US2683744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nu-alkoxyalkyl-beta-haloethylamines
Assignee: Smith Kline & French Laboratories Ltd
•
Filing: 1953-02-13
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Granted: 1954-07-13
•
Expires: 1973-02-13
Abstract
No abstract record available.
Inventors
- 👤 James F Kerwin
- 👤 Glenn E Ullyot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:15
CPC Classifications
C; C07; C07C; C07C217/00; C07C217/54; C07C217/56; C07C217/58; C07C211/00; C07C211/01; C07C211/26; C07C211/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A COMPOUND OF THE CLASS CONSISTING OF A FREE BASE AND THE ACID ADDITION SALTS THEREOF, THE FREE BASE HAVING THE FORMULA:
Claim 2
Dependent Claim
22 words
A COMPOUND OF THE CLASS CONSISTING OF A FREE BASE AND THE ACID ADDITION SALTS THEREOF, THE 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) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |