Patent US3262777A successfully refreshed from Google Patents.
US3262777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra tough maraging steel
Assignee: Huntington Alloys Corp
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Filing: 1964-07-13
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Granted: 1966-07-26
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Expires: 1984-07-13
Abstract
No abstract record available.
Inventors
- 👤 Sadowski Edward Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:47
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A MARAGING STEEL MANIFESTING A UNIQUE ABILITY TO ABSORB EXTREMELY HIGH LEVELS OF IMPACT ENERGY OF ABOUT (A) 75 FOOT-POUNDS AND ABOVE WHILE SIMULTANEOUSLY AFFORDING A HIGH LEVEL OF YIELD STRENGTH OF AT LEAST ABOUT 175,000 P.S.I., AND (B) ABOUT 50 FOOT-POUNDS AND ABOVE WHILE AFFORDING A YIELD STRENGTH OF ABOUT 200,000 P.S.O., AND CONSISTING ESSENTIALLY OF A COMPOSITION FALLING WITHIN THE FOLLOWING RANGES: ABOUT 11.5% TO 12.5% NICKEL, ABOUT 4.5% TO 5.5% CHROMIUM, ABOUT 2.75% TO 3.25% MOLYBDENUM, ABOUT 0.3% TO ABOUT 0.6% TO 3.25% ABOUT 0.15% TO ABOUT 0.25% TITANIUM, UP TO ABOUT 0.2%, COLUMBIUM, ABOUT 0.001% TO 0.03% CARBON, UP TO NOT MORE THAN 0.001% BORON AND UP TO NOT MORE THAN 0.05% ZIRCONIUM TO THEREBY GREATLY MINIMIZE THEIR INFLUENCE IN ADVERSELY AFFECTING THE TOUGHNESS CHARACTERISTICS OF SAID STEEL, UP TO 0.1% SILICON, UP TO 0.1% MANGANESE, AND THE BALANCE ESSENTIALLY IRON.
Claim 2
Dependent Claim
145 words
A MARAGING STEEL MANIFESTING A UNIQUE ABILITY TO ABSORB EXTREMELY HIGH LEVELS OF IMPACT ENERGY OF ABOUT (A) 75 FOOT-POUNDS AND ABOVE WHILE SIMULTANEOUSLY AFFORDING A HIGH LEVEL OF YIELD STRENGTH OF AT LEAST ABOUT 175,000 P.S.I., AND (B) ABOUT 50 FOOT-POUNDS AND ABOVE WHILE AFFORDING A YIELD STRENGTH OF ABOUT 200,000 P.S.O., AND CONSISTING ESSENTIALLY OF A COMPOSITION FALLING WITHIN THE FOLLOWING RANGES: ABOUT 11.5% TO 12.5% NICKEL, ABOUT 4.5% TO 5.5% CHROMIUM, ABOUT 2.75% TO 3.25% MOLYBDENUM, ABOUT 0.3% TO ABOUT 0.6% TO 3.25% ABOUT 0.15% TO ABOUT 0.25% TITANIUM, UP TO ABOUT 0.2%, COLUMBIUM, ABOUT 0.001% TO 0.03% CARBON, UP TO NOT MORE THAN 0.001% BORON AND UP TO NOT MORE THAN 0.05% ZIRCONIUM TO THEREBY GREATLY MINIMIZE THEIR INFLUENCE IN ADVERSELY AFFECTING THE TOUGHNESS CHARACTERISTICS OF SAID STEEL, UP TO 0.1% SILICON, UP TO 0.1% MANGANESE, AND THE BALANCE ESSENTIALLY IRON.
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 |