US2538322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha - cyclopropylethf
Assignee: —
•
Filing: —
•
Granted: 1951-01-16
•
Expires: 1968-01-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:50
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/46; C07D239/60; C07D239/66; C07D239/68; C07D239/62; C07D239/64; C07D417/00; C07D417/02; C07D417/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A BARBITURIC COMPOUND REPRESENTED BY TH FOLLOWING FORMULA
Claim 2
Dependent Claim
8 words
A BARBITURIC COMPOUND REPRESENTED BY TH FOLLOWING FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-15 | 1954-07-17 | 1955-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-15 | 1958-07-17 | 1959-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-15 | 1962-07-17 | 1963-01-16 | $7700.00 | Window Closed / Lapsed |