Patent US1878013A successfully refreshed from Google Patents.
US1878013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of anhydrous metal chlorides
Assignee: IG Farbenindustrie AG
•
Filing: 1927-06-21
•
Granted: 1932-09-20
•
Expires: 1947-06-21
Abstract
No abstract record available.
Inventors
- 👤 Staib Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:56
CPC Classifications
C; C01; C01G; C01G1/00; C01G1/06; C01F; C01F7/00; C01F7/48; C01F7/56; C01F7/58; C01F7/60
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) | 1935-09-20 | 1936-03-21 | 1936-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-09-20 | 1940-03-21 | 1940-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-09-20 | 1944-03-21 | 1944-09-20 | $7700.00 | Window Closed / Lapsed |