US2736261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blasting means
Assignee: —
•
Filing: 1950-07-20
•
Granted: 1956-02-28
•
Expires: 1970-07-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:52
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/04; F42B3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
5 GRAM PER CUBIC CENTIMETER, THE SOLID FREE SPACE BEING OCCUPIED BY GASEOUS MATERIAL
Claim 2
Independent Claim
73 words
A METHOD OF BLASTING COMPRISING HEATING IN A PRESSURE-RESISTANT TUBE HAVING A FRANGIBLE CLOSURE AT ONE END A GAS-GENERATING COMPOSITION COMPRISING A MAJOR PROPORTION OF AMMONIUM NITRATE, SAID GAS-GENERATING COMPOSITION BEING DISTRIBUTED ALONG THE AXIS OF SAID PRESSURERESISTANT TUBE IN SUCH AMOUNT THAT THE LOADING DENSITY OF THE AMMONIUM NITRATE THROUGHOUT THE PRESSURE-RESISTANT TUBE IS 0.1 TO 0.3 GRAM PER CUBIC CENTIMETER AND AT ANY CROSS-SECTION OF THE PRESSURE-RESISTANT TUBE IS LESS THAN
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) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |