US3271402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon-z-thiobarbituric acids
Assignee: —
•
Filing: —
•
Granted: 1966-09-06
•
Expires: 1983-09-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:43
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/12; C07D; C07D471/00; C07D471/02; C07D471/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A HETEROCYCLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF MEMBERS HAVING THE FORMULA:
Claim 2
Dependent Claim
13 words
A HETEROCYCLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF MEMBERS HAVING THE FORMULA:
References Cited (Backward Citations)
GB510543A
Cited
US2153730A
Cited
US2219543A
Cited
US2527293A
Cited
US2802827A
Cited
US2868690A
Cited
US2899435A
Cited
US2744900A
Cited
US2808408A
Cited
US2887487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |