US2589223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxy-tetrahydro-naphthoyl-alkanoic acids
Assignee: GD Searle LLC
•
Filing: 1949-02-12
•
Granted: 1952-03-18
•
Expires: 1969-02-12
Abstract
No abstract record available.
Inventors
- 👤 Robert R Burtner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:30
CPC Classifications
C; C07; C07C; C07C35/00; C07C35/22; C07C35/23; C07C35/36; C07C59/00; C07C59/40; C07C59/76; C07C59/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A MEMBER OF THE GROUP CONSISTING OF HYDROXY-TETRAHYDRONAPHTHOYLALKANOIC ACID OF THE FORMULA
Claim 2
Dependent Claim
12 words
A MEMBER OF THE GROUP CONSISTING OF HYDROXY-TETRAHYDRONAPHTHOYLALKANOIC ACID OF 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) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |