US3362996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(2-(2-aminoethylthio)ethyl)ethylene-diamine and method of preparation
Assignee: Dow Chemical Co
•
Filing: 1965-06-14
•
Granted: 1968-01-09
•
Expires: 1985-06-14
Abstract
No abstract record available.
Inventors
- 👤 Fred N Teumac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:37
CPC Classifications
C; C07; C07C; C07C323/00; C07C323/23; C07C323/24; C07C323/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
1 words
N-(2-(2-AMINOETHYLTHIO)ETHYL)ETHYLENEDIAMINE.
Claim 2
Dependent Claim
1 words
N-(2-(2-AMINOETHYLTHIO)ETHYL)ETHYLENEDIAMINE.
References Cited (Backward Citations)
US2216958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |