Patent US3144448A successfully refreshed from Google Patents.
US3144448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isoxazole derivatives of sulfanilamide
Assignee: —
•
Filing: —
•
Granted: 1964-08-11
•
Expires: 1981-08-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:20
CPC Classifications
C; C07; C07D; C07D261/00; C07D261/02; C07D261/06; C07D261/10; C07D261/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
2 words
3-SULFANILAMIDO-4-IODO-5-LOWER ALKYLISOXAZOLE.
Claim 2
Dependent Claim
2 words
3-SULFANILAMIDO-4-IODO-5-LOWER ALKYLISOXAZOLE.
References Cited (Backward Citations)
US2494524A
Cited
US2525321A
Cited
US2888455A
Cited
US2883391A
Cited
US3073851A
Cited
US3073839A
Cited
US2988547A
Cited
US3072527A
Cited
US3048519A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |