US2579478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heterocyclic compounds
Assignee: —
•
Filing: —
•
Granted: 1951-12-25
•
Expires: 1968-12-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:32
CPC Classifications
C; C07; C07D; C07D279/00; C07D279/04; C07D279/06; C07D277/00; C07D277/02; C07D277/20; C07D277/22; C07D277/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A MEMBER OF THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
11 words
A MEMBER OF THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA
References Cited (Backward Citations)
US2402198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |