US3775445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface active agents
Assignee: Vista Chemical Co
•
Filing: 1972-01-14
•
Granted: 1973-11-27
•
Expires: 1992-01-14
Abstract
Abstract NOVEL SURFACE ACTIVE AGENTS ARE PROVIDED HAVING THE GENERAL FORMULA: 1-(M-O3S-),4-(R''-CH(-COO-M)-R-)BENZENE WHEREIN R IS A LINEAR ALKYL GROUP CONTAINING FROM ABOUT 2 TO 30 CARBON ATOMS, R'' IS A LINEAR ALKYL GROUP CONTAINING FROM ABOUT 1 TO 30 CARBON ATOMS, THE SUM OF R PLUS R'' BEING AT LEAST 9, AND M IS A CATION SELECTED FROM THE GROUP CONSISTING OF LI, NA, K, RB, CS, CA, MG, NH4 AND SUBSTITUTED AMMONIUM.
Inventors
- 👤 S Mcguire
- 👤 O Kerfoot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:15
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/02; C11D1/04; C07; C07C; C07C309/00; C07C309/01; C07C309/28; C07C309/57; C07C309/58; C11D1/12; C11D1/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |