Patent US1954061A successfully refreshed from Google Patents.
US2085129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of colloidal metal hydroxides
Assignee: IG Farbenindustrie AG
•
Filing: 1934-07-10
•
Granted: 1937-06-29
•
Expires: 1954-07-10
Abstract
No abstract record available.
Inventors
- 👤 Stoewener Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:20
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/02; C01F7/34; C01B; C01B13/00; C01B13/14; C01B13/36
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) | 1940-06-28 | 1940-12-28 | 1941-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-06-28 | 1944-12-28 | 1945-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-06-28 | 1948-12-28 | 1949-06-29 | $7700.00 | Window Closed / Lapsed |