GB2132348B - Method and apparatus for determining the presence of oxygen - Google Patents

Method and apparatus for determining the presence of oxygen

Info

Publication number
GB2132348B
GB2132348B GB08333822A GB8333822A GB2132348B GB 2132348 B GB2132348 B GB 2132348B GB 08333822 A GB08333822 A GB 08333822A GB 8333822 A GB8333822 A GB 8333822A GB 2132348 B GB2132348 B GB 2132348B
Authority
GB
United Kingdom
Prior art keywords
oxygen
determining
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB08333822A
Other versions
GB8333822D0 (en
GB2132348A (en
Inventor
John Roger Bacon
James Nicholas Demas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Virginia UVA
University of Virginia Patent Foundation
Original Assignee
University of Virginia UVA
University of Virginia Patent Foundation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by University of Virginia UVA, University of Virginia Patent Foundation filed Critical University of Virginia UVA
Publication of GB8333822D0 publication Critical patent/GB8333822D0/en
Publication of GB2132348A publication Critical patent/GB2132348A/en
Application granted granted Critical
Publication of GB2132348B publication Critical patent/GB2132348B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
    • G01N2021/6432—Quenching
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N2021/7769—Measurement method of reaction-produced change in sensor
    • G01N2021/7786—Fluorescence

Landscapes

  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
GB08333822A 1982-12-23 1983-12-20 Method and apparatus for determining the presence of oxygen Expired GB2132348B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US45265982A 1982-12-23 1982-12-23

Publications (3)

Publication Number Publication Date
GB8333822D0 GB8333822D0 (en) 1984-02-01
GB2132348A GB2132348A (en) 1984-07-04
GB2132348B true GB2132348B (en) 1987-05-28

Family

ID=23797370

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08333822A Expired GB2132348B (en) 1982-12-23 1983-12-20 Method and apparatus for determining the presence of oxygen

Country Status (5)

Country Link
JP (1) JPH0643963B2 (en)
CA (1) CA1261717A (en)
DE (1) DE3346810C2 (en)
FR (1) FR2538550B1 (en)
GB (1) GB2132348B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7368153B2 (en) 2002-12-06 2008-05-06 Cryovac, Inc. Oxygen detection system for a rigid container
WO2020027675A1 (en) 2018-07-30 2020-02-06 Instituto Superior Técnico Non-metallic luminescent oxygen sensors for aircraft fuel tanks

Families Citing this family (102)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0190830A3 (en) * 1985-02-04 1988-04-27 Gould Inc. Single optical fiber sensor for measuring the partial pressure of oxygen
US4752115A (en) * 1985-02-07 1988-06-21 Spectramed, Inc. Optical sensor for monitoring the partial pressure of oxygen
US5043286A (en) * 1985-07-03 1991-08-27 Abbott Laboratories Method and sensor for measuring oxygen concentration
US4810655A (en) * 1985-07-03 1989-03-07 Abbott Laboratories Method for measuring oxygen concentration
EP0227815A4 (en) * 1985-07-03 1988-06-23 Internat Biomedics Inc Methods of measuring oxygen concentration.
AT390145B (en) * 1986-01-27 1990-03-26 Avl Verbrennungskraft Messtech METHOD FOR DETERMINING THE CONCENTRATION OF SUBSTANCES, IN PARTICULAR OXYGEN
US5006314A (en) * 1986-04-18 1991-04-09 Minnesota Mining And Manufacturing Company Sensor and method for sensing the concentration of a component in a medium
US4849172A (en) * 1986-04-18 1989-07-18 Minnesota Mining And Manufacturing Company Optical sensor
US4895156A (en) * 1986-07-02 1990-01-23 Schulze John E Sensor system using fluorometric decay measurements
JPS6312942A (en) * 1986-07-03 1988-01-20 Rikagaku Kenkyusho Probe for measuring oxygen concentration
US5196347A (en) * 1986-07-03 1993-03-23 Terumo Kabushiki Kaisha Method for measuring oxygen concentration
US4861727A (en) * 1986-09-08 1989-08-29 C. R. Bard, Inc. Luminescent oxygen sensor based on a lanthanide complex
US5012809A (en) * 1986-10-10 1991-05-07 Shulze John E Fiber optic catheter system with fluorometric sensor and integral flexure compensation
US5120510A (en) * 1986-10-10 1992-06-09 Minnesota Mining And Manufacturing Company Sensor and method for sensing the concentration of a component in a medium
US5462052A (en) * 1987-01-30 1995-10-31 Minnesota Mining And Manufacturing Co. Apparatus and method for use in measuring a compositional parameter of blood
EP0344313B1 (en) * 1987-02-20 1994-05-11 Terumo Kabushiki Kaisha Probe for measuring concentration of dissolved gas
US5070158A (en) * 1987-03-12 1991-12-03 Hewlett-Packard Company Covalently labeled siloxane polymers
AT389590B (en) * 1987-05-27 1989-12-27 Avl Verbrennungskraft Messtech METHOD FOR THE CONTINUOUS, QUANTITATIVE DETERMINATION OF SULFUR DIOXIDE AND ARRANGEMENT FOR IMPLEMENTING THE METHOD
JPS6463842A (en) * 1987-09-03 1989-03-09 Terumo Corp Method and apparatus for measuring concentration of optical material
US5100709A (en) * 1987-10-09 1992-03-31 Tredegar Industries, Inc. Multilayer film coating for rigid, smooth surfaces
US4947850A (en) * 1988-03-11 1990-08-14 Trustees Of The University Of Pennsylvania Method and apparatus for imaging an internal body portion of a host animal
AT393326B (en) * 1988-08-02 1991-09-25 Avl Verbrennungskraft Messtech INDICATOR SUBSTANCE FOR A MEASURING DEVICE FOR THE OPTICAL DETERMINATION OF INTERESTING PARAMETERS OF A SAMPLE AND MEASURING PROCEDURE THEREFOR
US5049358A (en) * 1988-09-30 1991-09-17 Miles Inc. Composition and test device for assaying for proteins
US5077222A (en) * 1988-09-30 1991-12-31 Miles Inc. Method for assaying for proteins using a dual indicator reagent composition
US5047350A (en) * 1989-01-19 1991-09-10 Eastman Kodak Company Material and method for oxygen sensing
AT393035B (en) * 1989-04-25 1991-07-25 Avl Verbrennungskraft Messtech METHOD FOR QUANTITATIVELY DETERMINING AT LEAST ONE CHEMICAL PARAMETER OF A SAMPLE MEDIUM
GB8910813D0 (en) * 1989-05-11 1989-06-28 Univ Manchester Method and apparatus for the determination of chlorine
US5094819A (en) * 1989-06-16 1992-03-10 Washington Research Foundation Fluorescence-based optical sensor and method for detection of lipid-soluble analytes
US5182353A (en) * 1989-08-16 1993-01-26 Puritan-Bennett Corporation Method for bonding an analyte-sensitive dye compound to an addition-cure silicone
EP0413499A3 (en) * 1989-08-16 1991-07-24 Puritan-Bennett Corporation Sensor element and method for making the same
US5015715A (en) * 1989-08-16 1991-05-14 Puritan-Bennett Corporation Method for bonding an analyte-sensitive dye compound to an addition-cure silicone
US5330718A (en) * 1989-08-16 1994-07-19 Puritan-Bennett Corporation Sensor element and method for making the same
US5127405A (en) * 1990-02-16 1992-07-07 The Boc Group, Inc. Biomedical fiber optic probe with frequency domain signal processing
US5102625A (en) * 1990-02-16 1992-04-07 Boc Health Care, Inc. Apparatus for monitoring a chemical concentration
US5175016A (en) * 1990-03-20 1992-12-29 Minnesota Mining And Manufacturing Company Method for making gas sensing element
WO1991016612A1 (en) * 1990-04-12 1991-10-31 Tsentralny Aerogidrodinamichesky Institut Imeni N.E.Zhukovskogo Method and device for determining field of presure of continuous fluid medium on the surface of an object
US5155046A (en) * 1990-08-10 1992-10-13 Puritan-Bennett Corporation System and method for measuring oxygen in the presence of halothane
AU647609B2 (en) * 1991-04-18 1994-03-24 Becton Dickinson & Company Microbial monitoring device
CA2086608A1 (en) * 1991-05-08 1992-11-09 Roger J. Morris Method and apparatus to detect bacterial contamination of transfusable blood
US5409666A (en) * 1991-08-08 1995-04-25 Minnesota Mining And Manufacturing Company Sensors and methods for sensing
US5296381A (en) * 1991-08-08 1994-03-22 Minnesota Mining & Manufacturing Co. Sensing elements and methods for making and using same
US5233194A (en) * 1992-01-03 1993-08-03 Hewlett-Packard Company Optical gas sensor with enriching polymer
EP0558771A1 (en) * 1992-03-02 1993-09-08 Aliteco Ag Luminescent pressure sensitive composition
US5453248A (en) * 1992-03-09 1995-09-26 Optical Sensors Incorporated Cross-linked gas permeable membrane of a cured perfluorinated urethane polymer, and optical gas sensors fabricated therewith
US5583047A (en) * 1992-12-10 1996-12-10 W. R. Grace & Co.-Conn. Method of detecting the permeability of an object to oxygen
US5326531A (en) * 1992-12-11 1994-07-05 Puritan-Bennett Corporation CO2 sensor using a hydrophilic polyurethane matrix and process for manufacturing
US5593899A (en) * 1993-02-25 1997-01-14 Trustees Of The University Of Pennsylvania Device and method for measuring tissue oxygenation through the skin using oxygen dependent quenching of phosphorescence
US5607644A (en) * 1993-06-10 1997-03-04 Optical Sensors Incorporated Optical sensor for the measurement of pH in a fluid, and related sensing compositions and methods
US5462880A (en) * 1993-09-13 1995-10-31 Optical Sensors Incorporated Ratiometric fluorescence method to measure oxygen
US5593854A (en) * 1994-02-16 1997-01-14 Becton Dickinson And Company Data analysis method for use with fluorescent bacterial sensors
US6080574A (en) * 1994-05-10 2000-06-27 Becton, Dickinson And Company Composite optical blood culture sensor
CA2147561C (en) * 1994-05-10 1997-09-16 Klaus W. Berndt Composite optical blood culture sensor
EP0685730B1 (en) * 1994-06-04 2000-09-06 Orbisphere Laboratories Neuchatel Sa Luminoscopic analytic device and method
US6074870A (en) * 1994-08-15 2000-06-13 Becton, Dickinson And Company Optical blood culture sensor
US5718842A (en) * 1994-10-07 1998-02-17 Joanneum Reserach Forschungsgesellschaft Mbh Luminescent dye comprising metallocomplex of a oxoporphyrin
DE19519496A1 (en) * 1995-05-27 1996-11-28 Lau Matthias Dipl Ing Oxygen-sensitive single-layer system and method for arranging the system
US6325978B1 (en) 1998-08-04 2001-12-04 Ntc Technology Inc. Oxygen monitoring and apparatus
WO1998003512A1 (en) * 1996-07-22 1998-01-29 Novartis Ag Process for the preparation of platinum or palladium benzoporphyrins and platinum or palladium cyclohexenoporphyrins, intermediates, and an oxygen sensor comprising platinum or palladium cyclohexenoporphyrin
CA2264272A1 (en) * 1996-09-18 1998-03-26 Timothy G. Foley Microbial monitoring device
US6274086B1 (en) 1996-12-16 2001-08-14 The Trustees Of The University Of Pennsylvania Apparatus for non-invasive imaging oxygen distribution in multi-dimensions
AT409306B (en) * 1997-10-03 2002-07-25 Hoffmann La Roche OPTICAL CHEMICAL SENSOR
CN1235185A (en) * 1998-05-12 1999-11-17 湖南大学 High sensibility oxygen sensible luminating material for fluorescent die-out oxygen sensor
AT407090B (en) 1998-09-15 2000-12-27 Joanneum Research Forschungsge OPTO-CHEMICAL SENSOR AND METHOD FOR THE PRODUCTION THEREOF
US7001536B2 (en) 1999-03-23 2006-02-21 The Trustees Of Princeton University Organometallic complexes as phosphorescent emitters in organic LEDs
DE19933104A1 (en) 1999-07-15 2001-01-18 Ingo Klimant Phosphorescent micro- and nanoparticles as reference standards and phosphorescence markers
NL1014464C2 (en) * 2000-02-22 2001-08-24 Tno Optical sensor for measuring oxygen.
DE10025097B4 (en) * 2000-05-20 2004-04-15 Robert Bosch Gmbh Optical sensor and method for manufacturing the same
DE10051220A1 (en) * 2000-10-16 2002-04-25 Mettler Toledo Gmbh Optical sensor for determining an analyte and method for its production
AT410601B (en) 2000-12-29 2003-06-25 Hoffmann La Roche SENSOR FOR LUMINESCENCE-OPTICAL DETERMINATION OF ANALYTICAL AND REAGENT THAT WORKS ACCORDING TO THE FRET PRINCIPLE
DE10101576B4 (en) * 2001-01-15 2016-02-18 Presens Precision Sensing Gmbh Optical sensor and sensor field
US20040171094A1 (en) * 2001-06-18 2004-09-02 Ingo Klimant Oxygen sensors disposed on a microtiter plate
GB0121444D0 (en) 2001-09-05 2001-10-24 Univ Strathclyde Sensor
DE10149734B4 (en) * 2001-10-09 2004-09-16 Robert Bosch Gmbh Gas sensor and method for manufacturing its polymer matrix
FR2831275B1 (en) * 2001-10-18 2004-01-30 Commissariat Energie Atomique SUBSTRATE COATED WITH TRANSPARENT ORGANIC FILM AND METHOD OF MANUFACTURE
EP1465730B1 (en) 2002-01-17 2011-03-09 University College Cork - National University of Ireland, Cork An assay device and method for chemical or biological screening
WO2004031321A1 (en) * 2002-10-02 2004-04-15 National Research Council Of Canada Oxygen sensing compounds, methods for production thereof and their uses
US6999807B2 (en) 2003-01-23 2006-02-14 Scimed Life Systems, Inc. pH measuring balloon
WO2004079349A1 (en) * 2003-03-07 2004-09-16 Luxcel Biosciences Limited An oxygen sensitive probe
US7534615B2 (en) 2004-12-03 2009-05-19 Cryovac, Inc. Process for detecting leaks in sealed packages
JP4727349B2 (en) * 2005-08-30 2011-07-20 三菱瓦斯化学株式会社 Oxygen detector composition
DE102006001642B4 (en) 2006-01-11 2008-02-21 Sartorius Biotech Gmbh Oxygen sensor and measuring method
US7569395B2 (en) 2006-03-13 2009-08-04 Cryovac, Inc. Method and apparatus for measuring oxygen concentration
US7749768B2 (en) 2006-03-13 2010-07-06 Cryovac, Inc. Non-invasive method of determining oxygen concentration in a sealed package
JP4876686B2 (en) * 2006-04-14 2012-02-15 富士ゼロックス株式会社 Display device
JP4930943B2 (en) * 2007-05-11 2012-05-16 国立大学法人群馬大学 Oxygen concentration measuring reagent and oxygen concentration measuring method
US8081313B2 (en) 2007-05-24 2011-12-20 Airbus Operations Limited Method and apparatus for monitoring gas concentration in a fluid
GB2452977A (en) 2007-09-21 2009-03-25 Sun Chemical Ltd Ink composition
US8613158B2 (en) 2008-04-18 2013-12-24 Ball Horticultural Company Method for grouping a plurality of growth-induced seeds for commercial use or sale based on testing of each individual seed
GB0813715D0 (en) 2008-07-28 2008-09-03 Airbus Uk Ltd A monitor and a method for measuring oxygen concentration
US20120129268A1 (en) * 2010-11-19 2012-05-24 Mayer Daniel W Photoluminescent oxygen probe with reduced cross-sensitivity to humidity
WO2013011955A1 (en) 2011-07-15 2013-01-24 国立大学法人九州大学 Delayed-fluorescence material and organic electroluminescence element using same
CN103650195B (en) 2011-07-15 2016-12-07 九州有机光材股份有限公司 Organic electroluminescent device and the compound used thereof
JP5590573B2 (en) * 2011-07-15 2014-09-17 国立大学法人九州大学 Oxygen sensor
DE102012205929A1 (en) 2012-04-12 2013-10-17 Robert Bosch Gmbh Safety sensor system for an electrochemical storage system
DE102012104688A1 (en) * 2012-05-30 2013-12-05 Hamilton Bonaduz Ag Optical sensor element
JP6456685B2 (en) * 2014-12-25 2019-01-23 国立研究開発法人産業技術総合研究所 Organic thin film solar cell
FR3044637B1 (en) * 2015-12-03 2017-12-01 Zodiac Aerotechnics INORING SYSTEM FOR A FUEL TANK OF AN AIRCRAFT, SUITABLE FOR CALCULATING THE AMOUNT OF OXYGEN PRESENT IN AN INERT GAS INJECTION IN THIS TANK
EP3510379B1 (en) 2016-09-08 2023-09-27 PreSens - Precision Sensing GmbH Method for calibrated luminescence measurement and system therefor
DE102016119810A1 (en) * 2016-10-18 2018-04-19 Hamilton Bonaduz Ag Layers for the detection of oxygen
DE102017204082A1 (en) 2017-03-13 2018-09-13 Hamilton Bonaduz Ag Device for the temperature-compensated optical detection of an oxygen content of a fluid
US11268905B2 (en) 2017-12-22 2022-03-08 Radiometer Medical Aps Method and sensor for detecting presence or absence of a contaminant
CN113514431B (en) * 2021-04-06 2022-10-04 中国农业大学 Dissolved oxygen measuring method and device

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1190583A (en) * 1966-10-19 1970-05-06 Mini Of Power Improvements in or relating to Gas Detectors
US3612866A (en) * 1969-07-08 1971-10-12 Brian Stevens Instrument for determining oxygen quantities by measuring oxygen quenching of fluorescent radiation
CA936380A (en) * 1970-04-13 1973-11-06 C. Stanley Charles Oxygen detection apparatus and method
US3725658A (en) * 1971-01-18 1973-04-03 Trw Inc Apparatus and method for continuously detecting oxygen in a gas stream
DD106086A1 (en) * 1973-07-16 1974-05-20
DE2346792C3 (en) * 1973-09-17 1979-09-20 Draegerwerk Ag, 2400 Luebeck Device for measuring the oxygen partial pressure in flowing media
DE2508637C3 (en) * 1975-02-28 1979-11-22 Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E.V., 3400 Goettingen Arrangement for the optical measurement of blood gases
JPS5924379B2 (en) * 1976-12-23 1984-06-08 東レ株式会社 Paramagnetic gas concentration detection device
DE2833356A1 (en) * 1978-07-29 1980-02-14 Max Planck Gesellschaft METHOD FOR THE OPTICAL MEASUREMENT OF SUBSTANCE CONCENTRATIONS
US4321057A (en) * 1979-09-20 1982-03-23 Buckles Richard G Method for quantitative analysis using optical fibers
DE3063621D1 (en) * 1979-11-21 1983-07-07 Gen Electric Co Plc Optical systems for sensing and measuring physical quantities
DE3001669A1 (en) * 1980-01-18 1981-08-06 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V., 3400 Göttingen ARRANGEMENT FOR OPTICAL MEASUREMENT OF PHYSICAL SIZES AND SUBSTANCE CONCENTRATIONS
DE3148830A1 (en) * 1981-12-10 1983-06-23 Wolfgang Prof. Dr.Dr. 6500 Mainz Barnikol "DEVICE FOR DETERMINING THE OXYGEN CONCENTRATION IN GASES, LIQUIDS AND TISSUES"
DD217024A1 (en) * 1982-02-01 1985-01-02 Adw Ddr Picosecond PHASENFLUOROMETER
US4476870A (en) * 1982-03-30 1984-10-16 The United States Of America As Represented By The Department Of Health And Human Services Fiber optic PO.sbsb.2 probe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7368153B2 (en) 2002-12-06 2008-05-06 Cryovac, Inc. Oxygen detection system for a rigid container
WO2020027675A1 (en) 2018-07-30 2020-02-06 Instituto Superior Técnico Non-metallic luminescent oxygen sensors for aircraft fuel tanks

Also Published As

Publication number Publication date
GB8333822D0 (en) 1984-02-01
CA1261717A (en) 1989-09-26
DE3346810A1 (en) 1984-07-26
FR2538550A1 (en) 1984-06-29
GB2132348A (en) 1984-07-04
JPS59170748A (en) 1984-09-27
DE3346810C2 (en) 1995-03-23
FR2538550B1 (en) 1986-07-04
JPH0643963B2 (en) 1994-06-08

Similar Documents

Publication Publication Date Title
GB2132348B (en) Method and apparatus for determining the presence of oxygen
GB2070772B (en) Method and apparatus for detection of dew point
JPS5781355A (en) Apparatus and method of detecting occlusion
JPS56168574A (en) Method of and apparatus for determining bearing angle
EP0059557A3 (en) Method and apparatus for measuring the concentration of gases
GB2115146B (en) Method and apparatus for determination of anions
GB2128736B (en) Apparatus and method for determining the hydrogen content of a substance
JPS5754862A (en) Method of and apparatus for detecting and quantization
ZA835925B (en) Method and apparatus for oxygen delignification
GB2132502B (en) Method and apparatus for the removal of oxygen from water
IL64556A0 (en) Method and apparatus for batterymolding
GB2127966B (en) Method and apparatus for detecting sound source
JPS57123447A (en) Detection method of digital sequence and apparatus for executing the same
GB2131001B (en) Currency-dispensing method and apparatus
ZA834732B (en) Method and apparatus for measuring distance
GB2083621B (en) Method and apparatus for determining the shape of objects
GB2098849B (en) Method and apparatus for the concentration of fruits
DE3374816D1 (en) Method and apparatus for entering graphics
GB8307963D0 (en) Method and apparatus
DE3373942D1 (en) Measuring method and apparatus
GB2129356B (en) Billet-shearing method and apparatus
DE3379593D1 (en) Inspection apparatus and method
GB2120921B (en) Method and apparatus for increasing the volume of tobacco
JPS56135150A (en) Apparatus for and method of inspecting surface
DE3377082D1 (en) Method and apparatus for determining concentration of gas

Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20031219