Patent US2802732A successfully refreshed from Google Patents.
US2802732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slag producing material and metallurgical method employing same to recover metal values from steel
Assignee: Individual
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Filing: 1953-12-04
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Granted: 1957-08-13
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Expires: 1973-12-04
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Crolius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:53
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/248
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE METHOD OF RECOVERING THE METAL VALUES IN THE DETRITUS FROM STAINLESS STEEL GRINDING OPERATIONS WHICH COMPRISES MIXING THE GRINDINGS INCLUDING METALLIC PARTICLES AND GRINDING WHEEL WASTE WITH ABOUT 10 TO 20% OF LOW ALUMINA PORTLAND CEMENT AND WATER SUFFICIENT TO FORM A MOLDABLE MIX, SHAPING THE MIX INTO BRICKS, DRYING THE SAME, FIRING THE BRICKS TO DEHYDRATE THE CEMENT AND INCIPIENTLY FUSE THE MASS, AND THEREAFTER ADDING SUCH BRICKS TO AN ELECTRIC FURNACE CHARGE OF STAINLESS STEEL.
Claim 2
Independent Claim
78 words
THE METHOD OF RECOVERING THE METAL VALUES IN THE DETRITUS FROM STAINLESS STEEL GRINDING OPERATIONS WHICH COMPRISES MIXING THE GRINDINGS INCLUDING METALLIC PARTICLES AND GRINDING WHEEL WASTE WITH ABOUT 10 TO 20% OF LOW ALUMINA PORTLAND CEMENT AND WATER SUFFICIENT TO FORM A MOLDABLE MIX, SHAPING THE MIX INTO BRICKS, DRYING THE SAME, FIRING THE BRICKS TO DEHYDRATE THE CEMENT AND INCIPIENTLY FUSE THE MASS, AND THEREAFTER ADDING SUCH BRICKS TO AN ELECTRIC FURNACE CHARGE OF STAINLESS STEEL.
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) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |