US2910348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Working up of sulfide iron ores
Assignee: Individual
•
Filing: 1953-08-11
•
Granted: 1959-10-27
•
Expires: 1973-08-11
Abstract
No abstract record available.
Inventors
- 👤 Kuss Ernst
- 👤 Emert Oskar
- 👤 Dietrich Alfred
- 👤 Elbel Arnold
- 👤 Zirngibl Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:26
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/02; C01; C01B; C01B17/00; C01B17/02; C01B17/06; C22B1/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
PROCESS FOR THE RECOVERY OF SULFUR, METALLIC OXIDES, AND METALLIC SULFATES FROM IRON SULFIDE ORES WHICH COMPRISES CONTACTING SUCH AN ORE IN A REACTION ZONE WITH A REACTION GAS, PREHEATED TO A TEMPERATURE IN EXCESS OF 500 C. AND CONTAINING AT LEAST 90* SULFUR DIOXIDE AND AN
Claim 2
Dependent Claim
47 words
PROCESS FOR THE RECOVERY OF SULFUR, METALLIC OXIDES, AND METALLIC SULFATES FROM IRON SULFIDE ORES WHICH COMPRISES CONTACTING SUCH AN ORE IN A REACTION ZONE WITH A REACTION GAS, PREHEATED TO A TEMPERATURE IN EXCESS OF 500 C. AND CONTAINING AT LEAST 90* SULFUR DIOXIDE AND AN
References Cited (Backward Citations)
US1567378A
Cited
US2044960A
Cited
US1939033A
Cited
US1941592A
Cited
US1974886A
Cited
US2530630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |