US3598576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making nodular iron
Assignee: MEEHANITE WORLDWIDE Corp
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Filing: 1968-08-13
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Granted: 1971-08-10
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Expires: 1988-08-13
Abstract
Abstract IMPROVING THE GRAPHITE NODULE COUNT AND REDUCING THE DEGENERATE GRAPHITE SHAPE IN THE PROCESS OF MAKING NOCULAR CAST IRON BY ADDING GERMANIUM, LEAD, SALTS OF THE TWO MATERIALS OF COMBINATIONS OF ALL, SO THAT THE AMOUNT OF LEAD OR GERMANIUM OR COMBINATIONS THEROF FALLS IN THE RANGE OF .002% BASED ON THE WEIGHT OF IRON.
Inventors
- 👤 William H Moore
- 👤 Harry H Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:51
CPC Classifications
C; C21; C21C; C21C1/00; C21C1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |