US3076705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing nodular iron
Assignee: MALLEABLE RES AND DEV FOUNDATI
•
Filing: 1960-02-08
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Granted: 1963-02-05
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Expires: 1980-02-08
Abstract
No abstract record available.
Inventors
- 👤 Bernard C Yearley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:50
CPC Classifications
C; C21; C21C; C21C1/00; C21C1/08; C21C1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
THE METHOD MAKING AS CAST NODULAR IRON COMPRISING THE STEPS OF CONTACTING THE MOLTEN METAL WITH A PETREATMENT SLAG COMPRISING 15% TO 21% BY WEIGHT OF HALOGEN OF CALCIUM, ACCOMPANIED BY 3% TO 10% CARBON, AND THE BALANCE CALCIUM MAGNESIUM CARBONATE IN A BASIC OR NEUTRAL VESSEL AND THEN INTRODUCING MAGNESIUM AS A NODULARIZING AGENT PRIOR TO POURING CASTINGS.
Claim 2
Independent Claim
59 words
THE METHOD MAKING AS CAST NODULAR IRON COMPRISING THE STEPS OF CONTACTING THE MOLTEN METAL WITH A PETREATMENT SLAG COMPRISING 15% TO 21% BY WEIGHT OF HALOGEN OF CALCIUM, ACCOMPANIED BY 3% TO 10% CARBON, AND THE BALANCE CALCIUM MAGNESIUM CARBONATE IN A BASIC OR NEUTRAL VESSEL AND THEN INTRODUCING MAGNESIUM AS A NODULARIZING AGENT PRIOR TO POURING CASTINGS.
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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |