Patent US2533033A successfully refreshed from Google Patents.
US2533033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N4-succinylsulfanilamidodiazines
Assignee: Sharp and Dohme Inc
•
Filing: 1943-02-18
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Granted: 1950-12-05
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Expires: 1963-02-18
Abstract
No abstract record available.
Inventors
- 👤 Maurice L Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:59
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/69
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2-(N4-SUCCINYISULFANILAMIDO)-4-METHYL-PYRIMIDINE AND 2-(N4-SUCCINYLSULFANILAMIDO)PYRAZINE.
Claim 2
Dependent Claim
11 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2-(N4-SUCCINYISULFANILAMIDO)-4-METHYL-PYRIMIDINE AND 2-(N4-SUCCINYLSULFANILAMIDO)PYRAZINE.
References Cited (Backward Citations)
US2323651A
Cited
GB510691A
Cited
GB515412A
Cited
FR843415A
Cited
US2300676A
Cited
GB547976A
Cited
US2351333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |