Patent US3003864A successfully refreshed from Google Patents.
US3003864A
Expired / Lapsed
US
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Method of sintering
Assignee: Bethlehem Steel Corp
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Filing: 1959-12-16
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Granted: 1961-10-10
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Expires: 1979-12-16
Abstract
No abstract record available.
Inventors
- 👤 Hobart M Kraner
- 👤 Robert A Limons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:42
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/16; C22B1/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
IN A PROCESS FOR TREATING A STICKY ORE WHICH IS NORMALLY UNSCREENABLE BY REASON OF HIGH NATURAL WATER CONTENT, THE SUCCESSION OF STEPS CONSISTING OF MIXING THE WET ORE WITH SUFFICIENT HOT SINTER RETURNS TO DRY THE ORE SUBSTANTIALLY TO A WATER CONTENT BETWEEN 3 AND 7.5%, SAID MIXTURE HAVING THEN A MEALY CONSISTENCY, SCREENING THE MIXTURE WHILE DRY TO REMOVE THE +3/16" MATERIAL, MOISTENING THE -3/16" FINES AND CONCURRENTLY PELLETIZING THE MOISTENED FINES, SINTERING THE PELLETIZED MATERIAL, PASSING THE
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) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |