US2932568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature alloy steel with improved room temperature properties
Assignee: Carpenter Steel Co
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Filing: 1958-05-13
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Granted: 1960-04-12
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Expires: 1978-05-13
Abstract
No abstract record available.
Inventors
- 👤 Wesley R Kegerise
- 👤 Gerald B Heydt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:32
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
84 words
A STEEL ALLOY CAPABLE OF BEING AGE-HARDENED AND IN ITS AGE-HARDENED CONDITION HAVING GOOD CORROSION RESISTANCE AND STRESS RUPTURE LIFE AT ELEVATED TEMPERATURES AS WELL AS GOOD DUCTILITY AND TENSILE STRENGTH AT ROOM TEMPERATURE, SAID ALLOY CONTAINING UP TO ABOUT 0.15% CARBON, SILICON AND MANGANESE EACH IN AN AMOUNT NOT NORE THAN 1%, ABOUT 9% TO 16% CHROMIUM, ABOUT 4.5% TO 5.35% OF AN ELEMENT SELECTED FROM THE CLASS CONSISTING OF MOLYBDENUM AND TUNGSTEN, ABOUT 0.6% TO 4.5% COPPER, AND THE REMAINDER SUBSTANTIALLY IRON.
Claim 2
Dependent Claim
84 words
A STEEL ALLOY CAPABLE OF BEING AGE-HARDENED AND IN ITS AGE-HARDENED CONDITION HAVING GOOD CORROSION RESISTANCE AND STRESS RUPTURE LIFE AT ELEVATED TEMPERATURES AS WELL AS GOOD DUCTILITY AND TENSILE STRENGTH AT ROOM TEMPERATURE, SAID ALLOY CONTAINING UP TO ABOUT 0.15% CARBON, SILICON AND MANGANESE EACH IN AN AMOUNT NOT NORE THAN 1%, ABOUT 9% TO 16% CHROMIUM, ABOUT 4.5% TO 5.35% OF AN ELEMENT SELECTED FROM THE CLASS CONSISTING OF MOLYBDENUM AND TUNGSTEN, ABOUT 0.6% TO 4.5% COPPER, AND THE REMAINDER SUBSTANTIALLY IRON.
Claim 3
Dependent Claim
84 words
A STEEL ALLOY CAPABLE OF BEING AGE-HARDENED AND IN ITS AGE-HARDENED CONDITION HAVING GOOD CORROSION RESISTANCE AND STRESS RUPTURE LIFE AT ELEVATED TEMPERATURES AS WELL AS GOOD DUCTILITY AND TENSILE STRENGTH AT ROOM TEMPERATURE, SAID ALLOY CONTAINING UP TO ABOUT 0.15% CARBON, SILICON AND MANGANESE EACH IN AN AMOUNT NOT MORE THAN 1%, ABOUT 9% TO 16% CHROMIUM, ABOUT 5.35% TO 6% OF AN ELEMENT SELECTED FROM THE CLASS CONSISTING OF MOLYBDENUM AND TUNGSTEN, ABOUT 1% TO 9% COBALT, AND THE REMAINDER SUBSTANTIALLY IRON.
Claim 4
Dependent Claim
84 words
A STEEL ALLOY CAPABLE OF BEING AGE-HARDENED AND IN ITS AGE-HARDENED CONDITION HAVING GOOD CORROSION RESISTANCE AND STRESS RUPTURE LIFE AT ELEVATED TEMPERATURES AS WELL AS GOOD DUCTILITY AND TENSILE STRENGTH AT ROOM TEMPERATURE, SAID ALLOY CONTAINING UP TO ABOUT 0.15% CARBON, SILICON AND MANGANESE EACH IN AN AMOUNT NOT MORE THAN 1%, ABOUT 9% TO 16% CHROMIUM, ABOUT 5.35% TO 6% OF AN ELEMENT SELECTED FROM THE CLASS CONSISTING OF MOLYBDENUM AND TUNGSTEN, ABOUT 1% TO 9% COBALT, AND THE REMAINDER SUBSTANTIALLY IRON.
Claim 5
Dependent Claim
89 words
A STEEL ALLOY CAPABLE OF BEING AGE-HARDENED AND IN ITS AGE-HARDENED CONDITION HAVING GOOD CORROSION RESISTANCE AND STRESS RUPTURE LIFE AT ELEVATED TEMPERATURES AS WELL AS GOOD DUCTILITY AND TENSILE STRENGTH AT ROOM TEMPERATURE, SAID ALLOY CONTAINING UP TO ABOUT 0.15% CARBON SILICON AND MANGANESE EACH IN AN AMOUNT NOT MORE THAN 1%, ABOUT 9% TO 16% CHROMIUM, ABOUT 5.35% TO 6% OF AN ELEMENT SELECTED FROM THE CLASS CONSISTING OF MOLYBDENUM AND TUNGSTEN, ABOUT 0.6% TO 4.5% COPPER, ABOUT 1% TO 9% COBALT, AND THE REMAINDER SUBSTANTIALLY IRON.
Claim 6
Dependent Claim
89 words
A STEEL ALLOY CAPABLE OF BEING AGE-HARDENED AND IN ITS AGE-HARDENED CONDITION HAVING GOOD CORROSION RESISTANCE AND STRESS RUPTURE LIFE AT ELEVATED TEMPERATURES AS WELL AS GOOD DUCTILITY AND TENSILE STRENGTH AT ROOM TEMPERATURE, SAID ALLOY CONTAINING UP TO ABOUT 0.15% CARBON SILICON AND MANGANESE EACH IN AN AMOUNT NOT MORE THAN 1%, ABOUT 9% TO 16% CHROMIUM, ABOUT 5.35% TO 6% OF AN ELEMENT SELECTED FROM THE CLASS CONSISTING OF MOLYBDENUM AND TUNGSTEN, ABOUT 0.6% TO 4.5% COPPER, ABOUT 1% TO 9% COBALT, AND THE REMAINDER SUBSTANTIALLY 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) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |