US3141767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel casting process and apparatus
Assignee: Lukens Inc
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Filing: 1960-09-29
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Granted: 1964-07-21
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Expires: 1980-09-29
Abstract
No abstract record available.
Inventors
- 👤 Charles R Funk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:13
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
THE PROCESS FOR PRODUCING LEADED STEEL WHICH COMPRISES INJECTING A CONTROLLED STREAM OF SOLID LEAD PARTICLES VARYING IN SIZE FROM 0.03 TO 0.09 INCH IN DIAMETER AT A VELOCITY OF AT LEAST 4000 FEET PER MINUTE THROUGH THE SURFACE OF MOLTEN STEEL AND INTO THE BODY OF STEEL, WHEREBY MELTING AND OXIDATION OF THE LEAD ON CONTACT WITH THE STEEL ARE AVOIDED AND THE LEAD IS DISPERSED THROUGHOUT THE STEEL.
Claim 2
Dependent Claim
70 words
THE PROCESS FOR PRODUCING LEADED STEEL WHICH COMPRISES INJECTING A CONTROLLED STREAM OF SOLID LEAD PARTICLES VARYING IN SIZE FROM 0.03 TO 0.09 INCH IN DIAMETER AT A VELOCITY OF AT LEAST 4000 FEET PER MINUTE THROUGH THE SURFACE OF MOLTEN STEEL AND INTO THE BODY OF STEEL, WHEREBY MELTING AND OXIDATION OF THE LEAD ON CONTACT WITH THE STEEL ARE AVOIDED AND THE LEAD IS DISPERSED THROUGHOUT THE STEEL.
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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |