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Patent US3622616A successfully refreshed from Google Patents.
US3622616A
Expired / Lapsed
US
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New benzoic acid derivatives
Assignee: Laboratoires Andre Guerbet
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Filing: 1967-11-27
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Granted: 1971-11-23
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Expires: 1987-11-27
Abstract
Abstract 2,4,6-TRIIODO-3-(N-hydroxy ethylcarbamyl)-5-acetylamino benzoic acid of formula IS USEFUL AS A RADIOGRAPHIC OPACIFIER.
Inventors
- 👤 Michel Guerbet
- 👤 Guy Tilly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:25
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/49; C07C205/57
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3145197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |