US2794020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
6-amino substituted 1, 2, 3, 4-tetrahydroquinolines
Assignee: Monsanto Chemicals Ltd
•
Filing: 1953-08-03
•
Granted: 1957-05-28
•
Expires: 1973-08-03
Abstract
No abstract record available.
Inventors
- 👤 James O Harris
- 👤 Ching C Tung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:21
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/58; C07D215/02; C07D215/16; C07D215/38; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3437
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
THE COMPOUNDS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
6 words
THE COMPOUNDS OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2381771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |