US5334837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Micro analytical method, sampling plate used in same, method of detecting organic compound by use of said micro analytical method, apparatus for same and method of dividing for micro-liquid flow
Assignee: Horiba Ltd
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Filing: 1992-09-30
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Granted: 1994-08-02
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Expires: 2012-09-30
Abstract
Abstract Microanalytical methods and associated apparatus for detecting and quantifying organic compounds with very high sensitivity utilize reflected or refracted infrared radiation. By depositing microliter sized quantities of the sample containing solution in a drop-by-drop manner on a water-repellent thin film and rapidly evaporating a solvent, a coherently condensed concentric sample is produced having enhanced sample thickness. This sample is irradiated with infrared radiation which is either reflected or transmitted by the material underlying the thin film. Measuring the spectrum of the infrared radiation passing through the sample detects the existence and concentration of the organic compound. The water-repellent thin film may be provided with multiple small scale depressions, pinholes or zones of reduced surface tension for condensing the sample.
Inventors
- 👤 Masahiko Ikeda
- 👤 Hirosi Uchihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:04
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/508; B01L3/5085; B01L3/5088; G; G01; G01N; G01N1/00; G01N1/28; G01N1/2813; G01N21/00; G01N21/01; G01N21/17; G01N21/25; G01N21/251; G01N21/253; G01N30/00; G01N30/02; G01N30/84; G01N2030/8411; G01N2030/8417; G01N35/00; G01N2035/00178; G01N2035/00237; G01N35/10; G01N2035/1027; G01N2035/1034; G01N30/04; G01N30/06; G01N30/10; G01N30/62; G01N30/74; G01N35/00009
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
59 words
A micro spectrometric analytical method comprising: depositing microliter quantities of a solution of a solute in a solvent drop by drop on a water-repellent thin film applied to an infrared ray-reflecting material, evaporating said solvent to provide a sample, irradiating said sample with infrared radiation, and measuring the infrared spectrum reflected from said infrared ray-reflecting material through said sample.
Claim 2
Dependent Claim
59 words
A micro spectrometric analytical method comprising: depositing microliter quantities of a solution of a solute in a solvent drop by drop on a water-repellent thin film applied to an infrared ray-reflecting material, evaporating said solvent to provide a sample, irradiating said sample with infrared radiation, and measuring the infrared spectrum reflected from said infrared ray-reflecting material through said sample.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein said water-repellent thin film comprises a thin film of fluoride resins.
Claim 4
Dependent Claim
30 words
The method of claim 1 wherein said water-repellent thin film contains a multiplicity of depressions into which said solution is deposited and which serve as condensing nuclei for said solution.
Claim 5
Dependent Claim
30 words
The method of claim 1 wherein said water-repellent thin film contains a multiplicity of pinholes into which said solution is deposited and which serve as condensing nuclei for said solution.
Claim 6
Dependent Claim
59 words
A micro spectrometic analytical method comprising: depositing microliter quantities of a solution of a solute in a solvent drop by drop on a water-repellent thin film applied to an infrared ray-transmitting material, evaporating said solvent to provide a sample, irradiating said sample with infrared radiation, and measuring the infrared spectrum transmitted through said sample and said infrared ray-transmitting material.
Claim 7
Dependent Claim
59 words
A micro spectrometic analytical method comprising: depositing microliter quantities of a solution of a solute in a solvent drop by drop on a water-repellent thin film applied to an infrared ray-transmitting material, evaporating said solvent to provide a sample, irradiating said sample with infrared radiation, and measuring the infrared spectrum transmitted through said sample and said infrared ray-transmitting material.
Claim 8
Dependent Claim
17 words
The method of claim 5 wherein said water-repellent thin film comprises a thin film of fluoride resins.
Claim 9
Dependent Claim
30 words
The method of claim 5 wherein said water-repellent thin film contains a multiplicity of depressions into which said solution is deposited and which serve as condensing nuclei for said solution.
Claim 10
Dependent Claim
30 words
The method of claim 5 wherein said water-repellent thin film contains a multiplicity of pinholes into which said solution is deposited and which serve as condensing nuclei for said solution.
Claim 11
Dependent Claim
60 words
A micro spectrometric analytical method comprising: depositing microliter quantities of a solution of a solute in a solvent drop by drop on a water-repellent base, evaporating said solvent to provide a sample, transferring said sample to an infrared ray-reflecting material, irradiating said sample with infrared radiation, and measuring the infrared spectrum reflected from said infrared ray-reflecting material through said sample.
Claim 12
Dependent Claim
60 words
A micro spectrometric analytical method comprising: depositing microliter quantities of a solution of a solute in a solvent drop by drop on a water-repellent base, evaporating said solvent to provide a sample, transferring said sample to an infrared ray-reflecting material, irradiating said sample with infrared radiation, and measuring the infrared spectrum reflected from said infrared ray-reflecting material through said sample.
Claim 13
Dependent Claim
16 words
The method of claim 9 wherein said water-repellent base comprises a thin film of fluoride resins.
Claim 14
Dependent Claim
29 words
The method of claim 9 wherein said water-repellent base contains a multiplicity of depressions into which said solution is deposited and which serve as condensing nuclei for said solution.
Claim 15
Dependent Claim
29 words
The method of claim 9 wherein said water-repellent base contains a multiplicity of pinholes into which said solution is deposited and which serve as condensing nuclei for said solution.
Claim 16
Dependent Claim
61 words
A micro spectrometric analytical method comprising: depositing microliter quantities of a solution of a solute in a solvent drop by drop on a water-repellent base, evaporating said solvent to provide a sample, transferring said sample to an infrared ray transmitting material, irradiating said sample with infrared radiation, and measuring the infrared spectrum transmitted through said sample and said infrared ray-transmitting material.
Claim 17
Dependent Claim
61 words
A micro spectrometric analytical method comprising: depositing microliter quantities of a solution of a solute in a solvent drop by drop on a water-repellent base, evaporating said solvent to provide a sample, transferring said sample to an infrared ray transmitting material, irradiating said sample with infrared radiation, and measuring the infrared spectrum transmitted through said sample and said infrared ray-transmitting material.
Claim 18
Dependent Claim
16 words
The method of claim 13 wherein said water-repellent base comprises a thin film of fluoride resins.
Claim 19
Dependent Claim
29 words
The method of claim 13 wherein said water-repellent base contains a multiplicity of depressions into which said solution is deposited and which serve as condensing nuclei for said solution.
Claim 20
Dependent Claim
29 words
The method of claim 13 wherein said water-repellent base contains a multiplicity of pinholes into which said solution is deposited and which serve as condensing nuclei for said solution.
Claim 21
Dependent Claim
14 words
A sampling plate comprising a water-repellent thin film applied to an infrared ray-reflecting material.
Claim 22
Dependent Claim
14 words
A sampling plate comprising a water-repellent thin film applied to an infrared ray-reflecting material.
Claim 23
Dependent Claim
18 words
A sampling plate of claim 17 wherein said water-repellent thin film comprises a thin film of fluoride resins.
Claim 24
Dependent Claim
27 words
A sampling plate of claim 17 wherein said water-repellent thin film contains a multiplicity of depressions which may serve as condensing nuclei for a solution being evaporated.
Claim 25
Dependent Claim
27 words
A sampling plate of claim 17 wherein said water-repellent thin film contains a multiplicity of pinholes which may serve as condensing nuclei for a solution being evaporated.
Claim 26
Dependent Claim
14 words
A sampling plate comprising a water-repellent thin film applied to an infrared ray-transmitting material.
Claim 27
Dependent Claim
14 words
A sampling plate comprising a water-repellent thin film applied to an infrared ray-transmitting material.
Claim 28
Dependent Claim
18 words
The sampling plate of claim 21 wherein said water-repellent thin film comprises a thin film of fluoride resins.
Claim 29
Dependent Claim
27 words
A sampling plate of claim 21 wherein said water-repellent thin film contains a multiplicity of depressions which may serve as condensing nuclei for a solution being evaporated.
Claim 30
Dependent Claim
27 words
A sampling plate of claim 21 wherein said water-repellent thin film contains a multiplicity of pinholes which may serve as condensing nuclei for a solution being evaporated.
Claim 31
Independent Claim
79 words
A method of detecting organic compounds, in which a liquid eluted from a column of a liquid chromatograph is deposited drop by drop on a thin film of water-repellent fluoride resins applied to an infrared ray-reflecting material and a sample of organic compounds coherently concentrated on said think film is irradiated with infrared rays to detect reflected infrared rays and measure the absorbing degree of said reflected infrared rays, thereby detecting the existence and concentration of said organic compounds.
Claim 32
Independent Claim
79 words
A method of detecting organic compounds, in which a liquid eluted from a column of a liquid chromatograph is deposited drop by drop on a thin film of water-repellent fluoride resins applied to an infrared ray-reflecting material and a sample of organic compounds coherently concentrated on said think film is irradiated with infrared rays to detect reflected infrared rays and measure the absorbing degree of said reflected infrared rays, thereby detecting the existence and concentration of said organic compounds.
Claim 33
Independent Claim
79 words
A method of detecting organic compounds, in which a liquid eluted from a column of a liquid chromatograph is deposited drop by drop on a thin film of water-repellent fluoride resins applied to an infrared ray-transmitting material and a sample of organic compounds coherently concentrated on said thin film is irradiated with infrared rays to detect transmitted infrared rays and measure the absorbing degree of said transmitted infrared rays, thereby detecting the existence and concentration of said organic compounds.
Claim 34
Independent Claim
79 words
A method of detecting organic compounds, in which a liquid eluted from a column of a liquid chromatograph is deposited drop by drop on a thin film of water-repellent fluoride resins applied to an infrared ray-transmitting material and a sample of organic compounds coherently concentrated on said thin film is irradiated with infrared rays to detect transmitted infrared rays and measure the absorbing degree of said transmitted infrared rays, thereby detecting the existence and concentration of said organic compounds.
Claim 35
Independent Claim
94 words
An apparatus of detecting organic compounds comprising a column of a liquid chromatograph, a device for dropping a liquid from said column, a sampling plate provided with a thin film of water-repellent fluoride resins formed on a surface thereof, a sampler for conveying said sampling plate at an appointed speed in an appointed direction, an infrared ray-irradiating device for irradiating a sample coherently concentrated on said thin film with infrared rays, and an infrared ray-detecting portion for detecting infrared rays reflected from said sampling plate when said sample is irradiated with said infrared rays.
Claim 36
Independent Claim
94 words
An apparatus of detecting organic compounds comprising a column of a liquid chromatograph, a device for dropping a liquid from said column, a sampling plate provided with a thin film of water-repellent fluoride resins formed on a surface thereof, a sampler for conveying said sampling plate at an appointed speed in an appointed direction, an infrared ray-irradiating device for irradiating a sample coherently concentrated on said thin film with infrared rays, and an infrared ray-detecting portion for detecting infrared rays reflected from said sampling plate when said sample is irradiated with said infrared rays.
Claim 37
Independent Claim
99 words
An apparatus of detecting organic compounds comprising a column of a liquid chromatograph, a device for dropping a liquid from said column, a sampling plate provided with a thin film of water-repellent fluoride resins formed on a surface thereof, a sampler for conveying said sampling plate at an appointed speed in an appointed direction, an infrared ray-irradiating device for irradiating a sample coherently concentrated on said thin film with infrared rays, and an infrared ray-detecting portion for detecting infrared rays, which have transmitted through said sample and said sampling plate, when said sample is irradiated with said infrared rays.
Claim 38
Independent Claim
99 words
An apparatus of detecting organic compounds comprising a column of a liquid chromatograph, a device for dropping a liquid from said column, a sampling plate provided with a thin film of water-repellent fluoride resins formed on a surface thereof, a sampler for conveying said sampling plate at an appointed speed in an appointed direction, an infrared ray-irradiating device for irradiating a sample coherently concentrated on said thin film with infrared rays, and an infrared ray-detecting portion for detecting infrared rays, which have transmitted through said sample and said sampling plate, when said sample is irradiated with said infrared rays.
References Cited (Backward Citations)
JPS6179142A
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US4823009A
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JPS633244A
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DD250773A1
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JPS6396558A
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JPH0228533A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-08-01 | 1998-01-31 | 1998-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-01 | 2002-01-31 | 2002-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-01 | 2006-01-31 | 2006-08-02 | $7700.00 | Window Closed / Lapsed |