Patent US2602028A successfully refreshed from Google Patents.
US2602028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Austenitic steels
Assignee: NL Industries Inc
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Filing: 1950-12-18
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Granted: 1952-07-01
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Expires: 1970-12-18
Abstract
No abstract record available.
Inventors
- 👤 Stephen F Urban
- 👤 George F Comstock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:17
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
AN AUSTENITIC ALLOY CONTAINING BY WEIGHT ABOUT 17 TO 19% OF CHROMIUM, ABOUT 11 TO 12% NICKEL, ABOUT 0.2% TO 2% MANGANESE, ABOUT 0.07% CARBON, ABOUT 0.38 TO 0.53% TITANIUM AND 0.01 TO 0.10% BORON, THE BALANCE BEING IRON.
Claim 2
Dependent Claim
39 words
AN AUSTENITIC ALLOY CONTAINING BY WEIGHT ABOUT 17 TO 19% OF CHROMIUM, ABOUT 11 TO 12% NICKEL, ABOUT 0.2% TO 2% MANGANESE, ABOUT 0.07% CARBON, ABOUT 0.38 TO 0.53% TITANIUM AND 0.01 TO 0.10% BORON, THE BALANCE BEING 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) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |