US1920564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agent for sizing textile fibers and alpha process of sizing textile fibers
Assignee: IG Farbenindustrie AG
•
Filing: 1931-11-24
•
Granted: 1933-08-01
•
Expires: 1951-11-24
Abstract
No abstract record available.
Inventors
- 👤 Jochum Kurt
- 👤 Voss Arthur
- 👤 Geier Hermann
- 👤 Dickhauser Ewald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:29
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/327; D06M15/333
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) | 1936-07-31 | 1937-01-30 | 1937-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-07-31 | 1941-01-30 | 1941-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-07-31 | 1945-01-30 | 1945-08-01 | $7700.00 | Window Closed / Lapsed |