US2978319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High strength, low alloy steels
Assignee: General Electric Co
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Filing: 1959-11-06
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Granted: 1961-04-04
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Expires: 1979-11-06
Abstract
No abstract record available.
Inventors
- 👤 Winston H Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:23
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A HIGH STRENGTH, LOW ALLOY STEEL COMPRISING BY WEIGHT ABOUT 0.5-2% TOTAL OF MANGANESE, MOLYBDENUM AND VANADIUM, 0.45-0.55% CARBON, 4.5-7.5% NICKEL, 0.751.25% CHROMIUM, 1.75-2.25% SILICON, WITH THE BALANCE ESSENTIALLY IRON AND IMPURITIES.
Claim 2
Dependent Claim
32 words
A HIGH STRENGTH, LOW ALLOY STEEL COMPRISING BY WEIGHT ABOUT 0.5-2% TOTAL OF MANGANESE, MOLYBDENUM AND VANADIUM, 0.45-0.55% CARBON, 4.5-7.5% NICKEL, 0.751.25% CHROMIUM, 1.75-2.25% SILICON, WITH THE BALANCE ESSENTIALLY IRON AND IMPURITIES.
References Cited (Backward Citations)
US2534190A
Cited
GB703911A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |