US2520264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted 3, 1-benz-2, 3, 4, 5-tetrahydroazepines
Assignee: MALTBIE LAB Inc
•
Filing: 1947-08-26
•
Granted: 1950-08-29
•
Expires: 1967-08-26
Abstract
No abstract record available.
Inventors
- 👤 Lewis A Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:58
CPC Classifications
C; C07; C07D; C07D223/00; C07D223/14; C07D223/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A COMPOUND OF THE CLASS CONSISTING OF AMINES OF THE FORMULA
Claim 2
Dependent Claim
11 words
A COMPOUND OF THE CLASS CONSISTING OF AMINES OF THE FORMULA
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) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |