US2799602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing stainless steel
Assignee: Allegheny Ludlum Steel Corp
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Filing: 1956-10-04
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Granted: 1957-07-16
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Expires: 1976-10-04
Abstract
No abstract record available.
Inventors
- 👤 Adolph J Lena
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:12
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/44; C21; C21D; C21D6/00; C21D6/004; C22C38/001; C22C38/02; C22C38/42; C22C38/46; C22C38/48; C22C38/58; C21D2211/00; C21D2211/001; C21D2211/008
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
86 words
IN THE PRODUCTION OF A STAINLESS STEEL ARTICLE COMPOSED OF FROM ABOUT 0.03% TO 0.15% CARBON, FROM ABOUT 12.0% TO 18.0% CHROMIUM, FROM ABOUT 3.5% TO 7.0% NICKEL, FROM ABOUT 2.45% TO 3.5% MAXIMUM MOLYBDENUM, UP TO ABOUT 0.5% MAXIMUM SILICON, FROM ABOUT 0.25% TO 2.0% MANGANESE, FROM ABOUT 0.05% TO 0.10% NITROGEN AND THE BALANCE IRON WITH INCIDENTAL IMPURITIES, THE STEPS COMPRISING, SELECTING A COMPOSITION WITHIN THE RANGE GIVEN TO PROVIDE A STEEL HAVING A STABILITY FACTOR IN THE RANGE BETWEEN -3.82 AND -4.65 WHEN
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) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |