US3660408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis cyclic imides of 3-substituted 2 4 6-triiodoanilines
Assignee: STWB Inc
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Filing: 1969-07-14
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Granted: 1972-05-02
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Expires: 1989-07-14
Abstract
Abstract MONO AND BIS CYCLIC IMIDES AND ANILIC ACIDS OF 2,4,6-TRIIODOANILINES BEARING A SUBSTITUTED AMINO GROUP IN THE 3POSITION ARE PREPARED BY DECARBOXYLATION OF THE CORRESPONDING COMPOUNDS BEARING A CARBOXYL GROUP IN THE 5POSITION. THE PRODUCTS ARE USEFUL AS INTERMEDIATES AND AS CHOLECYSTOGAPHIC AGENTS.
Inventors
- 👤 James H Ackerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:33
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/44; C07D207/444; C07D207/448; C07D207/452; C07D211/00; C07D211/04; C07D211/80; C07D211/84; C07D211/86; C07D211/88; C07D265/00; C07D265/28; C07D265/30; C07D265/32; C07D265/33; C07D279/00; C07D279/10; C07D279/12
Claims Analysis
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References Cited (Backward Citations)
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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 |