US2785175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imidazolidinethiones
Assignee: Monsanto Chemicals Ltd
•
Filing: 1955-12-15
•
Granted: 1957-03-12
•
Expires: 1975-12-15
Abstract
No abstract record available.
Inventors
- 👤 John D Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:42
CPC Classifications
C; C07; C07D; C07D235/00; C07D235/02; C07D233/00; C07D233/04; C07D233/28; C07D233/30; C07D233/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
AN IMPROVED PROCESS FOR THE PREPARATION OF IMIDAZOLID NETHIONES WHICH COMPRISES REACTING APPROXIMATELY EQUIMOLECULAR PROPORTIONS OF (1) AN ALDEHYDE CYANOHYDRIN OF THE FORMULA RCH(OH)CN WHEREIN R IS CHOSEN FROM THE GROUP CONSISTING OF UNSUBSTITUTED ALKYL, ARYL, ALKARYL AND ARALKYL RADICALS, (2) A KETONE CHOSEN FROM THE GROUP CONSISTING OF KETONES OF THE FORMULA
Claim 2
Dependent Claim
53 words
AN IMPROVED PROCESS FOR THE PREPARATION OF IMIDAZOLID NETHIONES WHICH COMPRISES REACTING APPROXIMATELY EQUIMOLECULAR PROPORTIONS OF (1) AN ALDEHYDE CYANOHYDRIN OF THE FORMULA RCH(OH)CN WHEREIN R IS CHOSEN FROM THE GROUP CONSISTING OF UNSUBSTITUTED ALKYL, ARYL, ALKARYL AND ARALKYL RADICALS, (2) 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) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |