US2236529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of alcohol amines
Assignee: EMULSOL Corp
•
Filing: 1939-07-22
•
Granted: 1941-04-01
•
Expires: 1959-07-22
Abstract
No abstract record available.
Inventors
- 👤 Albert K Epstein
- 👤 Katzman Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:29
CPC Classifications
C; C07; C07C; C07C233/00; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/46; A61K8/466; A61Q; A61Q19/00; C09; C09K; C09K23/00; C09K23/04; C11; C11D; C11D1/00
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) | 1944-03-31 | 1944-09-30 | 1945-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-03-31 | 1948-09-30 | 1949-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-03-31 | 1952-09-30 | 1953-04-01 | $7700.00 | Window Closed / Lapsed |