Patent US2232242A successfully refreshed from Google Patents.
US2232242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing fluorsparbearing metallurgical flux
Assignee: MAHONING MINING Co
•
Filing: 1939-02-14
•
Granted: 1941-02-18
•
Expires: 1959-02-14
Abstract
No abstract record available.
Inventors
- 👤 Fred A Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:47
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/04; C21C7/076; C22; C22B; C22B9/00; C22B9/10; Y; Y02; Y02P; Y02P10/00; Y02P10/20
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) | 1944-02-18 | 1944-08-19 | 1945-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-18 | 1948-08-19 | 1949-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-18 | 1952-08-19 | 1953-02-18 | $7700.00 | Window Closed / Lapsed |