US2794018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New quinazoline derivatives
Assignee: —
•
Filing: —
•
Granted: 1957-05-28
•
Expires: 1974-05-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:21
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/70; C07D239/72; C07D239/95; C07D239/86; C07D239/94; A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/495; A61K31/505; A61K31/517
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
QUINAZOLINE DERIVATIVES OF THE FORMULA
Claim 2
Dependent Claim
5 words
QUINAZOLINE DERIVATIVES OF THE FORMULA
References Cited (Backward Citations)
CH133192A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |