US3684736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-foaming surface active compositions and method of preparing such compositions
Assignee: ROBERT L HUDDLESTON
•
Filing: 1970-09-10
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Granted: 1972-08-15
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Expires: 1990-09-10
Abstract
Abstract A SURFACE ACTIVE AGENT PRODUCED BY COMBINING AN ANIONIC SUFACTANT, VIZ, AN ANIONIC AMMONIUM ETHER SULFATE COMPOUND, WITH A CATIONIC SURFACTANT, VIZ, DODECYLBENZYLTRIMETHYLAMMONIUM CHLORIDE, TO FORM AN ELECTRONEUTRAL COMPLEX OF LOW SOLUBILITY IN WATER, AND PREFERABLY UTILIZED AS AN AQUEOUS SUSPENSION CONTAINING LESS THAN 1 WEIGHT PERCENT OF THE COMPLEX. D R A W I N G
Inventors
- 👤 William L Groves Jr
- 👤 Robert L Huddleston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:29
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/38; C11D1/65; C11D3/00; C11D3/0005; C11D3/0026; C11D1/02; C11D1/12; C11D1/29; C11D1/62; Y; Y10; Y10S; Y10S516/00; Y10S516/905; Y10S516/909; Y10S516/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |