US2881165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
alpha-alpha-diphenyl-gamma-hexamethyleneiminobutyramide
Assignee: Nederlandsche Combinatie voor Chemische Industrie NV
•
Filing: 1957-06-18
•
Granted: 1959-04-07
•
Expires: 1977-06-18
Abstract
No abstract record available.
Inventors
- 👤 Paul A J Janssen
- 👤 Jongh David K De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:06
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/02; C07D295/027; C07D295/03; C07D295/04; C07D295/08; C07D295/084; C07D295/092; C07D295/10; C07D295/104; C07D295/14; C07D295/145
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |