US2581868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(2-thenyl)-substituted ethylene diamines
Assignee: Monsanto Chemicals Ltd
•
Filing: 1946-10-04
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Granted: 1952-01-08
•
Expires: 1966-10-04
Abstract
No abstract record available.
Inventors
- 👤 Lucas P Kyrides
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:14
CPC Classifications
C; C07; C07D; C07D409/00; C07D409/02; C07D409/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
89 words
A COMPOUND FROM THE GROUP CONSISTING OF THE TERTIARY AMINES HAVING THE FORMULA: WHEREIN R1 REPRESENTS A RADICAL FROM THE GROUP CONSISTING OF PYRIDYL AND PICOLINYL RADICALS, R2 REPRESENTS A RADICAL FROM THE GROUP CONSISTING OF HYDROGEN AND ALKYL RADICALS CONTAINING 1-3 CARBON ATOMS, R3 REPRESENTS AN ALKYL RADICAL CONTAINING 1-3 CARBON ATOMS, R4 REPRESENTS A RADICAL FROM THE GROUP CONSISTING OF HYDROGEN, METHYL AND ETHYL RADICALS AND R5 AND R6 EACH REPRESENTS A RADICAL FROM THE GROUP CONSISTING OF HYDROGEN AND METHYL RADICALS, AND THE ACID SALTS THEREOF.
Claim 2
Dependent Claim
89 words
A COMPOUND FROM THE GROUP CONSISTING OF THE TERTIARY AMINES HAVING THE FORMULA: WHEREIN R1 REPRESENTS A RADICAL FROM THE GROUP CONSISTING OF PYRIDYL AND PICOLINYL RADICALS, R2 REPRESENTS A RADICAL FROM THE GROUP CONSISTING OF HYDROGEN AND ALKYL RADICALS CONTAINING 1-3 CARBON ATOMS, R3 REPRESENTS AN ALKYL RADICAL CONTAINING 1-3 CARBON ATOMS, R4 REPRESENTS A RADICAL FROM THE GROUP CONSISTING OF HYDROGEN, METHYL AND ETHYL RADICALS AND R5 AND R6 EACH REPRESENTS A RADICAL FROM THE GROUP CONSISTING OF HYDROGEN AND METHYL RADICALS, AND THE ACID SALTS THEREOF.
Claim 3
Independent Claim
22 words
A METHOD OF PREPARING N,N-DIMETHYL-N''-2PYRIDYL-N''-2 THENYL-ETHYLENEDIAMINE WHICH COMPRISES MIXING TOGETHER AND HEATING A 2-THENYL HALIDE AND AN ALKALI METAL SALT OF N,N-DIMETHYLN''-2-PYRIDYL-ETHYLENEDIAMINE.
Claim 4
Independent Claim
22 words
A METHOD OF PREPARING N,N-DIMETHYL-N''-2PYRIDYL-N''-2 THENYL-ETHYLENEDIAMINE WHICH COMPRISES MIXING TOGETHER AND HEATING A 2-THENYL HALIDE AND AN ALKALI METAL SALT OF N,N-DIMETHYLN''-2-PYRIDYL-ETHYLENEDIAMINE.
References Cited (Backward Citations)
US1757394A
Cited
US2406594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |