US2776241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injectable x-ray contrast agents comprising salts of n-acyl derivatives of 2, 4, 6-triiodo-3-aminobenzoic acid
Assignee: Bayer Pharma AG
•
Filing: 1953-07-20
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Granted: 1957-01-01
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Expires: 1973-07-20
Abstract
No abstract record available.
Inventors
- 👤 Priewe Hans
- 👤 Rutkowski Rudi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:30
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/14; C07D295/145; C07D295/15; A; A61; A61K; A61K49/00; A61K49/04; A61K49/0433
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
X-RAY CONTRAST AGENTS SELECTED FROM THE GROUP CONSISTING OF AN N-ACYL DERIVATIVE OF 2,4,6-TRLLODO-3-AMINO BENZOIC ACID OF THE FOLLOWING FORMULA
Claim 2
Dependent Claim
20 words
X-RAY CONTRAST AGENTS SELECTED FROM THE GROUP CONSISTING OF AN N-ACYL DERIVATIVE OF 2,4,6-TRLLODO-3-AMINO BENZOIC ACID OF THE FOLLOWING FORMULA
References Cited (Backward Citations)
US2611786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |