglycol with at least 4,000,000 molecular weight that shows a viscosity being bonded to the films 9 and 10 and cannot flow down, an electrolyte 2 can have high detection sensitivity and small economical change. Also, by using a sulfuric acid that is at least 10 prescription, the decomposition of polyethyleneglycol due to sulfuric acid, namely the reduction in viscosity, can be prevented.

12. 发明专利

JPH1194780A WORK FUNCTION MEASURING METHOD, APPARATUS THEREFOR AND SAMPLE HOLDER 失效
公开(公告)号：JPH1194780A
公开(公告)日：1999-04-09
申请号：JP27358297
申请日：1997-09-19
申请人： RIKEN KEIKI KK
发明人： NAKAJIMA YOSHIYUKI , NAKAMURA YUKIO
IPC分类号： G01N23/227 , G01N27/60
摘要： PROBLEM TO BE SOLVED: To accurately measure work function regardless of material quality without being affected by a surface state. SOLUTION: A first process wherein the surface of a movable electrode 12 is irradiated with exciting light Lλ, while a wavelength is successively scanned to calculate light energy at a time of the discharge of photoelectrons from the surface of the movable electrode, a second process vibrating the movable electrode 12 in constant frequency so as to allow the same to advance and retreat with respect to a sample S (a) to measure the potential difference between the movable electrode 12 and the sample S, and a third process calculating the value wherein the light energy calculated in the previous process is added to this potential difference (b), are provided.

13. 发明专利

JP2779272B2 失效
公开(公告)号：JP2779272B2
公开(公告)日：1998-07-23
申请号：JP8084691
申请日：1991-03-19
申请人： RIKEN KEIKI KK
发明人： ISHICHI TOORU , UCHIKOSHI SHOICHI
IPC分类号： G01N27/416

14. 发明专利

JP2655533B2 失效
公开(公告)号：JP2655533B2
公开(公告)日：1997-09-24
申请号：JP13681788
申请日：1988-06-02
申请人： RIKEN KEIKI KK , GASU TETSUKU INC
发明人： UCHIKOSHI RYOZO , YUUJIN JEI BURANCHAADO JUNYA
IPC分类号： G01R31/02 , G01N27/26 , G01N27/416

15. 发明专利

JP2557323B2 失效
公开(公告)号：JP2557323B2
公开(公告)日：1996-11-27
申请号：JP19778887
申请日：1987-08-07
申请人： RIKEN KEIKI KK
发明人： ISHICHI TOORU
IPC分类号： G01N27/416 , G01N33/38

16. 发明专利

JP2509886B2 失效
公开(公告)号：JP2509886B2
公开(公告)日：1996-06-26
申请号：JP29707987
申请日：1987-11-24
申请人： RIKEN KEIKI KK , RIKAGAKU KENKYUSHO
发明人： SHIROHASHI SUKENORI , UDA MASAYUKI
IPC分类号： G01N21/00 , G01N23/227 , H01L21/66

17. 发明专利

JPH0783911A BASIC GAS DETECTION TAPE 失效
公开(公告)号：JPH0783911A
公开(公告)日：1995-03-31
申请号：JP27893893
申请日：1993-09-13
申请人： RIKEN KEIKI KK
发明人： NAKANO NOBUO
IPC分类号： G01N21/78 , G01N31/22
摘要： PURPOSE:To provide a tape which can detected basic gas without being affected by acid gas, etc. CONSTITUTION:Fluoresceine dye and strong acid organic acid are carried by a leaf body carrier along with a moisture-preservation agent. In normal state, colored fluoresceine dye exists in the paper leaf in discolored state due to the operation of strong acid organic acid. In this state, when basic gas is dissolved by the water of moisture-preservation agent for displacing the paper leaf to alkali side, the fluoresceine dye develops color corresponding its hydrogen ion concentration. By measuring the degree of color development, the concentration of basic gas can be determined.

18. 发明专利

JPH06195576A SEMICONDUCTOR MATERIAL GAS DETECTING DEVICE 失效
公开(公告)号：JPH06195576A
公开(公告)日：1994-07-15
申请号：JP35927492
申请日：1992-12-25
申请人： RIKEN KEIKI KK
发明人： IWASAKI SHINICHIRO , UCHIKOSHI RYOZO
IPC分类号： G01M3/04 , G01M3/02 , G01N27/64 , G08B21/00 , G08B21/16
摘要： PURPOSE:To simplify calibrating operation for a tetraethoxy silane measuring instrument by setting heating temperature so that the output of a particle detecting means using silane matches the output of a particle detecting means using tetraethoxy silane of the same concentration with the silane. CONSTITUTION:When the calibrating operation is needed, the silane having an inspection reference concentration value is injected into a thermal decomposing furnace 2 and then the injected gaseous silane is completely thermally decomposed through the operation of the furnace temperature of the thermal decomposing furnace 2 to generate particulates as many as particles generated when the tetraethoxy silane of the same concentration with the injected silane are thermally decomposed. Consequently, an ionization type particle detector 4 outputs a level signal matching the tetraethoxy silane of the same amount and concentration with the currently injected silane, so adjustments are so made as to equalize an indication value to the concentration value of silane standard gas, thereby completing the calibration with the same precision with calibration using the tetraethoxy silane of the same concentration.

19. 发明专利

JPH06186166A TAPE FOR DETECTING SILANE GAS 失效
公开(公告)号：JPH06186166A
公开(公告)日：1994-07-08
申请号：JP35551292
申请日：1992-12-18
申请人： RIKEN KEIKI KK
发明人： NAKANO NOBUO , YAMAMOTO AKIHIRO
IPC分类号： G01N21/78 , G01N31/00 , G01N31/22
摘要： PURPOSE:To provide a tape for detecting silane having high measuring sensitivity without decreasing an original mechanical strength of a reagent carrier. CONSTITUTION:Silver perchlorate, silver paratoluenesulfonate as coloring reagent and paratoluenesulfonic acid as light-resisting accelerator are carried in a state of dissolution in glycol by a porous cellulose tape containing gas adsorbent such as silica fine powder, etc., among fibers. When the tape is exposed to silane in sampling gas, the silane is dissolved in the glycol to rapidly reduce the silver perchlorate and the silver paratoluenesulfonate existing therein to generate colloidal silver, thereby generating reaction trace. Since the colloidal silver is generated in proportional to a concentration of the silane, an optical concentration of the trace is measured to find a concentration of the silane.

20. 发明专利

JPH0658906A ELECTROCHEMICAL GAS DETECTOR 失效
公开(公告)号：JPH0658906A
公开(公告)日：1994-03-04
申请号：JP36003392
申请日：1992-12-28
申请人： RIKEN KEIKI KK
发明人： NAKANO NOBUO , KUWANO NOBUKUNI , KOYANO JUNICHI
IPC分类号： G01N27/404 , G01N27/416
摘要： PURPOSE:To flow an electrolyte to the electrode surface without using a string-shaped liquid-guiding member through the electrode. CONSTITUTION:In an electrochemical gas detector for detecting the concentration of a gas to be detected as an electrolytic current by allowing at least an action pole and an opposite pole to contact an electrolyte, a water-containing plate 5 is allowed to contact an electrode surface 2b of an electrode boy 2 which becomes the action pole and is housed in a container 1 by enclosing in sandwich with the water-containing plates 4 and 5 for contacting at both front and rear surfaces of the electrode body 3 which becomes the opposite pole and the periphery part. An electrolyte is sucked via the water-containing plate 4 and the electrolyte is routed to the water-containing plate 5 which exists between the electrode bodies 2 and 3 from the periphery part of the water-containing plate 4, thus causing the electrode surfaces 2b and 3b of both electrode bodies 2 and 3 to contact the electrolyte and generating art electrolytic current corresponding to the concentration of the gas. Then, when the electrolyte is included in the water-containing plates 4 and 5, gas can be detected and the electrolyte in the container can be reduced as much as possible, thus absorbing the increase and decrease in the electrolyte due to moisture at a space which is generated in the container.

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