US3634272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Systems for solubilizing water and halogenated aliphatic hydrocarbons
Assignee: Dow Chemical Co
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Filing: 1968-10-25
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Granted: 1972-01-11
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Expires: 1988-10-25
Abstract
Abstract WATER OR AQUEOUS ALKALI METAL HYDROXIDES, SALTS OR ACIDS CAN BE SOLUBILIZED AS CLEAR SOLUTIONS IN HYDROPHOBIC LIQUIDS SUCH AS CHLORINATED HYDROCARBON SOLVENTS BY THE USE OF UREA AS A SOLUBILIZING AID IN COMBINATION WITH A SURFACTANT SYSTEM CONSISTING OF AN ALIPHATIC DIPHENYL OXIDE SULFONIC OR ITS AR-CHLORINATED OR BROMINATED DERIVATIVES AND ONE OF SEVERAL WELL KNOWN SURFACTANTS, NEITHER CLASS OF WHICH WILL IN ITSELF SOLUBILIZE THE TWO PRINCIPAL INGREDIENTS.
Inventors
- 👤 Joseph C Valenta
- 👤 Alfred F Steinhauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:41
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/26; C11D3/32; C11D3/323; C11D1/00; C11D1/02; C11D1/12; C11D1/22; C11D1/24; C11D3/43; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/05
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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |