US2621162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
J-propargyl-x-quinazolones and acid
Assignee: —
•
Filing: —
•
Granted: 1952-12-09
•
Expires: 1969-12-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:28
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/70; C07D239/72; C07D239/86; C07D239/88; C07D239/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
NEW COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF THE 3-PROPARGYL-4-QUINAZOLONES AND ACID ADDITION SALTS THEREOF.
Claim 2
Dependent Claim
15 words
NEW COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF THE 3-PROPARGYL-4-QUINAZOLONES AND ACID ADDITION SALTS THEREOF.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |