US2645559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ammonium sulfate production
Assignee: Individual
•
Filing: 1949-03-23
•
Granted: 1953-07-14
•
Expires: 1969-03-23
Abstract
No abstract record available.
Inventors
- 👤 Otto Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:52
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/24; C01C1/242
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
THE METHODS OF PRODUCING AMMONIUM SULPHATE FROM GAS HAVING A SMALL AMMONIA CONTENT. WHICH CONSISTS IN PASSING GAS DOWNWARD THROUGH A PRIMARY SPRAYING ZONE AND THE UPWARD THROUGH A SECONDARY SPRAY ZONE HAVING A LOWER PORTION IN COMMUNICATION WITH THE LOWER END OF THE PRIMARY SPRAY ZONE, EACH OF SAID ZONES BEING SUBSTANTIALLY UNOBSTRUCTED, DISPERSING SATURATED AMMONIUM SULPHATE LIQUOR HAVING A SMALL SULPHURIC ACID CONTENT IN THE UPPER PORTION OF EACH ZONE AND THEREBY SUPERSATURATING SAID LIQUOR, AND REMOVING THE LIQUOR SPRAYED INTO SAID ZONES FROM THE LOWER END OF SAID SECONDARY ZONE.
Claim 2
Dependent Claim
93 words
THE METHODS OF PRODUCING AMMONIUM SULPHATE FROM GAS HAVING A SMALL AMMONIA CONTENT. WHICH CONSISTS IN PASSING GAS DOWNWARD THROUGH A PRIMARY SPRAYING ZONE AND THE UPWARD THROUGH A SECONDARY SPRAY ZONE HAVING A LOWER PORTION IN COMMUNICATION WITH THE LOWER END OF THE PRIMARY SPRAY ZONE, EACH OF SAID ZONES BEING SUBSTANTIALLY UNOBSTRUCTED, DISPERSING SATURATED AMMONIUM SULPHATE LIQUOR HAVING A SMALL SULPHURIC ACID CONTENT IN THE UPPER PORTION OF EACH ZONE AND THEREBY SUPERSATURATING SAID LIQUOR, AND REMOVING THE LIQUOR SPRAYED INTO SAID ZONES FROM THE LOWER END OF SAID SECONDARY ZONE.
References Cited (Backward Citations)
US1562914A
Cited
US1922186A
Cited
US1971563A
Cited
US1942050A
Cited
US2067311A
Cited
US2435898A
Cited
US2482643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |