US2584966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chilling of oils
Assignee: ExxonMobil Oil Corp
•
Filing: 1948-09-10
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Granted: 1952-02-05
•
Expires: 1968-09-10
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Reeves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:50
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/02; C10G73/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
208 words
A METHOD OF DEWAXING A WAX-BEARING OIL, COMPRISING THE STEPS OF: BLENDING SAID OIL WITH A DEWAXING SOLVENT CONTAINING A MINOR PROPORTION OF AQUEOUS CONTAMINANT, CHILLING THE RESULTANT MIXTURE TO PRECIPITATE WAX THEREFROM, COOLING A SEPARATE SECONDARY PORTION OF SAID SOLVENT TO A TEMPERATURE JUST ABOVE THAT AT WHICH THE FORMATION OF ICE TAKES PLACE THEREIN, CONDUCTING SAID COOLED SECONDARY PORTION OF SOLVENT TO A SHOCKCHILLING ZONE MAINTAINED AT A TEMPERATURE BELOW THE FREEZING POINT OF WATER WITH AN INJECTED OILY CHILLING ZONE MAINTAINED AT A TEMPERATURE BELOW COOLING THE SHOCK-CHILLED SECONDARY PORTION OF SOLVENT TO A TEMPERATURE APPROXIMATELY EQUAL TO THAT OF THE PRIMARY CHILLED SOLVENT MIXTURE OF WAX AND OIL, ADDING THE COOLED SHOCK-CHILLED SECONDARY PORTION OF SOLVENT TO THE PRIMARY CHILLED SOLVENT MIXTURE OF WAX AND OIL, THE TEMPERATURES OF THE TWO SOLVENT MIXTURES BEING APPROXIMATELY IDENTICAL AT THIS POINT, FILTERING WAX FROM THE RESULTING COMPOSITE MIXTURE, YIELDING AN OIL-SOLVENT FILTRATE, RECYCLING SAID FILTRATE FOR USE AS THE AFORESAID OILY CHILLING AGENT TO YIELD, AS A RESULT OF THE INITIAL COOLING AND SUBSEQUENT SHOCK-CHILLING OF SAID SECONDARY PORTION OF SOLVENT, A SUSPENSION OF ICE CRYSTALS IN THE OIL-SOLVENT MIXTURE SO OBTAINED, THEREBY INHIBITING THE FORMATION OF A HARD, ADHERENT ICE IN THE AFORESAID SHOCK-CHILLING ZONE.
Claim 2
Independent Claim
208 words
A METHOD OF DEWAXING A WAX-BEARING OIL, COMPRISING THE STEPS OF: BLENDING SAID OIL WITH A DEWAXING SOLVENT CONTAINING A MINOR PROPORTION OF AQUEOUS CONTAMINANT, CHILLING THE RESULTANT MIXTURE TO PRECIPITATE WAX THEREFROM, COOLING A SEPARATE SECONDARY PORTION OF SAID SOLVENT TO A TEMPERATURE JUST ABOVE THAT AT WHICH THE FORMATION OF ICE TAKES PLACE THEREIN, CONDUCTING SAID COOLED SECONDARY PORTION OF SOLVENT TO A SHOCKCHILLING ZONE MAINTAINED AT A TEMPERATURE BELOW THE FREEZING POINT OF WATER WITH AN INJECTED OILY CHILLING ZONE MAINTAINED AT A TEMPERATURE BELOW COOLING THE SHOCK-CHILLED SECONDARY PORTION OF SOLVENT TO A TEMPERATURE APPROXIMATELY EQUAL TO THAT OF THE PRIMARY CHILLED SOLVENT MIXTURE OF WAX AND OIL, ADDING THE COOLED SHOCK-CHILLED SECONDARY PORTION OF SOLVENT TO THE PRIMARY CHILLED SOLVENT MIXTURE OF WAX AND OIL, THE TEMPERATURES OF THE TWO SOLVENT MIXTURES BEING APPROXIMATELY IDENTICAL AT THIS POINT, FILTERING WAX FROM THE RESULTING COMPOSITE MIXTURE, YIELDING AN OIL-SOLVENT FILTRATE, RECYCLING SAID FILTRATE FOR USE AS THE AFORESAID OILY CHILLING AGENT TO YIELD, AS A RESULT OF THE INITIAL COOLING AND SUBSEQUENT SHOCK-CHILLING OF SAID SECONDARY PORTION OF SOLVENT, A SUSPENSION OF ICE CRYSTALS IN THE OIL-SOLVENT MIXTURE SO OBTAINED, THEREBY INHIBITING THE FORMATION OF A HARD, ADHERENT ICE IN THE AFORESAID SHOCK-CHILLING ZONE.
References Cited (Backward Citations)
US2356346A
Cited
US2284607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |