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1. 发明专利

JP2003215027A CURVED-SURFACE REFLECTED-LIGHT SENSOR 审中-公开
公开(公告)号：JP2003215027A
公开(公告)日：2003-07-30
申请号：JP2002009644
申请日：2002-01-18
申请人： JAPAN SCIENCE & TECH CORP , KANAGAWA KAGAKU GIJUTSU AKAD , NIPPON TELEGRAPH & TELEPHONE , NTT ADVANCED TECH KK
发明人： SUZUKI KOJI , KURIHARA KAZUYOSHI , IWASAKI GEN , HORIUCHI TSUTOMU , NIWA OSAMU , HIDA TATSUYA , TABEI HISAO
IPC分类号： G01N21/27
摘要： PROBLEM TO BE SOLVED: To provide a reflected-light sensor capable of solving conventional problems and being inexpensively manufactured with having no mechanical movable parts. SOLUTION: The curved-surface reflected-light sensor is provided with a sensor chip having a reflecting surface, a light source, and an optical detector and detects the difference of the intensity of reflected light which depends on the angle of incidence of light from the light source to the reflecting surface. The reflecting surface of the sensor chip is constituted of a curved surface. The optical detector is constituted in such a way as to measure the reflected light at different locations and measure the intensity of reflection at an angle of incidence, which is different according to a location for measuring reflected light. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2002162345A OPTICAL WAVEGUIDE SPR PHENOMENON MEASURING CHIP WITH SPECTROSCOPIC FUNCTION AND SPR PHENOMENON MEASURING DEVICE 失效
公开(公告)号：JP2002162345A
公开(公告)日：2002-06-07
申请号：JP2000355353
申请日：2000-11-22
申请人： NIPPON TELEGRAPH & TELEPHONE , NTT ADVANCED TECH KK
发明人： IWASAKI GEN , NIWA OSAMU , HORIUCHI TSUTOMU , HIDA TATSUYA , TABEI HISAO , IMAMURA SABURO
IPC分类号： G01J3/18 , G01N21/27 , G02B6/12
摘要： PROBLEM TO BE SOLVED: To provide a compact SPR phenomenon measuring chip and a SPR phenomenon measuring device which can measure the wavelength spectrum of SPR phenomenon without big spectroscope by utilizing profitable light source. SOLUTION: This optical waveguide SPR phenomenon measuring chip has SPR phenomenon measuring portion which has metalic thin film 16 directly connecting optical waveguide and core of optical waveguide, and spectroscopic function 19, 20, and 21 which have the function to separate incidence light to SPR phenomenon measuring portion and outputting light from SPR phenomenon measuring chip. SPR phenomenon measuring device has SPR phenomenon measuring chip, or light measuring device 22 which measures the outputting light from spectroscopic function. We can get compact SPR phenomenon measuring chip and SPR phenomenon measuring device without special spectroscope device by letting SPR phenomenon measuring chip accommodate optical waveguide and letting optical waveguide have spectroscopic function.

3. 发明专利

JPH1090214A ONLINE BIOSENSOR 失效
公开(公告)号：JPH1090214A
公开(公告)日：1998-04-10
申请号：JP26230796
申请日：1996-09-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NIWA OSAMU , TORIMITSU KEIICHI , HORIUCHI TSUTOMU , MORITA MASAO , KURITA RIYOUJI
IPC分类号： G01N27/327 , C12Q1/26 , G01N27/416
摘要： PROBLEM TO BE SOLVED: To measure amino acid or γ-aminobutyric acid (GABA) in real time by containing γ-ketoglutarate in a moving bed electrolytic solution. SOLUTION: This biosensor has a pre-column in which glutamic oxidase and an enzyme decomposing hydrogen peroxide are immobilized, and an electrode modified by at least gabase/glutamic oxidase, and γ-ketoglutarate is contained in a moving bed electrolytic solution. A column filled with beads having glutamic oxidase and catalase (or peroxidase) immobilized thereon is put before the electrode, whereby glutamic acid is oxidized, and the hydrogen peroxide generated thereby can be also decomposed by the catalase (peroxidase). The effect of the glutamic acid originally present in the outside of a cell is removed by these reaction, and a measurement corresponding to the quantity of GABA can be performed online.

4. 发明专利

JPH1038844A ONLINE BIOSENSOR 失效
公开(公告)号：JPH1038844A
公开(公告)日：1998-02-13
申请号：JP21494696
申请日：1996-07-29
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NIWA OSAMU , TORIMITSU KEIICHI , HORIUCHI TSUTOMU , MORITA MASAO , TABEI HISAO
IPC分类号： G01N27/327 , C12M1/34 , C12Q1/25 , G01N27/416
摘要： PROBLEM TO BE SOLVED: To attain quantitative measurement in a small area by incorporating a sampling portion of a capillary, an oxygen reactor, and an electrochemical detector in a flow cell and pumping them by a syringe pump. SOLUTION: A glass capillary of 0.7mm in inner diameter is fused and extended, a sampling portion of approx. 15μ in tip inner diameter is prepared, and a teflon tube of 100 micrometers in inner diameter is plugged from a non- extension side and sealed by epoxy resin. That tube is introduced into a radial flow type electrochemical detector through a fine platinum tube in approx. 3m. On a surface of a grassy carbon electrode of approx. 6mm in diameter, Os polymer containing Western horseradish per-oxydase, enzyme glutamic acid oxide, and bovine serum albumin cross-linked with glutaric aldehyde are qualified by the Os polymer. An output side of the flow cell is connected to a syringe pump through a teflon tube and absorbed. The sampling portion is fined to units of micrometer and is absorbed to measure in a small area.

5. 发明专利

JPH03246460A ELECTROCHEMICAL DETECTOR 失效
公开(公告)号：JPH03246460A
公开(公告)日：1991-11-01
申请号：JP4256790
申请日：1990-02-26
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HORIUCHI TSUTOMU , NIWA OSAMU , MORITA MASAO , TABEI HISAO
IPC分类号： G01N27/30 , G01N27/416
摘要： PURPOSE:To execute electrochemical current amplification with an ordinary potentiostat by disposing plural working electrodes apart a slight spacing and bringing terminal of at least one working electrode among these electrodes into contact with a soln. to be measured in a place sufficiently apart from the other electrodes. CONSTITUTION:An electromotive force is generated in the electrode (working electrode 41), in which the active species generated by an electrochemical reaction is not connected to the potentiostate, by the concn. distribution formed on the electrode 41 and the reverse electrochemical reaction takes place across the electrode 41 for negating the electromotive force so that a current flows in the electrode 41. A redox cycle 43 in which the active species generated on the electrode (working electrode 42) connected to the potentiostat are promptly reduced by the edge of the electrode 41 near the same between two pieces of the electrodes and return to the electrode 42 again to effect the electrochemical reaction is, therefore, created and the current flows.

6. 发明专利

JPH03238350A ELECTROCHEMICAL DETECTOR AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH03238350A
公开(公告)日：1991-10-24
申请号：JP3396590
申请日：1990-02-16
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MORITA MASAO , HORIUCHI TSUTOMU , NIWA OSAMU , TABEI HISAO
IPC分类号： G01N27/30 , G01N27/416
摘要： PURPOSE:To make it possible to perform the same measurement as in the case wherein a dual potentiostat is used by separating each pattern-state thin film electrode on an insulating substrate at a minute interval, and conducting one electrode to an electrode that is separated from a detecting part with a minute electrode cell. CONSTITUTION:One working electrode is connected to an ordinary potentiostat. The other electrode which is separated at a minute interval is connected to an electrode which is separated from a detecting part. An object material is oxidized or reduced with the working electrode which is connected to the potentiostat. Then the material is diffused to the other working electrode which is separated at a minute interval. However, the oxidized or reduced object material is not diffused to the electrode which is located at the remote position. A potential is generated across the working electrodes based on the concentration difference between the electrodes. Thus, the object material which is oxidized or reduced with the working electrode that is connected to the potentiostat is reduced or oxidized with the other working electrode and returned to the original material. Namely, redox cycling occurs, and high sensitivity can be achieved.

7. 发明专利

JPH01111347A ANALYTICAL APPARATUS OF TUNNEL DEVICE 失效
公开(公告)号：JPH01111347A
公开(公告)日：1989-04-28
申请号：JP26984287
申请日：1987-10-26
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HORIUCHI TSUTOMU , EBISAWA FUMIHIRO , TABEI HISAO
IPC分类号： H01L49/02 , G01R31/26 , H01L21/66 , H01L29/88 , H01L39/24
摘要： PURPOSE:To obtain an absolute value of a molecular vibration peak on the basis of an inelastic electron tunnel spectrum by a method wherein a comprehensive tunnel characteristic is analyzed only by measuring a current-voltage characteristic of a tunnel junction. CONSTITUTION:An I-V characteristic of a tunnel junction is measured with high accuracy by using a power supply 3, a voltmeter 5 and an ampere meter 4 of high accuracy; its measured value is taken into a computer 6 as a data; an accurate potential barrier shape is calculated by using the computer 6 on the basis of the data; it is judged whether a tunnel insulating layer is good or bad. Then, a voltage interval is made an equal interval by means of a spline interpolation of third order of the data by using the computer 6; after that, while a smoothing differentiation method of second order and third order of an electric current with reference to a voltage is applied, a differential operation of second order is executed. By this setup, it is possible to obtain an IET spectrum (an inelastic electron tunnel spectrum) directly from a current-voltage characteristic and to find an absolute value of a molecular vibration peak.

8. 发明专利

JP2001174406A OPTICAL PART FOR PHOTOCHEMICAL DETECTOR, MULTI-OPTICAL PART FOR PHOTOCHEMICAL DETECTOR, PHOTOCHEMICAL DETECTOR USING THE OPTICAL PART OR THE MULTI-OPTICAL PART FOR PHOTOCHEMICAL DETECTOR, AND PHOTOCHEMICAL DETECTION METHOD, AND MANUFACTURING METHOD OF OPTICAL PART FOR PHOTOCHEMICAL DETECTOR 失效
公开(公告)号：JP2001174406A
公开(公告)日：2001-06-29
申请号：JP35731099
申请日：1999-12-16
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HORIUCHI TSUTOMU , UENO YUKO , NIWA OSAMU
IPC分类号： G01N21/64 , G01N21/17 , G01N21/27 , G01N21/75 , G01N27/447 , G02B6/00
摘要： PROBLEM TO BE SOLVED: To provide a novel optical part for a photochemical detector with minute capacity capable of absorbing light or emitting fluoresence with high efficiency, a photochemical detector, a method for manufacturing the same and a photochemical detection method. SOLUTION: The optical part for photochemical detector is constituted so that filter members each of which is formed by arranging a multilayered film, wherein two kinds of light-transmissible membranes A, B having an optical thickness being integral multiple of 1/4 of a center detection wavelength and different in refractive index are alternately laminated, to the end surface of a light-transmissible member 11 are arranged through a gap 12 being the half of the center detection wavelength and receiving a sample to be measured so that the end surfaces to which the multilayered films are arranged are opposed to each other. The photochemical detector using the optical part, photochemical detection method and the method of manufacturing the optical part for the photochemical detector of provided.

9. 发明专利

JP2001103994A GLUTAMIC ACID SENSOR AND METHOD FOR PRODUCING THE SAME 失效
公开(公告)号：JP2001103994A
公开(公告)日：2001-04-17
申请号：JP29075499
申请日：1999-10-13
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HAYASHI KATSUYOSHI , NIWA OSAMU , HORIUCHI TSUTOMU , TORIMITSU KEIICHI , KURITA RIYOUJI
IPC分类号： C12Q1/00 , C12Q1/26
摘要： PROBLEM TO BE SOLVED: To obtain a glutamic acid sensor capable of measuring the concentration of a very small amount of glutamic acid being a neurotransmitter contained in a sample solution and to provide a method for producing the glutamic acid sensor. SOLUTION: This glutamic acid sensor has an action electrode 5 modified with a membrane containing a glutamate oxidase treated with a glutaminase inhibitor at a part of a flow channel flowing the sample solution and a cell 3 for preelectrolysis at the upstream part of the action electrode 5. The shape of the flow channel is a thin layer shape along the electrode face of the electrode at a part to be brought into contact with the electrode face of the electrode for the preelectrolysis in the cell 3 for preelectrolysis. The electrode face is modified with a material to promote an electrode reaction.

10. 发明专利

JP2000266717A HISTAMINE MEASURING MICROELECTRODE AND HISTAMINE MEASURING SENSOR 失效
公开(公告)号：JP2000266717A
公开(公告)日：2000-09-29
申请号：JP7657899
申请日：1999-03-19
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NIWA OSAMU , HORIUCHI TSUTOMU , TORIMITSU KEIICHI , KURITA RIYOUJI , MAEYAMA KAZUTAKA , TANIZAWA KATSUYUKI
IPC分类号： C12Q1/26 , G01N27/28 , G01N27/327 , G01N27/416
摘要： PROBLEM TO BE SOLVED: To apply to a minute amount of sample and excellently perform excellently selective measurement with high precision to a low concentration by forming a film comprising a material having a characteristic reducing hydrogen peroxide as a reaction product from a reaction between a histamine oxidase and its substrate via an electrode reaction on an electrode. SOLUTION: As a minute electrode material, a thin film electrode 11 or a rod electrode 12 is used. In formation of the thin film electrode 11, a thin film forming method based on photolithography, spattering, and deposition on a base board can be used, and an etching method may be also used if necessary. On the electrode 11, a film 13 having a characteristic for reducing hydrogen peroxide and receiving an electron from the electrode, for example, a film comprising peroxidase reducing hydrogen peroxide in a conductive polymer is formed. If a sample solution contains L-ascorbic acid, an L-ascorbic acid oxidase is included in the film, or the uppermost layer is modified with an anionic polymer film 15, so that influence of a disturbing substance is eliminated by means of electrostatic repulsive action of the film.

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