US3146090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing nodular iron using group iii metal hydride
Assignee: Crane Co
•
Filing: 1961-12-29
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Granted: 1964-08-25
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Expires: 1981-12-29
Abstract
No abstract record available.
Inventors
- 👤 Jerome J Kanter
- 👤 John P Magos
- 👤 Wilbur L Meinhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:59
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/08; C21; C21C; C21C1/00; C21C1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE PROCESS FOR PRODUCING IRON CASTINGS IN WHICH GRAPHITIC CARBON IS PRESENT IN THE NODULAR FORM AND WITH SUBSTANTIALLY NO SEPARATION OF FLAKE-LIKE GRAPHITIC CARBON WHICH COMPRISES THE STEPS OF PREPARING A BATH OF MOLTEN CAST IRON MIX, INTRODUCING INTO SAID BATH A SMALL BUT EFFECTIVE AMOUNT OF THE HYDRIDE OF A GROUP III METAL HAVING AN ENDOTHERMIC HEAT OF DECOMPOSITION SELECTED FROM THE CLASS CONSISTING OF LANTHANONS AND YTTRIUM, AND THEREAFTER CASTING METAL FROM SAID BATH TO PRODUCE A CASTING CONTAINING A SMALL BUT EFFECTIVE AMOUNT OF ADDITION AGENT AND CONTAINING GRAPHITE IN A COMPACTED FORM.
Claim 2
Dependent Claim
97 words
THE PROCESS FOR PRODUCING IRON CASTINGS IN WHICH GRAPHITIC CARBON IS PRESENT IN THE NODULAR FORM AND WITH SUBSTANTIALLY NO SEPARATION OF FLAKE-LIKE GRAPHITIC CARBON WHICH COMPRISES THE STEPS OF PREPARING A BATH OF MOLTEN CAST IRON MIX, INTRODUCING INTO SAID BATH A SMALL BUT EFFECTIVE AMOUNT OF THE HYDRIDE OF A GROUP III METAL HAVING AN ENDOTHERMIC HEAT OF DECOMPOSITION SELECTED FROM THE CLASS CONSISTING OF LANTHANONS AND YTTRIUM, AND THEREAFTER CASTING METAL FROM SAID BATH TO PRODUCE A CASTING CONTAINING A SMALL BUT EFFECTIVE AMOUNT OF ADDITION AGENT AND CONTAINING GRAPHITE IN A COMPACTED FORM.
References Cited (Backward Citations)
US2747990A
Cited
US3055756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |