US2790748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contrast agent
Assignee: Merck Sharp & Dohme LLC
•
Filing: 1952-05-13
•
Granted: 1957-04-30
•
Expires: 1972-05-13
Abstract
No abstract record available.
Inventors
- 👤 Papa Domenick
- 👤 Ginsberg Helen Florence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:06
CPC Classifications
C; C07; C07C; C07C57/00; C07C57/52; C07C57/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
AN X-RAY CONTRAST AGENT SUITABLE FOR VISUALIZATION OF THE GALL BLADDER BY THE ORAL ROUTE, AND COMPRISING A PHARMACEUTICAL CARRIER HAVING DISTRIBUTED THEREIN A MEMBER OF THE CLASS CONSISTING OF PROPIONIC ACIDS OF THE FORMULA
Claim 2
Dependent Claim
35 words
AN X-RAY CONTRAST AGENT SUITABLE FOR VISUALIZATION OF THE GALL BLADDER BY THE ORAL ROUTE, AND COMPRISING A PHARMACEUTICAL CARRIER HAVING DISTRIBUTED THEREIN A MEMBER OF THE CLASS CONSISTING OF PROPIONIC ACIDS OF THE FORMULA
References Cited (Backward Citations)
GB517382A
Cited
US2348231A
Cited
GB573377A
Cited
US2436270A
Cited
US2400433A
Cited
US2679531A
Cited
US2606922A
Cited
US2587540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |