US2763545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool steels
Assignee: Allegheny Ludlum Steel Corp
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Filing: 1955-06-10
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Granted: 1956-09-18
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Expires: 1975-06-10
Abstract
No abstract record available.
Inventors
- 👤 Breeler Walter Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:02
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A GRAPHIC TOOL STEEL COMPRISING ABOUT 0.50% TO 3.0% CARBON, ABOUT 0.10% TO 3.0% MANGANESE, ABOUT 0.50% TO 3.0% SILICON, ABOUT 0.05% TO 0.50% CHROMIUM, UP TO 3.0% OF METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM, TUNGSTEN AND VANADIUM, ABOUT 0.05% TO 0.25% SULFUR, NOT MORE THAN 0.05% MAXIMUM PHOSPHORUS, AND THE REMAINDER IRON, A PORTION OF THE CARBON BEING PRESENT IN THE FORM OF GRAPHITIC CARBON IN AN AMOUNT
Claim 2
Dependent Claim
71 words
A GRAPHIC TOOL STEEL COMPRISING ABOUT 0.50% TO 3.0% CARBON, ABOUT 0.10% TO 3.0% MANGANESE, ABOUT 0.50% TO 3.0% SILICON, ABOUT 0.05% TO 0.50% CHROMIUM, UP TO 3.0% OF METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM, TUNGSTEN AND VANADIUM, ABOUT 0.05% TO 0.25% SULFUR, NOT MORE THAN 0.05% MAXIMUM PHOSPHORUS, AND THE REMAINDER IRON, A PORTION OF THE CARBON BEING PRESENT IN THE FORM OF GRAPHITIC CARBON IN AN AMOUNT
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |