Patent US2669581A successfully refreshed from Google Patents.
Patent US2597173A successfully refreshed from Google Patents.
US2597173A
Expired / Lapsed
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Titanium additions to stainless steels
Assignee: Allegheny Ludlum Steel Corp
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Filing: 1951-02-07
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Granted: 1952-05-20
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Expires: 1971-02-07
Abstract
No abstract record available.
Inventors
- 👤 Walter M Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:34
CPC Classifications
C; C21; C21C; C21C7/00; C22; C22C; C22C33/00; C22C33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROCESS FOR MAKING CHROMIUM-CONTAINING ALLOY STEEL HAVING A TITANIUM CONTENT IN THE FORM OF TITANIUM CARBIDE AND HAVING HIGHLY IMPROVED HOT WORKING PROPERTIES WHICH COMPRISES, PROVIDING A MOLTEN FERROUS METAL BATH, MELTING DOWN ALLOYING INGREDIENTS IN THE MOLTEN FERROUS METAL BATH UNDER A SLAG BLANKET TO PROVIDE A MOLTEN ALLOY BATH, MAKING ANY FURTHER ADDITIONS TO THE MOLTEN METAL ALLOY BATH, DIRECTLY INTRODUCING TITANIUM TO THE METAL OF THE MOLTEN ALLOY BATH, HOLDING THE TITANIUM-CONTAINING ALLOY BATH UNDER A SUPERNATANT SLAG BLANKET FOR A MINIMUM PERIOD OF ABOUT ONE HOUR AND UNTIL THE TITANIUM HAS FULLY DIFFUSED THROUGH THE MOLTEN METAL AND FORMED TITANIUM CARBIDE, AND TAPPING THE METAL OF THE BATH.
Claim 2
Dependent Claim
113 words
A PROCESS FOR MAKING CHROMIUM-CONTAINING ALLOY STEEL HAVING A TITANIUM CONTENT IN THE FORM OF TITANIUM CARBIDE AND HAVING HIGHLY IMPROVED HOT WORKING PROPERTIES WHICH COMPRISES, PROVIDING A MOLTEN FERROUS METAL BATH, MELTING DOWN ALLOYING INGREDIENTS IN THE MOLTEN FERROUS METAL BATH UNDER A SLAG BLANKET TO PROVIDE A MOLTEN ALLOY BATH, MAKING ANY FURTHER ADDITIONS TO THE MOLTEN METAL ALLOY BATH, DIRECTLY INTRODUCING TITANIUM TO THE METAL OF THE MOLTEN ALLOY BATH, HOLDING THE TITANIUM-CONTAINING ALLOY BATH UNDER A SUPERNATANT SLAG BLANKET FOR A MINIMUM PERIOD OF ABOUT ONE HOUR AND UNTIL THE TITANIUM HAS FULLY DIFFUSED THROUGH THE MOLTEN METAL AND FORMED TITANIUM CARBIDE, AND TAPPING THE METAL OF THE BATH.
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) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |