Patent US1400849A successfully refreshed from Google Patents.
US1400849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous process for the manufacture of esters
Assignee: US Industrial Alcohol Co
•
Filing: 1918-08-07
•
Granted: 1921-12-20
•
Expires: 1938-08-07
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Backhaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:42
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/02; C07C69/12; B; B01; B01D; B01D3/00; B01D3/34; B01D3/36; C07C67/00; C07C67/08; C07C69/22
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) | 1924-12-19 | 1925-06-20 | 1925-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-12-19 | 1929-06-20 | 1929-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-12-19 | 1933-06-20 | 1933-12-20 | $7700.00 | Window Closed / Lapsed |