Patent US3555041A successfully refreshed from Google Patents.
US3555041A
Expired / Lapsed
US
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Imidazoline surfactant having amphoteric properties
Assignee: Individual
•
Filing: 1966-03-09
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Granted: 1971-01-12
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Expires: 1986-03-09
Abstract
Abstract 1-AMINOETHYL-2-IMIDAZOLINE AND 1-HYDROXYETHYL-2-IMIDAZOLINE DERIVATIVES WHICH ARE USEFUL AS SURFACTANTS.
Inventors
- 👤 Jacob Katz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:06
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/04; C07D233/06; C07D233/08; C07D233/12; C07D233/14; C07D233/16; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |