US3145197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
5-acetamido-nu-alkyl-2, 4, 6-trhodoiso-phthalamic acid compounds
Assignee: Mallinckrodt Chemical Works
•
Filing: 1961-06-26
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Granted: 1964-08-18
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Expires: 1981-06-26
Abstract
No abstract record available.
Inventors
- 👤 Hoey George Brooke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:18
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/185; A61K31/19; A61K31/195; A61K49/00; A61K49/04; C; C07; C07C; C07C205/00; C07C205/49; C07C205/57; C07C233/00; C07C233/01; C07C233/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 5-ACETAMIDO-N-ALKYL-2,4,6-TRIIODOISOPHTHALAMIC ACIDS OF THE FORMULA:
Claim 2
Dependent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 5-ACETAMIDO-N-ALKYL-2,4,6-TRIIODOISOPHTHALAMIC ACIDS OF THE FORMULA:
References Cited (Backward Citations)
US2611786A
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US2680133A
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US2813118A
Cited
US2808433A
Cited
US2708678A
Cited
US2820814A
Cited
FR1172953A
Cited
GB820661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |