US2735503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diameter
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
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Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:30
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/02; G01V1/104
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
A METHOD OF PRODUCING SEISMIC WAVES IN AN UNCONSOLIDATED LAYER HAVING A LOOSE SAND ZONE THEREIN WHICH COMPRISES INITIALLY FORMING A SPHERICAL CAVITY IN A LOOSE SAND ZONE IN SAID UNCONSOLIDATED LAYER BY THE DETONATION OF A SMALL CHARGE IN SAID LOOSE SAND ZONE, SPRINGING SAID CAVITY BY THE DETONATION OF SUCCESSIVE WATER-TAMPED CHARGES OF SUCH SIZE THAT THE WALLS OF SAID CAVITY ARE COMPRESSED TO A MAXIMUM THEREBY RESULTING IN A SPHERICAL CAVITY OF MAXIMUM DIAMETER, AND DETONATING THEREIN AN ADDITIONAL EXPLOSIVE CHARGE SUFFICIENT TO PRODUCE SEISMIC WAVES.
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) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |