US2802827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfur containing barbituric acids
Assignee: —
•
Filing: —
•
Granted: 1957-08-13
•
Expires: 1974-08-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:13
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/46; C07D239/60; C07D239/62; C07D495/00; C07D495/02; C07D495/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
COMPOUNDS OF THE GROUP CONSISTING OF SUBSTITUTED BARBITURIC ACIDS AND THIOBARBITURIC ACIDS AND THE NONTOXIC, ANIONIC SALTS THEREOF IN WHICH THE FREE ACID FORM HAS THE STRUCTURE
Claim 2
Dependent Claim
27 words
COMPOUNDS OF THE GROUP CONSISTING OF SUBSTITUTED BARBITURIC ACIDS AND THIOBARBITURIC ACIDS AND THE NONTOXIC, ANIONIC SALTS THEREOF IN WHICH THE FREE ACID FORM HAS THE STRUCTURE
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) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |