US3271394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha-indolyl-3-acetic acid esters
Assignee: Merck and Co Inc
•
Filing: 1964-12-31
•
Granted: 1966-09-06
•
Expires: 1984-12-31
Abstract
No abstract record available.
Inventors
- 👤 Shen Tsung-Ying
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:37
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/10; C07D209/18; C07D209/26; C07D209/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF FREE BASES AND PHARMACEUTICALLY ACCEPTABLE ACID ADDITION SALTS OF COMPOUNDS REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
22 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF FREE BASES AND PHARMACEUTICALLY ACCEPTABLE ACID ADDITION SALTS OF COMPOUNDS REPRESENTED BY THE FORMULA:
References Cited (Backward Citations)
US3161654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |