Patent US3270019A successfully refreshed from Google Patents.
US3270019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thiaalkyl-substituted spiro
Assignee: —
•
Filing: —
•
Granted: 1966-08-30
•
Expires: 1983-08-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:58
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/02; C07D471/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
SPIRO(3'' - ACETYLYMERCAPTOMETHYL - CYCLOHEXANE-1''5(BARBITURIC ACID)).
Claim 2
Dependent Claim
6 words
SPIRO(3'' - ACETYLYMERCAPTOMETHYL - CYCLOHEXANE-1''5(BARBITURIC ACID)).
Claim 3
Dependent Claim
10 words
IN A PROCESS FOR PREPARING A COMPOUND OF THE FORMULA:
Claim 4
Dependent Claim
10 words
IN A PROCESS FOR PREPARING A COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
US2725380A
Cited
US2764585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |