US2948732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-heterocyclic compounds
Assignee: —
•
Filing: —
•
Granted: 1960-08-09
•
Expires: 1977-08-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:14
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/08; C07D211/18; C07D211/20; C07D211/22; C07D401/00; C07D401/02; C07D401/04; C07D211/26; C07D211/36; C07D211/40; C07D211/44; C07D211/46; C07D211/56; C07D211/58; C07D211/60; C07D211/62; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C07D401/12; C07D401/14; C07D405/00; C07D405/02; C07D405/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN N-HETEROCYCLIC COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
14 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN N-HETEROCYCLIC COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2811520A
Cited
GB798053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |