US2639232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Addition materials for iron and steel manufacture and method of use thereof
Assignee: Ohio Ferro-Alloys Corp
•
Filing: 1951-10-19
•
Granted: 1953-05-19
•
Expires: 1971-10-19
Abstract
No abstract record available.
Inventors
- 👤 James C Vignos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:52
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/0006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
AN ADDITION MATERIAL FOR MAKING CHROMIUM ADDITIONS TO A BATH OF MOLTEN STEEL COMPRISING A MIXTURE OF FINELY DIVIDED PARTICLES OF A HIGH CHROMIUM-CONTAINING FERRO-ALLOY COATED WITH A WETTING AGENT NOT EXCEEDING ABOUT 5% OF THE MIXTURE.
Claim 2
Dependent Claim
37 words
AN ADDITION MATERIAL FOR MAKING CHROMIUM ADDITIONS TO A BATH OF MOLTEN STEEL COMPRISING A MIXTURE OF FINELY DIVIDED PARTICLES OF A HIGH CHROMIUM-CONTAINING FERRO-ALLOY COATED WITH A WETTING AGENT NOT EXCEEDING ABOUT 5% OF THE MIXTURE.
References Cited (Backward Citations)
US1529669A
Cited
US2496074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |