US2694082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of continuously refining fatty oils with an inorganic acid
Assignee: Alfa Laval Holdings Amsterdam AB
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Filing: 1951-04-04
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Granted: 1954-11-09
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Expires: 1971-04-04
Abstract
No abstract record available.
Inventors
- 👤 Palmqvist Fredrik Teodor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:09
CPC Classifications
C; C11; C11B; C11B3/00; C11B3/02; C11B3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A CONTINUOUS PROCESS FOR REFINING FATTY OILS, IN WHICH A STREAM OF OIL IS PASSED SUCCESSIVELY THROUGH A DECOLORING STEP OF SHORT DURATION WHEREIN AN INORGANIC ACID IS FINELY DISPERSED THROUGH THE OIL WHILE MAINTAINING THE OIL BELOW A TEMPERATURE FAVORABLE TO SUBSTANTIAL SIDE-REACTIONS BETWEEN THE OIL AND THE ACID, A STEP OF LONGER DURATION IN WHICH THE MIXTURE FROM THE FIRST STEP IS PASSED THROUGH A QUIESCENT ZONE WHERE THE DISPERSED PARTICLES OF ACID SLUDGE FORMED IN THE FIRST STEP ARE AGGLOMERATED BUT ONLY INCOMPLETELY SO A STEP OF CENTRIFUGAL
Claim 2
Dependent Claim
91 words
A CONTINUOUS PROCESS FOR REFINING FATTY OILS, IN WHICH A STREAM OF OIL IS PASSED SUCCESSIVELY THROUGH A DECOLORING STEP OF SHORT DURATION WHEREIN AN INORGANIC ACID IS FINELY DISPERSED THROUGH THE OIL WHILE MAINTAINING THE OIL BELOW A TEMPERATURE FAVORABLE TO SUBSTANTIAL SIDE-REACTIONS BETWEEN THE OIL AND THE ACID, A STEP OF LONGER DURATION IN WHICH THE MIXTURE FROM THE FIRST STEP IS PASSED THROUGH A QUIESCENT ZONE WHERE THE DISPERSED PARTICLES OF ACID SLUDGE FORMED IN THE FIRST STEP ARE AGGLOMERATED BUT ONLY INCOMPLETELY SO A STEP OF CENTRIFUGAL
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) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |