US3149147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel substituted phenylalkylamines
Assignee: Smith Kline & French Laboratories Ltd
•
Filing: 1961-03-16
•
Granted: 1964-09-15
•
Expires: 1981-03-16
Abstract
No abstract record available.
Inventors
- 👤 Elvin L Anderson
- 👤 Gordon Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:21
CPC Classifications
C; C07; C07C; C07C255/00; C07C255/49; C07C255/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
CHEMICAL COMPOUNDS SELECTED FRM THE GROUP CONSISTING OF A FREE BASE HAVING THE FORMULA:
Claim 2
Dependent Claim
14 words
CHEMICAL COMPOUNDS SELECTED FRM THE GROUP CONSISTING OF A FREE BASE HAVING 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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |