Patent US2661283A successfully refreshed from Google Patents.
US2661283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithium treated cast iron
Assignee: Meehanite Metal Corp
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Filing: 1950-08-24
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Granted: 1953-12-01
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Expires: 1970-08-24
Abstract
No abstract record available.
Inventors
- 👤 Smalley Oliver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:37
CPC Classifications
C; C22; C22C; C22C37/00; C22C37/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
AN ARTICLE OF MANUFACTURE COMPRISING, CAST IRON CASTING CONTAINING LITHIUM AND UP .08% SULPHUR WHICH IF UNTREATED WITH SAID LITHIUM WOULD HAVE RESULTED IN A GRAY CAST IRON HAVING A FLAKE GRAPHITE STRUCTURE, SAID CASTING BEING CHARACTERIZED BY A SUBSTANTIALLY NODULARSPHERULITIC FORM OF GRAPHITE CONTAINING A NODULARIZING AGENT CONSISTING OF LITHIUM IN A RANGE BETWEEN .005%-.1%, AND HAVING A TENSILE STRENGTH OF OVER 50,000 P. S. I.
Claim 2
Dependent Claim
67 words
AN ARTICLE OF MANUFACTURE COMPRISING, CAST IRON CASTING CONTAINING LITHIUM AND UP .08% SULPHUR WHICH IF UNTREATED WITH SAID LITHIUM WOULD HAVE RESULTED IN A GRAY CAST IRON HAVING A FLAKE GRAPHITE STRUCTURE, SAID CASTING BEING CHARACTERIZED BY A SUBSTANTIALLY NODULARSPHERULITIC FORM OF GRAPHITE CONTAINING A NODULARIZING AGENT CONSISTING OF LITHIUM IN A RANGE BETWEEN .005%-.1%, AND HAVING A TENSILE STRENGTH OF OVER 50,000 P. S. I.
References Cited (Backward Citations)
DE658197C
Cited
US1869497A
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US2371564A
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US2485760A
Cited
US2527037A
Cited
US2488511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |