Patent US3262776A successfully refreshed from Google Patents.
US3262776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medium carbon vanadium steel
Assignee: Thornhill Craver Co
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Filing: 1963-05-09
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Granted: 1966-07-26
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Expires: 1983-05-09
Abstract
No abstract record available.
Inventors
- 👤 John E Loeffler
- 👤 Obert L Nordin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:33
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A STEEL CONTAINING ESSENTIALLY ABOUT 0.24% TO 0.35% CARBON; ABOUT 0.45% TO 1.15% MANGANESE; ABOUT 0.40% TO 0.60% SILICON; ABOUT 0.03% TO 0.15% VANADIUM; NOT MORE THAN ABOUT 0.05% PHOSPHOROUS, 0.06% SULPHUR, 0.50% COPPER, 0.50% NICKEL, 0.25% CHROMIUM, 0.25% MOLYBDENIUM PLUS TUNGSTEN; AND THE BALANCE ESSENTIALLY IRON; THE COMPOSITION HARDENABILITY INDEX OF ALL OF SAID ELEMENTS OTHER THAN IRON BEING BETWEEN ABOUT 2050 AND 2600; SAID VANADIUM BEING IN SOLID SOLUTION IN THE MATRIX.
Claim 2
Dependent Claim
74 words
A STEEL CONTAINING ESSENTIALLY ABOUT 0.24% TO 0.35% CARBON; ABOUT 0.45% TO 1.15% MANGANESE; ABOUT 0.40% TO 0.60% SILICON; ABOUT 0.03% TO 0.15% VANADIUM; NOT MORE THAN ABOUT 0.05% PHOSPHOROUS, 0.06% SULPHUR, 0.50% COPPER, 0.50% NICKEL, 0.25% CHROMIUM, 0.25% MOLYBDENIUM PLUS TUNGSTEN; AND THE BALANCE ESSENTIALLY IRON; THE COMPOSITION HARDENABILITY INDEX OF ALL OF SAID ELEMENTS OTHER THAN IRON BEING BETWEEN ABOUT 2050 AND 2600; SAID VANADIUM BEING IN SOLID SOLUTION IN THE MATRIX.
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) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |