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US2540173A
Expired / Lapsed
US
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Cupola briquette
Assignee: Individual
•
Filing: 1948-12-14
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Granted: 1951-02-06
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Expires: 1968-12-14
Abstract
No abstract record available.
Inventors
- 👤 Olivo Mario
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:07
CPC Classifications
C; C21; C21C; C21C1/00; C21C1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A BRISQUETTE FOR ADDITION TO THE MELT IN THE MANUFACTURE OF CAST IRON CONSISTING ESSENTIALLY OF ABOUT 15-35% OF A FINELY DIVIDED CARBONACEOUS MATERIAL, ABOUT 25-50% OF CALCIUM SILICIDE, AND AN INORGANIC BINDER CAPABLE OF WITHSTANDING TEMPERATURES IN EXCESS OF 900* C.
Claim 2
Dependent Claim
42 words
A BRISQUETTE FOR ADDITION TO THE MELT IN THE MANUFACTURE OF CAST IRON CONSISTING ESSENTIALLY OF ABOUT 15-35% OF A FINELY DIVIDED CARBONACEOUS MATERIAL, ABOUT 25-50% OF CALCIUM SILICIDE, AND AN INORGANIC BINDER CAPABLE OF WITHSTANDING TEMPERATURES IN EXCESS OF 900* C.
References Cited (Backward Citations)
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US1065855A
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US1075135A
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US1666312A
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US1549828A
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US1499068A
Cited
US1869925A
Cited
US2020171A
Cited
US2352237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |