US3600159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nodular cast iron containing silicon and vanadium
Assignee: MEEHANITE WORLDWIDE Corp
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Filing: 1968-03-11
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Granted: 1971-08-17
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Expires: 1988-03-11
Abstract
Abstract AN IMPROVED CAST IRON PARTICULARLY ADAPTED FOR USE IN ARTICLES OCCUPYING A HIGH TEMPERATURE ENVIRONMENT AND COMPRISING ABOUT 3.50% TO 5.00% SILICON; ABOUT 0.70% TO 2.00% VANADIUM; AND ABOUT 2.80% TO 3.80% CARBON; THE GRAPHITE IN THE NODULAR FORM AND THE EXCESS CARBIDES ARE IN THE FORM OF RANDOMLY DISTRIBUTED, GENERALLY CUBICAL SHAPES, IN A PEARLITIC MATRIX.
Inventors
- 👤 William H Moore
- 👤 Walter E Gruver Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:10
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/16; C; C22; C22C; C22C37/00; C22C37/04; C22C37/10; E05; E05C; E05C19/00; E05C19/16; F; F01; F01L; F01L3/00; F01L3/02
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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |