US3083090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of sinter
Assignee: United Steel Companies Ltd
•
Filing: 1958-09-22
•
Granted: 1963-03-26
•
Expires: 1978-09-22
Abstract
No abstract record available.
Inventors
- 👤 Davies William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:39
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/16; C22B1/20; Y; Y10; Y10S; Y10S75/00; Y10S75/962
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN A PROCESS FOR TREATING AN IRON-BEARING OXIDIC MATERIAL THAT INCLUDES SLAG-FORMING CONSTITUENTS BY FORMING THE MATERIAL AND SOLID FUEL INTO A BED ON A TRAVELING GRATE AND SINTERING THE CHARGE BY DRAWING AIR SUBSTANTIALLY PERPENDICULARLY THROUGH THE BED, THE STEPS WHICH COMPRISE ADJUSTING THE TOTAL AMOUNTS OF FUEL AND AIR SO THAT THE GREATER PART OF THE METALLIC OXIDES IS REDUCED TO METAL, ADJUSTING THE COMPOSITION OF THE BED SO THAT THE SLAG MATRIX FORMED ON SINTERING IS FLUID ENOUGH TO ENVELOPE THE LIBERATED METAL AND PREVENT REOXIDATION, AND MAINTAINING THE MAXIMUM BED TEMPERATURE BETWEEN 1100 AND 1500*C.
Claim 2
Dependent Claim
99 words
IN A PROCESS FOR TREATING AN IRON-BEARING OXIDIC MATERIAL THAT INCLUDES SLAG-FORMING CONSTITUENTS BY FORMING THE MATERIAL AND SOLID FUEL INTO A BED ON A TRAVELING GRATE AND SINTERING THE CHARGE BY DRAWING AIR SUBSTANTIALLY PERPENDICULARLY THROUGH THE BED, THE STEPS WHICH COMPRISE ADJUSTING THE TOTAL AMOUNTS OF FUEL AND AIR SO THAT THE GREATER PART OF THE METALLIC OXIDES IS REDUCED TO METAL, ADJUSTING THE COMPOSITION OF THE BED SO THAT THE SLAG MATRIX FORMED ON SINTERING IS FLUID ENOUGH TO ENVELOPE THE LIBERATED METAL AND PREVENT REOXIDATION, AND MAINTAINING THE MAXIMUM BED TEMPERATURE BETWEEN 1100 AND 1500*C.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |