US3833340A
Expired / Lapsed
US
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Determination of water content of liquid mixtures
Assignee: Drew Chemical Corp
•
Filing: 1972-12-04
•
Granted: 1974-09-03
•
Expires: 1992-12-04
Abstract
Abstract A material which produces heat when in contact with water is added to a water containing liquid mixture and the increase in temperature is recorded. From a known relationship between water content and temperature increase resulting from contact between water and the material, the water content of the liquid mixture is easily determined.
Inventors
- 👤 G Jones
- 👤 F Mahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:03
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/56
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
12 words
The process of claim 1 wherein said material is an inorganic acid.
Claim 2
Dependent Claim
12 words
The process of claim 1 wherein said material is an inorganic base.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein said material is sulfuric acid.
Claim 4
Dependent Claim
68 words
The process of claim 1 wherein the addition of said material to said liquid mixture is effected in the presence of a fixed quantity of liquid diluent and said comparing is effected with a predetermined relationship between water content and increase in temperature resulting from addition of said material to said liquid mixture having known quantities of water in the presence of said fixed quantity of liquid diluent.
Claim 5
Dependent Claim
12 words
The process of claim 5 wherein said material is an inorganic acid.
References Cited (Backward Citations)
US2145203A
Cited
US3607782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |