US3579298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of ammonium nitrate
Assignee: Phillips Petroleum Co
•
Filing: 1968-08-05
•
Granted: 1971-05-18
•
Expires: 1988-08-05
Abstract
Abstract AN AQUEOUS STREAM COMPRISING ESSENTIALLY WATER AND A MINOR AMOUNT OF AMMONIA IS REACTED WITH AT LEAST ENOUGH NITRIC ACID TO PRODUCE AN AMMONIA-FREE WATER STREAM CONTAINING AMINOR AMOUNT OF AMMONIUM NITRATE, AND THEN UTILIZING SAID AMMONIUM NITRATE-CONTAINING STREAM TO ABSORB AT LEAST A PORTION OF NITROGEN DIOXIDE GAS TO PRODUCE NITRIC ACID CONTAINING A MINOR AMOUNT OF AMMONIUM NITRATE.
Inventors
- 👤 George O'brien
- 👤 John S Hubby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:32
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/18; C01C1/185
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |