Patent US2948604A successfully refreshed from Google Patents.
US2948604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel-free austenitic elevated temperature alloy
Assignee: Allegheny Ludlum Steel Corp
•
Filing: 1959-03-27
•
Granted: 1960-08-09
•
Expires: 1979-03-27
Abstract
No abstract record available.
Inventors
- 👤 Macfarlane Richard Reed
- 👤 Richard K Pitler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:27
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
AN AUSTENITIC IRON BASE NICKEL-FREE ALLOY SUITABLE FOR USE AT TEMPERATURES OF UP TO 1500*F. AND HAVING A COMPOSITION INCLUDING FROM ABOUT 0.20% TO ABOUT 0.35% CARBON, FROM ABOUT 10.0% TO ABOUT 15.0% MANGANESE, TO ABOUT 0.75% SILLICON, FROM ABOUT 11.5% TO ABOUT TO ABOUT 13.5% CHROMIUM, FROM ABOUT 2.0% TO ABOUT 3.5% MOLYBDENUM, FROM ABOUT 0.7% TO ABOUT 1.2% VANADIUM, FROM ABOUT 0.10% TO ABOUT 0.30% NITROGEN, FROM ABOUT 0.01% TO ABOUT 0.40% BORON AND THE BALANCE SUBSTANTIALLY IRON WITH INCIDENTAL IMPURITIES.
Claim 2
Dependent Claim
83 words
AN AUSTENITIC IRON BASE NICKEL-FREE ALLOY SUITABLE FOR USE AT TEMPERATURES OF UP TO 1500*F. AND HAVING A COMPOSITION INCLUDING FROM ABOUT 0.20% TO ABOUT 0.35% CARBON, FROM ABOUT 10.0% TO ABOUT 15.0% MANGANESE, TO ABOUT 0.75% SILLICON, FROM ABOUT 11.5% TO ABOUT TO ABOUT 13.5% CHROMIUM, FROM ABOUT 2.0% TO ABOUT 3.5% MOLYBDENUM, FROM ABOUT 0.7% TO ABOUT 1.2% VANADIUM, FROM ABOUT 0.10% TO ABOUT 0.30% NITROGEN, FROM ABOUT 0.01% TO ABOUT 0.40% BORON AND THE BALANCE SUBSTANTIALLY IRON WITH INCIDENTAL IMPURITIES.
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) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |