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US3660464A
Expired / Lapsed
US
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Tri-iodinated diaminobenzoic acid derivatives
Assignee: ER Squibb and Sons LLC
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Filing: 1970-06-19
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Granted: 1972-05-02
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Expires: 1990-06-19
Abstract
Abstract THIS INVENTION RELATES TO NEW IODINATED DIAMINOBENZOIC ACID DERIVATIVES OF THE GENERAL FORMULA 1-(HOOC-),2,4,6-TRI(I-),3-(R2-N(-R3)-CO-N(-R1)-),5- ((2,4,6-TRI(I-),3-(R2-N(-R3)-CO-N(-R1)-),5-(HOOC-)- PHENYL)-N(-R)-CO-ALKYLENE-CO-N(-R)-)BENZENE AND TO SALTS AND LOWER ALKYL ESTERS OF THESE COMPOUNDS,
Inventors
- 👤 Jack Bernstein
- 👤 Kathryn Alice Losee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:19
CPC Classifications
A; A61; A61K; A61K49/00; A61K49/04; A61K49/0433; C; C07; C07C; C07C275/00; C07C275/28; C07C275/42
Claims Analysis
Total Claims: 0
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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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |