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 liquidiInfo
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
- C09K19/50—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing steroidal liquid crystal compounds
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/22—Investigating 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
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/19—Halogen containing
- Y10T436/196666—Carbon containing compound [e.g., vinylchloride, etc.]
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/20—Oxygen containing
- Y10T436/206664—Ozone or peroxide
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/21—Hydrocarbon
- Y10T436/212—Aromatic
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)
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)
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)
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 |
-
1963
- 1963-11-13 US US323341A patent/US3409404A/en not_active Expired - Lifetime
-
1964
- 1964-10-30 GB GB44400/64A patent/GB1041490A/en not_active Expired
- 1964-11-13 IT IT24487/64A patent/IT957002B/it active
Also Published As
Publication number | Publication date |
---|---|
GB1041490A (en) | 1966-09-07 |
US3409404A (en) | 1968-11-05 |
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