Patent US2564407A successfully refreshed from Google Patents.
US2564407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purified oils and processes of preparing same
Assignee: Minnesota Paints Inc
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Filing: 1947-05-12
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Granted: 1951-08-14
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Expires: 1967-05-12
Abstract
No abstract record available.
Inventors
- 👤 Fremont P Parkin
- 👤 George N Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:10
CPC Classifications
C; C11; C11B; C11B3/00; C11B3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
PROCESS OF PURIFYING NATURAL VEGETABLE OILS FOR SIMULTANEOUSLY REMOVING THE HYDROPHILIC AND WAXY COMPONENTS THEREOF WHICH COMPRISES CONTINUOUSLY CHILLING A STEAM OF SUCH OIL TO A TEMPERATURE WITHIN THE APPROXIMATE RANGE OF 20* F. TO 50* F. TO PRODUCE A CLOUDY PRECIPITATE THEREIN, MAINTAINING THE THUS CHILLED OIL AT A TEMPERATURE WITHIN SAID APPROXIMATE RANGE TO PREVENT THE CLOUDY PRECIPITATE FROM REDISSOLVING IN THE OIL, ADDING TO SAID CHILLED OIL AN QUEOUS REFINING AGENT CAPABLE OF PRODUCING FOOTS, THOROUGHLY MIXING THE OIL AND THE AQUEOUS REFINING AGENT AND CENTRIFUGING THE OIL AT A TEMPERATURE NOT SUBSTANTIALLY IN EXCESS OF 60* F. TO SEPARATE THE PRECIPITATED CLOUDY MATERIAL, THE ENTIRE PROCESS BEING CARRIED OUT WITHIN A FEW MINUTES.
Claim 2
Dependent Claim
117 words
PROCESS OF PURIFYING NATURAL VEGETABLE OILS FOR SIMULTANEOUSLY REMOVING THE HYDROPHILIC AND WAXY COMPONENTS THEREOF WHICH COMPRISES CONTINUOUSLY CHILLING A STEAM OF SUCH OIL TO A TEMPERATURE WITHIN THE APPROXIMATE RANGE OF 20* F. TO 50* F. TO PRODUCE A CLOUDY PRECIPITATE THEREIN, MAINTAINING THE THUS CHILLED OIL AT A TEMPERATURE WITHIN SAID APPROXIMATE RANGE TO PREVENT THE CLOUDY PRECIPITATE FROM REDISSOLVING IN THE OIL, ADDING TO SAID CHILLED OIL AN QUEOUS REFINING AGENT CAPABLE OF PRODUCING FOOTS, THOROUGHLY MIXING THE OIL AND THE AQUEOUS REFINING AGENT AND CENTRIFUGING THE OIL AT A TEMPERATURE NOT SUBSTANTIALLY IN EXCESS OF 60* F. TO SEPARATE THE PRECIPITATED CLOUDY MATERIAL, THE ENTIRE PROCESS BEING CARRIED OUT WITHIN A FEW MINUTES.
References Cited (Backward Citations)
US2223077A
Cited
US2425001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |