US2568744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demulsification process and composition
Assignee: Visco Products Co
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Filing: 1948-12-29
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Granted: 1951-09-25
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Expires: 1968-12-29
Abstract
No abstract record available.
Inventors
- 👤 Earl T Kocher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:47
CPC Classifications
C; C10; C10G; C10G33/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A PROCESS FOR THE RESOLUTION OF OIL-IN-WATER EMULSIONS WHICH COMPRISES SUBJECTING AN OIL-INWATER EMULSION TO THE ACTION OF A MOLECULARLY DEHYDRATED CONDENSATION PRODUCT OF THE REACTION OF 3% TO ABOUT 10% BY WEIGHT OF ZINC CHLORIDE AND THE RESIDUE REMAINING FROM THE REACTION OF AN ALKYLENE OXIDE HAVING AT LEAST TWO CARBON ATOMS AND AMMONIA AFTER THE REMOVAL OF MONOAMINES IN WHICH THE RATIO OF ALKYLENE OXIDE TO NITROGEN DOES NOT EXCEED 3:1.
Claim 2
Dependent Claim
73 words
A PROCESS FOR THE RESOLUTION OF OIL-IN-WATER EMULSIONS WHICH COMPRISES SUBJECTING AN OIL-INWATER EMULSION TO THE ACTION OF A MOLECULARLY DEHYDRATED CONDENSATION PRODUCT OF THE REACTION OF 3% TO ABOUT 10% BY WEIGHT OF ZINC CHLORIDE AND THE RESIDUE REMAINING FROM THE REACTION OF AN ALKYLENE OXIDE HAVING AT LEAST TWO CARBON ATOMS AND AMMONIA AFTER THE REMOVAL OF MONOAMINES IN WHICH THE RATIO OF ALKYLENE OXIDE TO NITROGEN DOES NOT EXCEED 3:1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |