US2769839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of mercapto amines
Assignee: Monsanto Chemicals Ltd
•
Filing: 1950-06-23
•
Granted: 1956-11-06
•
Expires: 1970-06-23
Abstract
No abstract record available.
Inventors
- 👤 John K Fincke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:43
CPC Classifications
C; C07; C07C; C07C323/00; C07C323/23; C07C323/24; C07C323/25; C07C319/00; C07C319/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
THE PROCESS OF PREPARING COMPOUNDS HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
9 words
THE PROCESS OF PREPARING COMPOUNDS HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2086585A
Cited
CH204701A
Cited
US2186392A
Cited
US2187723A
Cited
US2336465A
Cited
US2355337A
Cited
US2416265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |