US2807535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and plant for reducing iron ore
Assignee: Vetrocoke SpA
•
Filing: 1954-03-17
•
Granted: 1957-09-24
•
Expires: 1974-03-17
Abstract
No abstract record available.
Inventors
- 👤 Segre Uberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:43
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/0073; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A PROCESS FOR REDUCING PREHEATED IRON ORE BY MEANS OF A GASEOUS REDUCING AGENT PREVAILINGLY COMPOSED OF CARBON MONOXIDE AND HYDROGEN IN THE RATIO OF AT LEAST TWO PARTS OF CARBON MONOXIDE TO ONE POART OF HYDROGEN, COMPRISING REDUCING FERROUS OXIDE TO IRON WITH THE GASEOUS AGENT, REGENERATING THE GASEOUS AGENT AFTER IT HAS BEEN UTILIZED BY REMOVING THE OXIDIZED COMPOUNDS, SUPPLEMENTING THE RECOVERED GASEOUS AGENT WITH THE REQUISITE QUANTITY PRODUCED BY THE CRACKING OF METHANE IN A RE-
Claim 2
Dependent Claim
79 words
A PROCESS FOR REDUCING PREHEATED IRON ORE BY MEANS OF A GASEOUS REDUCING AGENT PREVAILINGLY COMPOSED OF CARBON MONOXIDE AND HYDROGEN IN THE RATIO OF AT LEAST TWO PARTS OF CARBON MONOXIDE TO ONE POART OF HYDROGEN, COMPRISING REDUCING FERROUS OXIDE TO IRON WITH THE GASEOUS AGENT, REGENERATING THE GASEOUS AGENT AFTER IT HAS BEEN UTILIZED BY REMOVING THE OXIDIZED COMPOUNDS, SUPPLEMENTING THE RECOVERED GASEOUS AGENT WITH THE REQUISITE QUANTITY PRODUCED BY THE CRACKING OF METHANE IN A RE-
References Cited (Backward Citations)
US1863804A
Cited
DE560357C
Cited
US2107549A
Cited
US2142100A
Cited
US2547685A
Cited
US2740706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |