US2806775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charging ore and the like and its preparation
Assignee: Illinois Clay Products Co
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Filing: 1954-02-01
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Granted: 1957-09-17
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Expires: 1974-02-01
Abstract
No abstract record available.
Inventors
- 👤 Howard F West
- 👤 John H Veale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:37
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE METHOD OF MAKING A CHARGING ORE FOR BLAST AND OPEN HEART FURNACES WHICH COMPRISES MIXING A MINOR PROPORTION BY WEIGHT CONCENTRATED SULPHURIC ACID INTO NATURAL IRON ORE FINES SAID MIX INTO CONTAINING 2-10% WATER CONTENT, OF PRESSING THE RESULTING MIX INTO BRICKS, AND OF HEATING THE BRICKS AT A TEMPERATURE ABOUT 1000* F. WHILE MAINTAINING SAID BRICKS IN A SUBSTANTIALLY VIBRATIONLESS CONDITION UNTIL CERAMIC BONDS ARE FORMED.
Claim 2
Independent Claim
68 words
THE METHOD OF MAKING A CHARGING ORE FOR BLAST AND OPEN HEART FURNACES WHICH COMPRISES MIXING A MINOR PROPORTION BY WEIGHT CONCENTRATED SULPHURIC ACID INTO NATURAL IRON ORE FINES SAID MIX INTO CONTAINING 2-10% WATER CONTENT, OF PRESSING THE RESULTING MIX INTO BRICKS, AND OF HEATING THE BRICKS AT A TEMPERATURE ABOUT 1000* F. WHILE MAINTAINING SAID BRICKS IN A SUBSTANTIALLY VIBRATIONLESS CONDITION UNTIL CERAMIC BONDS ARE FORMED.
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) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |