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US3727049A
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Method for determining immiscible water content of fluids by spectrophotometer
Assignee: United States Department of the Navy
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Filing: 1967-05-01
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Granted: 1973-04-10
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Expires: 1987-05-01
Abstract
Abstract A process is given for determining the relative proportion of water present in a fluid medium which involves mixing the medium with solvent to form a solution and analyzing the solution by spectrophotometric means to determine the total water content of the medium.
Inventors
- 👤 R Saunders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:03
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/26; G01N33/28; G01N33/2835; G01N33/2847
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
14 words
The method as defined in claim 1, wherein the electromagnetic radiation is infrared radiation.
Claim 2
Dependent Claim
22 words
The method as defined in claim 2, wherein the radiation comprises wavelengths in the region of from about 1.8 to 8 microns.
Claim 3
Dependent Claim
16 words
The method as defined in claim 2, wherein the radiation includes wavelengths at about 2.9 microns.
Claim 4
Dependent Claim
17 words
The method as defined in claim 1, wherein the liquid-water immiscible mixture is a fuel oil-water mixture.
Claim 5
Dependent Claim
24 words
The method as defined in claim 1, wherein the organic solvent is selected from the group consisting of N-ethylmorpholine, tetrahydrofuran, bis(ethylhexyl)ether and mixtures thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |