US2759935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted 3-phenyloxindoles
Assignee: Bristol Laboratories Inc
•
Filing: 1953-02-18
•
Granted: 1956-08-21
•
Expires: 1973-02-18
Abstract
No abstract record available.
Inventors
- 👤 Speeter Merrill Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:47
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/30; C07D209/32; C07D209/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE STRUCTURE
Claim 2
Dependent Claim
12 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE STRUCTURE
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) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |