Patent US2983601A successfully refreshed from Google Patents.
US2983601A
Expired / Lapsed
US
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Ferrous alloys and articles made therefrom
Assignee: Latrobe Steel Co
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Filing: 1954-09-14
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Granted: 1961-05-09
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Expires: 1974-09-14
Abstract
No abstract record available.
Inventors
- 👤 Stewart G Fletcher
- 👤 Raymond P Kells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:45
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A HIGH SPEED TOOL STEEL COMPRISING ABOUT .6 TO 2.5% CARBON, ABOUT 1% MAXIMUM SILICON, ABOUT 1% MAXIMUM MANGANESE, ABOUT .05 TO .5% SULPHUR, ABOUT .04% MAXIMUM PHOSPHORUS, ABOUT 2 TO 9% CHROMIUM, ABOUT .5 TO 7% VANADIUM, OPTIONAL TO ABOUT 24% TUNGSTEN PLUS 2 TO ABOUT 12% MOLYBDENUM, THE TOTAL TUNGSTEN PLUS 2 TIMES THE MOLYBEDENUM BEING ABOUT 8 TO 24%, OPTIONAL UP TO ABOUT 15% COBALT, THE REMAINDER IRON WITH RESIDUAL IMPURITIES IN USUAL AMOUNTS.
Claim 2
Dependent Claim
77 words
A HIGH SPEED TOOL STEEL COMPRISING ABOUT .6 TO 2.5% CARBON, ABOUT 1% MAXIMUM SILICON, ABOUT 1% MAXIMUM MANGANESE, ABOUT .05 TO .5% SULPHUR, ABOUT .04% MAXIMUM PHOSPHORUS, ABOUT 2 TO 9% CHROMIUM, ABOUT .5 TO 7% VANADIUM, OPTIONAL TO ABOUT 24% TUNGSTEN PLUS 2 TO ABOUT 12% MOLYBDENUM, THE TOTAL TUNGSTEN PLUS 2 TIMES THE MOLYBEDENUM BEING ABOUT 8 TO 24%, OPTIONAL UP TO ABOUT 15% COBALT, THE REMAINDER IRON WITH RESIDUAL IMPURITIES IN USUAL AMOUNTS.
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) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |