Patent US3553259A successfully refreshed from Google Patents.
US3553259A
Expired / Lapsed
US
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Contrast media for cholecystography
Assignee: Bracco SpA
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Filing: 1968-05-14
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Granted: 1971-01-05
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Expires: 1988-05-14
Abstract
Abstract COMPOUNDS OF THE FORMULA 1,3,5-TRI(I-),2-(HOOC-CH(-R4)-O-R3-O-),4-(R2-CO-N(-R1)-)- BENZENE WHEREIN R1 AND R2 ARE LOWER ALKYL, R3 IS LOWER, DIVALENT ALKYLENE, AND R4 IS LOWER ALKYL OR PHENYL, AND THEIR SALTS WITH PHYSIOLOGICALLY TOLERATED METALS AND AMINES ARE RADIOPAQUE, TEND TO ACCUMULATE IN THE GALL BLADDER OF LIVING CREATURES, AND ARE NON-TOXIC IN EFFECTIVE AMOUNTS.
Inventors
- 👤 Ernst Felder
- 👤 David Pitre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:46
CPC Classifications
A; A61; A61K; A61K49/00; A61K49/04; A61K49/0433; A61K49/0447; A61K49/0495; C; C07; C07C; C07C255/00; C07C43/00; C07C43/02; C07C43/03; C07C43/14; C07C43/17; C07C43/174
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |