Patent US2806036A successfully refreshed from Google Patents.
US2806036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparation of
Assignee: —
•
Filing: —
•
Granted: 1957-09-10
•
Expires: 1974-09-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:04
CPC Classifications
C; C07; C07D; C07D235/00; C07D235/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
AN IMPROVED PROCESS FOR THE PREPARTION OF IMIDAZOLIDINETHIONES WHICH COMPRISES REACTING (1) A KETONE CHOSEN FROM THE GROUP CONSISTING OF KETONES OF THE FORMULA
Claim 2
Dependent Claim
24 words
AN IMPROVED PROCESS FOR THE PREPARTION OF IMIDAZOLIDINETHIONES WHICH COMPRISES REACTING (1) A KETONE CHOSEN FROM THE GROUP CONSISTING OF KETONES 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) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |