US4137416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-Acylamidoethyl-2-imidazolines
Assignee: Wyeth Holdings LLC
•
Filing: 1978-01-05
•
Granted: 1979-01-30
•
Expires: 1998-01-05
Abstract
Abstract 2-acylamidoethyl-2-imidazolines are disclosed which are desirable precursors for 2-vinyl-2-imidazolines.
Inventors
- 👤 Hans P. Panzer
- 👤 Kenny U. Acholonu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:49
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/04; C07D233/20; C07D233/24; C07D233/06; C07D233/08; C07D233/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
33 words
A compound of the structure ##STR10## wherein R is an alkyl group of about 1 to 5 carbon atoms and R 1 is hydrogen or alkyl of about 1 to 5 carbon atoms.
Claim 2
Dependent Claim
33 words
A compound of the structure ##STR10## wherein R is an alkyl group of about 1 to 5 carbon atoms and R 1 is hydrogen or alkyl of about 1 to 5 carbon atoms.
Claim 3
Dependent Claim
14 words
A compound of claim 1 wherein R is methyl and R 1 is hydrogen.
Claim 4
Dependent Claim
14 words
A compound of claim 1 wherein R is methyl and R 1 is methyl.
Claim 5
Dependent Claim
14 words
A compound of claim 1 wherein R is ethyl and R 1 is hydrogen.
Claim 6
Dependent Claim
14 words
A compound of claim 1 wherein R is propyl and R 1 is methyl.
References Cited (Backward Citations)
US3995044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |