US2656358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antihistaminic substances
Assignee: Merck Sharp & Dohme LLC
•
Filing: 1950-08-07
•
Granted: 1953-10-20
•
Expires: 1970-08-07
Abstract
No abstract record available.
Inventors
- 👤 Sperber Nathan
- 👤 Papa Domenick
- 👤 Schwenk Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:08
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/06; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/36; C07D213/38; C07D277/00; C07D277/02; C07D277/20; C07D277/22; C07D277/28; C07D405/00; C07D405/02; C07D405/06; C07D409/00; C07D409/02; C07D409/06; C07D417/00; C07D417/02; C07D417/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
COMPOUNDS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
5 words
COMPOUNDS OF THE GENERAL 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) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |