Patent US3173936A successfully refreshed from Google Patents.
US3173936A
Expired / Lapsed
US
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Winterizing glyceride oils
Assignee: Pennwalt Corp
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Filing: 1962-05-09
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Granted: 1965-03-16
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Expires: 1982-05-09
Abstract
No abstract record available.
Inventors
- 👤 William J Kirkpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:47
CPC Classifications
C; C11; C11B; C11B7/00; C11B7/0075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN A PROCESS FOR WINTERIZING GLYCERIDE OILS INCLUDING THE STEPS OF CHILLING THE OIL AT LEAST PARTLY IN RELATIVE QUIESCENCE TO SOLIDIFY HIGHER MELTING SUBSTANCES THEREIN AND CENTRIFUGING TO SEPARATE THE WINTERIZED OIL AND THE SOLIDIFIED PORTIONS, THE IMPROVEMENT OF SUPER COOLING THE CHILLED OIL WITH SOLID PORTIONS BY MOVING IT RAPIDLY THROUGH A SUPER-COOLING ZONE TO REDUCE ITS TEMPERATURE TO AT LEAST ABOUT 40*F., AND THEN IMMEDIATELY EFFECTING SAID CENTRIFUGING.
Claim 2
Dependent Claim
71 words
IN A PROCESS FOR WINTERIZING GLYCERIDE OILS INCLUDING THE STEPS OF CHILLING THE OIL AT LEAST PARTLY IN RELATIVE QUIESCENCE TO SOLIDIFY HIGHER MELTING SUBSTANCES THEREIN AND CENTRIFUGING TO SEPARATE THE WINTERIZED OIL AND THE SOLIDIFIED PORTIONS, THE IMPROVEMENT OF SUPER COOLING THE CHILLED OIL WITH SOLID PORTIONS BY MOVING IT RAPIDLY THROUGH A SUPER-COOLING ZONE TO REDUCE ITS TEMPERATURE TO AT LEAST ABOUT 40*F., AND THEN IMMEDIATELY EFFECTING SAID CENTRIFUGING.
References Cited (Backward Citations)
US2205381A
Cited
US2286354A
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US2286355A
Cited
US2435626A
Cited
US2425001A
Cited
US2610915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |