Patent US3026118A successfully refreshed from Google Patents.
US2853424A
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US
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X-ray contrast agents comprising symmetrical bifunctional analogs of nu-acyl derivatives of 2, 4, 6 triiodo-3-amino benzoic acid
Assignee: Bayer Pharma AG
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Filing: 1956-10-26
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Granted: 1958-09-23
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Expires: 1976-10-26
Abstract
No abstract record available.
Inventors
- 👤 Priewe Hans
- 👤 Rutkowski Rudi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:51
CPC Classifications
A; A61; A61K; A61K49/00; A61K49/04; A61K49/0433
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
19 words
X-RAY CONTRAST AGENT SELECTED FROM THE GROUP CONSISTING OF AN N-ACYL DERIVATIVE OF 2,4,6-TRIIODO-3-AMINO BENZOIC ACID OF THE FORMULA
References Cited (Backward Citations)
US2606922A
Cited
US2776241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |