US3595968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphate ester additives for low foam nonionics
Assignee: Vista Chemical Co
•
Filing: 1969-06-09
•
Granted: 1971-07-27
•
Expires: 1989-06-09
Abstract
Abstract ORGANIC PHOSPHATE ESTER ADDITIVES, WHEN BLENDED WITH LOW FOAM MONIONIC COMPOUNDS, SUPPRESS FOAM GENERATED BY PROTEINACEOUS SOIL ON PARTICULES BEING CLEANED. THE ESTERS ARE PRODUCED BY PHOSPHORYLATION OF C16 TO C20 ALCOHOLS, THE 1-MOLE ETHYLENE OXIDE ADDUCT OF 16 TO 20 CARBON ALCOHOLS, THEIR BLENDS, AN ALCOHOL-1-MOLE ETHOXYLATE MIXTURE, OR A BLEND OF ETHYLENE OXIDE ADDUCTS OF A C16 TO C20 ALCOHOL WHEREIN THE 1-MOLE ADDUCT IS OPTIMIZED.
Inventors
- 👤 William L Groves Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:01
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/722; C11D1/02; C11D1/34; C11D1/345; C11D3/00; C11D3/0005; C11D3/0026
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |