Patent US2704662A successfully refreshed from Google Patents.
US2704662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Kocks
Assignee: —
•
Filing: —
•
Granted: 1955-03-22
•
Expires: 1972-03-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:49
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/12; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A DEVICE FOR THE REDUCTION OF IRON OXIDES AND PARTICULARLY OF IRON ORES IN THE SOLID STATE COMPRISING A CYLINDIRICAL STEEL VESSEL, A REDUCTION ZONE IN SAID VESSEL, AN ENCASEMENT GAS-TIGHTLY APPLIED TO THE CIRCUMFERENCE OF SAID VESSEL AND SUBSTANTIALLY EXTENDING THROUGHOUT THE HEIGHT OF SAID REDUCTION ZONE AND PRESSURE RELEASING MEANS
Claim 2
Independent Claim
52 words
A DEVICE FOR THE REDUCTION OF IRON OXIDES AND PARTICULARLY OF IRON ORES IN THE SOLID STATE COMPRISING A CYLINDIRICAL STEEL VESSEL, A REDUCTION ZONE IN SAID VESSEL, AN ENCASEMENT GAS-TIGHTLY APPLIED TO THE CIRCUMFERENCE OF SAID VESSEL AND SUBSTANTIALLY EXTENDING THROUGHOUT THE HEIGHT OF SAID REDUCTION ZONE AND PRESSURE RELEASING MEANS
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) | 1958-03-21 | 1958-09-20 | 1959-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-21 | 1962-09-20 | 1963-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-21 | 1966-09-20 | 1967-03-22 | $7700.00 | Window Closed / Lapsed |