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41. 发明专利

JPH0921777A ION CONCENTRATION MEASURING APPARATUS 失效
公开(公告)号：JPH0921777A
公开(公告)日：1997-01-21
申请号：JP19620995
申请日：1995-07-08
申请人： HORIBA LTD
发明人： IWAMOTO YOSHIKAZU , OKAWA HIROMI
IPC分类号： G01N27/26 , G01N27/28 , G01N27/403 , G01N27/416
摘要： PROBLEM TO BE SOLVED: To obtain an ion concentration measuring apparatus capable of surely protecting a measuring unit at the time of no measurement, automatically calibrating it, switching the measuring state or the non-measuring state by a one touch operation, and simply calibrating at need at the time of measurement. SOLUTION: A measuring unit holder 3 consisting a measuring unit 17 having an ion responder 7 and a reference electrode liquid junction unit 15 at the end is so provided in a cylindrical body 2 as to be axially movable and to be able to advance or retreat by a knocking mechanism 19 by a one touch operation, to liquid tightly contain a calibration liquid 22 between the body 2 and the holder 3, to allow the unit 17 to protrude out of the body 2 at the time of measuring, to contain the unit 17 in the body 2 at the time of no measurement, and to dip the unit 17 in the liquid 22 to be able to calibrate.

42. 发明专利

JP2003254925A DIAPHRAGM TYPE GAS SENSOR 审中-公开
公开(公告)号：JP2003254925A
公开(公告)日：2003-09-10
申请号：JP2002060521
申请日：2002-03-06
申请人： HORIBA LTD
发明人： IWAMOTO YOSHIKAZU
IPC分类号： G01N27/04
摘要： PROBLEM TO BE SOLVED: To provide a diaphragm type gas sensor for performing desired measurement accurately without requiring periodic zero calibration or span calibration. SOLUTION: In this diaphragm type gas sensor wherein a diaphragm 3 is provided on the end of a cylindrical sensor body 1 for storing internal liquid 5, pure water is used as the internal liquid 5, and an ion-exchange resin 7 is added to the internal liquid 5, and a conductivity sensor 6 is provided inside the sensor body 1, and the gas concentration is measured based on the conductivity change of the internal liquid 5 caused by ionization of the gas passing the diaphragm 3. COPYRIGHT: (C)2003,JPO

43. 发明专利

JP2003185623A NITRATE ION SELECTIVE ELECTRODE 审中-公开
公开(公告)号：JP2003185623A
公开(公告)日：2003-07-03
申请号：JP2001386620
申请日：2001-12-19
申请人： HORIBA LTD
发明人： IWAMOTO YOSHIKAZU , MIYAWAKI YOSHIO
IPC分类号： G01N27/416 , G01N27/333
摘要： PROBLEM TO BE SOLVED: To provide a nitrate ion selective electrode capable of eliminating the need for complicated pretreatments, being extremely easily operated for measurements such as the immersion of the electrode in a sample liquid such as non-industrial waste water, and highly accurately measuring the concentration of nitrate ions without being affected by chloride ions. SOLUTION: The nitrate ion selective electrode 1 is provided with a nitrate ion responsive film 3 at a tip part 2A of a body 2 and an internal liquid 5 and an internal electrode 6 inside the body 2. The nitrate ion responsive film 3 contains a chloride ion capturing agent 4. COPYRIGHT: (C)2003,JPO

44. 发明专利

JP2000055910A SOIL CONSTITUENT AUTOMATIC ANALYSIS DEVICE 失效
公开(公告)号：JP2000055910A
公开(公告)日：2000-02-25
申请号：JP22489598
申请日：1998-08-07
申请人： HORIBA LTD
发明人： IWAMOTO YOSHIKAZU , YAMAUCHI SUSUMU
IPC分类号： G01N33/24 , G01N27/06 , G01N27/416 , G01N35/02
摘要： PROBLEM TO BE SOLVED: To compose a device compactly and inexpensively by simplifying a mechanism for pretreatment when automatically analyzing the pH, each kind of ion, and conductivity of soil constituents. SOLUTION: An automatic analysis device is provided with a pallet 11 for accommodating a plurality of gathered soil samples, an ionization constituent extraction means I for extracting the ionization constituent of each soil sample, a pretreatment means M for pretreatment for measuring the pH of each soil sample, a measurement means S with a plurality of electrodes for measuring the pH, conductivity, and at least two types of ionization constituents of each soil sample, and a carrying device 6 for moving the pallet 11 at least along the X and Y axes and for carrying it to the positions of the ionization constituent extraction means I, the pretreatment means M, and the measurement means S, the sensor part of a plurality of electrodes for measuring the ionization constituents can be attached or detached, and the arbitrary ion seed of multiple constituents can be selected and analyzed.

45. 发明专利

JPH11337523A CAPILLARY ELECTROPHORESIS DEVICE 失效
公开(公告)号：JPH11337523A
公开(公告)日：1999-12-10
申请号：JP15834498
申请日：1998-05-22
申请人： HORIBA LTD
发明人： IWAMOTO YOSHIKAZU
IPC分类号： G01N27/447
摘要： PROBLEM TO BE SOLVED: To make a specified electrophoresis performable even by a low voltage by bundling a plurality of fine capillaries in the major part of the full length as capillary. SOLUTION: In a capillary part 9a, a plurality of fine capillries 10 of extremely small diameter are arranged in parallel with each other and bundled. A plurality of fine capillaries 10 made of silica glass and coated with melted silica on the inner circumferential face are inserted through an acid soluble glass tube, they are extendingly worked at a temperature of 650-700 deg.C, so that the respective fine capillaries 10 become capillaries of thin film having through holes of about 10-100 μm, they are diced into specified lengths, and the capillary part 9a of microchannel construction is formed. The effective sectional area of the capillary part 9a is equalized to that of a capillary parts 9b, 9c of single construction connected to this. When direct current voltage is impressed on electrodes 5, 6, buffer solution 3 in a buffer solution tank 1 is let flow into a capillary 9 and moved to a buffer solution tank 2 side. A sample introducing means 13 is operated to inject sample liquid 14.

46. 发明专利

JPH11258198A REFERENCE ELECTRODE 失效
公开(公告)号：JPH11258198A
公开(公告)日：1999-09-24
申请号：JP8252198
申请日：1998-03-14
申请人： HORIBA LTD
发明人： IWAMOTO YOSHIKAZU
IPC分类号： G01N27/401 , G01N27/30
摘要： PROBLEM TO BE SOLVED: To obtain a reference electrode which is compact, which is handled and stored easily, which can be used at a high temperature, whose impedance is low and which does not contain an internal liquid. SOLUTION: A plurality of capillaries 4 which are composed of an ion-conductive silica-based sodium-based or lithium-based glass are bundled. Sides, on one side, of the bundled capillaries 4 are connected electrically by a conductor 5. A lead wire 6 for reference-potential derivation is connected to the conductor 5. Thereby, a reference electrode which does not contain an internal liquid is constituted. When the reference electrode which is constituted in this manner is immersed in a sample, the sample creeps into the capillaries 4 and into gaps between the capillaries 4 due to a capillary phenomenon. When the capillaries 4 are composed of the sodium-based glass, hydration layers which are rich in Na with reference to bulk H are formed on sample liquid contact faces on inner faces and outer faces of the capillaries 4. When the capillaries 4 are composed of the lithium-based glass, hydration layers which are rich in Li with reference to bulk H are formed on sample liquid contact faces on the inner faces and the outer faces of the capillaries 4. An electromotive force is generated in the hydration layers, and it is taken out to the lead wire 6 as a reference potential.

47. 发明专利

JPH1082759A COMPOSITE ELECTRODE BOTH FOR SUCTION AND CIRCULATION MEASUREMENTS 失效
公开(公告)号：JPH1082759A
公开(公告)日：1998-03-31
申请号：JP25560196
申请日：1996-09-05
申请人： HORIBA LTD
发明人： HORIBA MASAO , TAKECHI SHINJI , IWAMOTO YOSHIKAZU , BABA TOSHIYUKI
IPC分类号： G01N27/28 , G01N27/403
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive composite electrode which can easily perform both circulation measurement and suction measurement. SOLUTION: A double tube 4 comprising an inner tube 1 forming a flow path of sample liquid and an outer tube 2 branched from the middle of the inner tube 1 for surrounding the inner tube 1 so that a ring-like space 3 is formed between the inner tube 1 and it is integrally formed of glass, a response film 5 is formed on a part of the inner tube 1 surrounded by the outer tube 2, the space 3 between the inner tube 1 and the outer tube 2 is filled with glass electrode internal liquid 6, and an inner electrode 7 is provided at a position corresponding to the response film 5 in the glass electrode internal liquid 6. On the other hand, the double tube 4 is surrounded by an outer cylinder 8 so that a ring-like gap 9 is formed between the double tube 4 and it, the gap 9 is filled with reference electrode internal liquid 10, a liquid junction 11 is provided on a part of the inner tube 1 in contact with the reference electrode internal liquid 10, and a reference electrode inner pole 12 is provided in the reference electrode internal liquid 10 corresponding to the liquid junction 11.

48. 发明专利

JPH08114570A COMPOSITE ELECTRODE FOR ION CONCENTRATION MEASUREMENT 失效
公开(公告)号：JPH08114570A
公开(公告)日：1996-05-07
申请号：JP27598894
申请日：1994-10-15
申请人： HORIBA LTD
发明人： IWAMOTO YOSHIKAZU
IPC分类号： G01N27/30 , G01N27/403 , G01N27/49
摘要： PURPOSE: To provide a composite electrode for ion concentration measurement by which plural ions are easily measured by just replacing a chip type ion electrode against one electrode support body. CONSTITUTION: An electrode support body is composed of an outer tube and an inner body contained in the outer tube so as to form a measurement electrode 29 at the end portion of the inside body, and a double junction type comparison electrode 40 is composed of first inside liquid 36, second inside liquid 39, and an inside electrode 37 between the outer tube and the inner body so as to form a composite electrode for ion concentration measurement. Therein, an electrode socket 17 is formed in the inner body, so that a chip type ion electrode 28 is mounted in the electrode socket 17 to be free in attaching in and detaching from, and the second inside liquid 39 can be taken out by moving the outer tube downward.

49. 发明专利

JPH03215733A CONDUCTOMETER AND PRODUCTION OF MATERIAL FOR ITS ELECTRODE 失效
公开(公告)号：JPH03215733A
公开(公告)日：1991-09-20
申请号：JP1092390
申请日：1990-01-19
申请人： HORIBA LTD
发明人： IWAMOTO YOSHIKAZU
IPC分类号： G01R27/22 , C25D5/28 , G01N27/06 , G01N27/07
摘要： PURPOSE:To measure the resistance value of a soln. with high precision and to accurately measure the conductivity by using titanium plated with platinum black as the material for the electrode and increasing the capacitor component resulting from an increase in the surface area of the electrode. CONSTITUTION:At least a couple of electrodes 3 are provided to an electrode supporting member 1 at an appropriate distance from each other. Since titanium plated with platinum black is used as the material for the electrode 3, the capacitor component resulting from an increase in the surface area of the electrode is increased. Consequently, polarization causing a measuring error is drastically reduced in the measurement of a high-conductivity soln., etc., the resistance value of the soln. is measured with good precision, and the conductivity inversely related to the resistance value is also accurately measured. When titanium low in cost and easy to work is plated with platinum black, the surface of titanium is pretreated, previous electrolysis is applied, hence the platinum grains are deposited on the rough surface, and a rigid platinum black plating is formed.

50. 发明专利

JPS5494095A APPARATUS FOR MEASURING CADMIUM ION CONCENTRATION 失效
公开(公告)号：JPS5494095A
公开(公告)日：1979-07-25
申请号：JP15807077
申请日：1977-12-31
申请人： HORIBA LTD
发明人： IWAMOTO YOSHIKAZU , AOUMI TAKASHI
IPC分类号： G01N27/416 , G01N27/26

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