Patent US3155496A successfully refreshed from Google Patents.
US3155496A
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Manganese-molybdenum ductile steel
Assignee: IHI Corp
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Filing: 1962-04-20
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Granted: 1964-11-03
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Expires: 1982-04-20
Abstract
No abstract record available.
Inventors
- 👤 Nakamura Hajime
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:37
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/12; C22C38/04; C22C38/18; C22C38/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A MANGANESE-MOYLBDENUM LOW-ALLOY STEEL CONSISTING ESSENTIALLY OF, BY WEIGHT, 1.00% TO 2.00% MANGANESE, 0.30% TO 1.00% MOLYBDENUM, LESS THAN 0.25% CARBON, LESS THAN 0.60% SILICON, LESS THAN 0.030% PHOSPHORUS, LESS THAN 0.040% SULPHUR, 0.006% TO 0.10% PRECIPITATED ALUMINUM NITRIDE, LESS THAN 0.15% METALLIC ALUMINUM DISSOLVED IN SOLID SOLUTION, THE BALANCE IRON AND INCIDENTAL IMPURITIES,SAID STEEL HAVING A FINE FERRITE GRANULAR STRUCTURE THAT IS FINER THAN NUMBER 9 IN TERMS OF THE ASTM FERRITE GRAIN SIZE NUMBERING SYSTEM.
Claim 2
Dependent Claim
77 words
A MANGANESE-MOYLBDENUM LOW-ALLOY STEEL CONSISTING ESSENTIALLY OF, BY WEIGHT, 1.00% TO 2.00% MANGANESE, 0.30% TO 1.00% MOLYBDENUM, LESS THAN 0.25% CARBON, LESS THAN 0.60% SILICON, LESS THAN 0.030% PHOSPHORUS, LESS THAN 0.040% SULPHUR, 0.006% TO 0.10% PRECIPITATED ALUMINUM NITRIDE, LESS THAN 0.15% METALLIC ALUMINUM DISSOLVED IN SOLID SOLUTION, THE BALANCE IRON AND INCIDENTAL IMPURITIES,SAID STEEL HAVING A FINE FERRITE GRANULAR STRUCTURE THAT IS FINER THAN NUMBER 9 IN TERMS OF THE ASTM FERRITE GRAIN SIZE NUMBERING SYSTEM.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |