US1549313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of desulphurizing iron, steel, and ferro-alloys and composition of matter for use therein
Assignee: JACKSON
•
Filing: 1923-04-13
•
Granted: 1925-08-11
•
Expires: 1943-04-13
Abstract
No abstract record available.
Inventors
- 👤 Daniel D Jackson
- 👤 Joseph D Sears
- 👤 Conlin Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:11
CPC Classifications
C; C21; C21C; C21C1/00; C21C1/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1928-08-10 | 1929-02-09 | 1929-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-08-10 | 1933-02-09 | 1933-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-08-10 | 1937-02-09 | 1937-08-11 | $7700.00 | Window Closed / Lapsed |