IT957002B - Dispositivo per l analisi qualita tiva e quantitativa di sostanze con l impiego di cristalli liquidi - Google Patents

Dispositivo per l analisi qualita tiva e quantitativa di sostanze con l impiego di cristalli liquidi

Info

Publication number
IT957002B
IT957002B IT24487/64A IT2448764A IT957002B IT 957002 B IT957002 B IT 957002B IT 24487/64 A IT24487/64 A IT 24487/64A IT 2448764 A IT2448764 A IT 2448764A IT 957002 B IT957002 B IT 957002B
Authority
IT
Italy
Prior art keywords
substances
quality
liquid crystals
quantitative analysis
quantitative
Prior art date
Application number
IT24487/64A
Other languages
English (en)
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Application granted granted Critical
Publication of IT957002B publication Critical patent/IT957002B/it

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00Liquid crystal materials
    • C09K19/04Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/42Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
    • C09K19/50Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing steroidal liquid crystal compounds
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/22Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00Chemistry: analytical and immunological testing
    • Y10T436/19Halogen containing
    • Y10T436/196666Carbon containing compound [e.g., vinylchloride, etc.]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00Chemistry: analytical and immunological testing
    • Y10T436/20Oxygen containing
    • Y10T436/206664Ozone or peroxide
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00Chemistry: analytical and immunological testing
    • Y10T436/21Hydrocarbon
    • Y10T436/212Aromatic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Molecular Biology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Biophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Liquid Crystal Substances (AREA)
  • Steroid Compounds (AREA)
IT24487/64A 1963-11-13 1964-11-13 Dispositivo per l analisi qualita tiva e quantitativa di sostanze con l impiego di cristalli liquidi IT957002B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US323341A US3409404A (en) 1963-11-13 1963-11-13 Analytical methods and devices employing cholesteric liquid crystalline materials

Publications (1)

Publication Number Publication Date
IT957002B true IT957002B (it) 1973-10-10

Family

ID=23258799

Family Applications (1)

Application Number Title Priority Date Filing Date
IT24487/64A IT957002B (it) 1963-11-13 1964-11-13 Dispositivo per l analisi qualita tiva e quantitativa di sostanze con l impiego di cristalli liquidi

Country Status (3)

Country Link
US (1) US3409404A (it)
GB (1) GB1041490A (it)
IT (1) IT957002B (it)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529156A (en) * 1966-06-13 1970-09-15 Westinghouse Electric Corp Hysteretic cholesteric liquid crystalline compositions and recording devices utilizing such compositions
US3492493A (en) * 1966-12-16 1970-01-27 Bell Telephone Labor Inc Photochromic optical fiber switch
US3620889A (en) * 1968-06-11 1971-11-16 Vari Light Corp Liquid crystal systems
US3885982A (en) * 1968-06-18 1975-05-27 G J Roush Liquid crystal coating
US3657538A (en) * 1968-08-22 1972-04-18 Westinghouse Electric Corp Method and apparatus for detecting x-ray radiation using a cholesteric detector
US3655971A (en) * 1969-08-12 1972-04-11 Xerox Corp Imaging system
US3633425A (en) * 1970-01-02 1972-01-11 Meditech Energy And Environmen Chromatic temperature indicator
US3888892A (en) * 1972-10-24 1975-06-10 Xerox Corp Liquid crystalline compounds
US3927977A (en) * 1974-09-20 1975-12-23 Us Health Liquid crystal gas analyzer
US3975288A (en) * 1975-01-02 1976-08-17 Rpr, Inc. High temperature non-crystallizing cholesteric liquid crystal compositions
US4066567A (en) * 1976-02-04 1978-01-03 Temple University Liquid crystal cumulative dosimeter
DE2915367A1 (de) * 1979-04-14 1980-10-30 Max Planck Gesellschaft Optische indikatormessung
US4433637A (en) 1979-06-04 1984-02-28 Vectra International Corporation Microencapsulated cholesteric liquid crystal temperature measuring device for determining the temperature of non-planar or planar surfaces
US4501503A (en) * 1979-06-04 1985-02-26 Vectra International Corporation Thermographic cholesteric coating compositions and plates
US4441508A (en) * 1979-06-04 1984-04-10 Vectra International Corporation Thermographic cholesteric coating compositions and plates
US4301054A (en) * 1979-06-04 1981-11-17 Thermal Imagery, Inc. Thermographic cholesteric coating compositions
US4296631A (en) * 1979-09-21 1981-10-27 Becton, Dickinson And Company Liquid crystal compositions and devices
IT1140531B (it) * 1980-02-06 1986-10-01 Farmacologico Milanese Snc Lab Composizioni termometriche per la misurazione ed indicazione di basse temperature ed elementi termometrici risultanti
US4495291A (en) * 1981-03-06 1985-01-22 Graphic Controls Corporation Indicators for ethylene oxide
US4469452A (en) * 1982-04-14 1984-09-04 Whitman Medical Corporation Indicator system and means for irreversibly recording a temperature limit
CA1214592A (en) * 1982-12-15 1986-11-25 Paul J. Shannon Polymeric liquid crystals
US4597942A (en) * 1983-05-25 1986-07-01 Graphic Controls Canada Ltd. Device to indicate the concentration of ethylene oxide in the workplace
US4999348A (en) * 1987-12-11 1991-03-12 Estee Lauder Inc. Liquid crystal containing cosmetic and pharmaceutical compositions and methods for utilizing such compositions
US5190175A (en) * 1992-06-10 1993-03-02 Continental White Cap, Inc. Tamper evident closure
US6031594A (en) * 1998-03-12 2000-02-29 Engle; Craig D. Electro-optic device
US6790670B2 (en) 2001-10-09 2004-09-14 S.C. Johnson & Son, Inc. End of use and time duration indicator system and method based on volatile dye
JP2009516821A (ja) * 2005-08-26 2009-04-23 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 試料を扱う及び分析するための基体の材料
US8178355B2 (en) * 2008-09-15 2012-05-15 Platypus Technologies, Llc. Detection of vapor phase compounds by changes in physical properties of a liquid crystal
EP2221592A1 (en) * 2009-01-22 2010-08-25 Stichting Dutch Polymer Institute Multifunctional optical sensor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2785057A (en) * 1953-12-08 1957-03-12 Union Central Life Insurance C Device for testing liquids
US3006735A (en) * 1959-09-22 1961-10-31 Morton Salt Co Quick-dip indicator
US3114836A (en) * 1960-03-04 1963-12-17 Westinghouse Electric Corp Thermal imaging devices utilizing a cholesteric liquid crystalline phase material
DE1448134A1 (de) * 1961-10-19 1969-04-17 Euratom Farbindikator zur Verwendung in der Duennschichtchromatographie von Polyphenylgemischen

Also Published As

Publication number Publication date
GB1041490A (en) 1966-09-07
US3409404A (en) 1968-11-05

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