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US3077387A
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US3077387A - - Google Patents
Assignee: —
•
Filing: —
•
Granted: 1963-02-12
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Expires: 1980-02-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:03
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/24; G01N33/241; E; E21; E21B; E21B47/00; E21B47/10; E21B47/11; G01N31/00; G01N31/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A METHOD FOR TRACING THE FLOW OF WATER IN SUBTERRANEAN AREAS INCLUDING ADDING A WATER-SOLUBLE CHROMATE ION-YIELDING COMPOUND TO THE WATER AT AN ORGANIC POINT IN AMOUNTS SUFFICIENT TO ENABLE DETECTION OF THE CHROMATE ION AT THE RECOVERY POINT, RECOVERING A PORTION OF WATER AT A RECOVERY POINT, AND ANALYZING THE PORTION FOR CHROMATE ION CONTENT AS AN INDICATION OF WATER DERIVATION FROM THE ORGANIC POINT.
Claim 2
Independent Claim
66 words
A METHOD FOR TRACING THE FLOW OF WATER IN SUBTERRANEAN AREAS INCLUDING ADDING A WATER-SOLUBLE CHROMATE ION-YIELDING COMPOUND TO THE WATER AT AN ORGANIC POINT IN AMOUNTS SUFFICIENT TO ENABLE DETECTION OF THE CHROMATE ION AT THE RECOVERY POINT, RECOVERING A PORTION OF WATER AT A RECOVERY POINT, AND ANALYZING THE PORTION FOR CHROMATE ION CONTENT AS AN INDICATION OF WATER DERIVATION FROM THE ORGANIC POINT.
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) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |