US2854716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of adding lead to steel
Assignee: Alco Products Inc
•
Filing: 1955-04-07
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Granted: 1958-10-07
•
Expires: 1975-04-07
Abstract
No abstract record available.
Inventors
- 👤 Charles R Funk
- 👤 Richard M Barnhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:35
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/0006; C22; C22C; C22C38/00; C22C38/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A METHOD OF MIXING LEAD WITH STEEL SO THAT THE LEAD WILL BE RETAINED IN THE STEEL IN A DISPERSED CONDITION WHICH COMPRISES PROVIDING A MOLD HAVING MEANS IN ITS BOTTOM PORTION TO PERMIT THE ENTRY OF MOLTEN MATERIAL TO FILL THE MOLD UPWARDLY, PROVIDING A SUBSTANTIALLY VERTICAL RUNNER IN COMMUNICATION WITH THE ENTRY MEANS IN THE MOLD, POURING MOLTEN STEEL INTO SAID RUNNER AT A RATE SUFFICIENT TO FORM A POOL OF MOLTEN STEEL IN THE BOTTOM
Claim 2
Independent Claim
78 words
A METHOD OF MIXING LEAD WITH STEEL SO THAT THE LEAD WILL BE RETAINED IN THE STEEL IN A DISPERSED CONDITION WHICH COMPRISES PROVIDING A MOLD HAVING MEANS IN ITS BOTTOM PORTION TO PERMIT THE ENTRY OF MOLTEN MATERIAL TO FILL THE MOLD UPWARDLY, PROVIDING A SUBSTANTIALLY VERTICAL RUNNER IN COMMUNICATION WITH THE ENTRY MEANS IN THE MOLD, POURING MOLTEN STEEL INTO SAID RUNNER AT A RATE SUFFICIENT TO FORM A POOL OF MOLTEN STEEL IN THE BOTTOM
References Cited (Backward Citations)
US1814584A
Cited
US2215734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |