US3138610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted imidazolines
Assignee: GAF Chemicals Corp
•
Filing: 1961-03-10
•
Granted: 1964-06-23
•
Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
- 👤 Dolores M Buc
- 👤 Earl P Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:37
CPC Classifications
C; C07; C07D; C07D403/00; C07D403/02; C07D403/06; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19; Y10S424/00; Y10S424/03; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
THE N(N-PYRROLIDONYL ALKYL) IMIDAZOLINE COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
8 words
THE N(N-PYRROLIDONYL ALKYL) IMIDAZOLINE COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
US2868727A
Cited
US2267965A
Cited
US2877179A
Cited
US2914427A
Cited
US2874074A
Cited
US2987522A
Cited
US2945863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |