US3206501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
(paraacyloxyphenoxy)-benzoic acid derivatives
Assignee: Takeda Pharmaceutical Co Ltd
•
Filing: 1961-11-15
•
Granted: 1965-09-14
•
Expires: 1981-11-15
Abstract
No abstract record available.
Inventors
- 👤 Masuda Katsutada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:03
CPC Classifications
C; C07; C07C; C07C65/00; C07C65/21; C07C69/00; C07C69/62; C07C69/63; C07C69/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
O-ACYL DERIVATIVES OF 3.5-DIIODO - 4-(3''-IODO-4''-HYDROXYPHENOXY)-BENZOIC ACID, WHEREIN THE ACYL GROUP IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF LOWER ALKANOYL AND HAVING UP TO 4 CARBON ATOMS, BENZOYL, TOLUYL, AND BENZYLCARBONYL.
Claim 2
Dependent Claim
33 words
O-ACYL DERIVATIVES OF 3.5-DIIODO - 4-(3''-IODO-4''-HYDROXYPHENOXY)-BENZOIC ACID, WHEREIN THE ACYL GROUP IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF LOWER ALKANOYL AND HAVING UP TO 4 CARBON ATOMS, BENZOYL, TOLUYL, AND BENZYLCARBONYL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |