Patent US2933385A successfully refreshed from Google Patents.
US2933385A
Expired / Lapsed
US
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Process for the production of nodular cast iron
Assignee: Meehanite Metal Corp
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Filing: 1958-10-03
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Granted: 1960-04-19
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Expires: 1978-10-03
Abstract
No abstract record available.
Inventors
- 👤 William H Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:28
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
AN IMPROVED METHOD OF PRODUCING NODULAR CAST IRON FROM A GRAY CAST IRON MELT COMPRISING THE STEPS OF ADDING TO THE MELT AND AMOUNT OF TELLURIUM SUFFICIENT TO PRODUCE A WHITE AND MELT AND THEN GRAPHITIZING THE MELT WITH MAGNESIUM SILICON ALLOY IN AN AMOUNT EQUAL TO A VALUE LAYING IN THE RANGE OF FROM 30 TO 70 TIMES THE EQUIVALENT TELLURIUM ADDITION, SAID EQUIVALENT TELLURIUM ADDITION BEING THE ACTUAL TELLURIUM ADDITION, PLUS ONE-HALF OF THE SULPHUR CONTENT OF THE MELT MINUS 0.05 TIMES THE MANGANESE CONTENT OF THE MELT, AND FINALLY CASTING SAID TREATED MELT.
Claim 2
Dependent Claim
96 words
AN IMPROVED METHOD OF PRODUCING NODULAR CAST IRON FROM A GRAY CAST IRON MELT COMPRISING THE STEPS OF ADDING TO THE MELT AND AMOUNT OF TELLURIUM SUFFICIENT TO PRODUCE A WHITE AND MELT AND THEN GRAPHITIZING THE MELT WITH MAGNESIUM SILICON ALLOY IN AN AMOUNT EQUAL TO A VALUE LAYING IN THE RANGE OF FROM 30 TO 70 TIMES THE EQUIVALENT TELLURIUM ADDITION, SAID EQUIVALENT TELLURIUM ADDITION BEING THE ACTUAL TELLURIUM ADDITION, PLUS ONE-HALF OF THE SULPHUR CONTENT OF THE MELT MINUS 0.05 TIMES THE MANGANESE CONTENT OF THE MELT, AND FINALLY CASTING SAID TREATED MELT.
References Cited (Backward Citations)
GB680123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |