Patent US3275433A successfully refreshed from Google Patents.
US3275433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel treating agent consisting of ba-ca-al-fe-mn-si
Assignee: Elkem Metals Co LP
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Filing: 1963-12-02
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Granted: 1966-09-27
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Expires: 1983-12-02
Abstract
No abstract record available.
Inventors
- 👤 Donald C Hilty
- 👤 Crafts Walter
- 👤 Solomon Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:27
CPC Classifications
C; C22; C22C; C22C28/00; C21; C21C; C21C7/00; C21C7/0006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
AN ALUMINUM-CONTAINING ALLOY ADDITION AGENT CONSISTING ESSENTIALLY OF ABOUT 7% TO 21% BARIUM; ABOUT 10% TO ABOUT 21% CALCIUM, THE AGGREGATE OF BARIUM AND CALCIUM BEING FROM ABOUT 17% TO ABOUT 40%; ABOUT 8% TO ABOUT 35% ALUMINUM, UP TO 25% IN THE AGGREGATE OF IRON AND MANGANESE, BALANCE SILICON.
Claim 2
Dependent Claim
50 words
AN ALUMINUM-CONTAINING ALLOY ADDITION AGENT CONSISTING ESSENTIALLY OF ABOUT 7% TO 21% BARIUM; ABOUT 10% TO ABOUT 21% CALCIUM, THE AGGREGATE OF BARIUM AND CALCIUM BEING FROM ABOUT 17% TO ABOUT 40%; ABOUT 8% TO ABOUT 35% ALUMINUM, UP TO 25% IN THE AGGREGATE OF IRON AND MANGANESE, BALANCE SILICON.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |