US2883381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New process for the production of hy-
Assignee: —
•
Filing: —
•
Granted: 1959-04-21
•
Expires: 1976-04-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:18
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
IN A PROCESS OF PRODUCING BARBITURIC ACID COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
11 words
IN A PROCESS OF PRODUCING BARBITURIC ACID COMPOUNDS OF THE FORMULA
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) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |