US3338705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of hard burnt pellets having good abrasive strength
Assignee: GEA Group AG
•
Filing: 1967-03-23
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Granted: 1967-08-29
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Expires: 1987-03-23
Abstract
No abstract record available.
Inventors
- 👤 Meyer Kurt
- 👤 Struve George Von
- 👤 Reimann Guenther
- 👤 Boss Karl-Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:45
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/2406
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
PROCESS FOR THE PRODUCTION OF HARD-BURNED PELLETS HAVING HIGH ABRASIVE STRENGTH FROM IRON ORES, IRON ORE CONCENTRATES AND THE LIKE, AND USING AN INITIAL MATERIAL COMPOSED OF A MIXTURE OF ORES HAVING DIFFERENT CHEMICAL AND/OR PHYSICAL PROPERTIES, COMPRISING GRINDING ALL THE ORE COMPONENTS TOGETHER TO A FINE GRAIN MATERIAL IN WHICH FROM 20 TO 60% HAS A FINENESS OF LESS THAN 0.044 MM., FORMING MOIST ROUNDED PELLETS OF SAID MATERIAL, AND THEN HARD BURNING THE PELLETS AT A TEMPERATURE OF AT LEAST 1200*C.
Claim 2
Dependent Claim
83 words
PROCESS FOR THE PRODUCTION OF HARD-BURNED PELLETS HAVING HIGH ABRASIVE STRENGTH FROM IRON ORES, IRON ORE CONCENTRATES AND THE LIKE, AND USING AN INITIAL MATERIAL COMPOSED OF A MIXTURE OF ORES HAVING DIFFERENT CHEMICAL AND/OR PHYSICAL PROPERTIES, COMPRISING GRINDING ALL THE ORE COMPONENTS TOGETHER TO A FINE GRAIN MATERIAL IN WHICH FROM 20 TO 60% HAS A FINENESS OF LESS THAN 0.044 MM., FORMING MOIST ROUNDED PELLETS OF SAID MATERIAL, AND THEN HARD BURNING THE PELLETS AT A TEMPERATURE OF AT LEAST 1200*C.
References Cited (Backward Citations)
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Cited
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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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |