US3751373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Petroleum sulfonic acid foam control composition and its use
Assignee: Veolia WTS USA Inc
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Filing: 1970-12-29
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Granted: 1973-08-07
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Expires: 1990-12-29
Abstract
Abstract THE PRESENT INVENTION IS DIRECTED TO A COMPOSITION AND ITS USE FOR THE CONTROL OF FOAM IN AQUEOUS SYSTEMS AND IN PARTICULAR PULP AND PAPER MAKING SYSTEMS. THE METHOD GENERALLY COMPRISES ADDING TO THE AQUEOUS SYSTEM A COMPOSITION COMPRISING A WATER-INSOLUBLE ORGANIC LIQUID, AN ESTER OF POLYETHYLENE GLYCOL, A PETROLEUM SULFONIC ACID AND A TALLOW FATTY ACID AND/OR TALLOW FATTY ALCOHOL.
Inventors
- 👤 H Lieberman
- 👤 A Graffeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:12
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/06; D21H21/12; B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; D21H17/00; D21H17/02; D21H17/03; D21H17/04; D21H17/05; D21H17/06; D21H17/07; D21H17/09; D21H17/11
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |