Patent EP0049359A2 successfully refreshed from Google Patents.
US2554073A
Expired / Lapsed
US
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Method of extracting wax from cachaza
Assignee: Cuban-American Sugar Co
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Filing: 1947-05-29
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Granted: 1951-05-22
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Expires: 1967-05-29
Abstract
No abstract record available.
Inventors
- 👤 Oscar J Swenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:26
CPC Classifications
C; C11; C11B; C11B11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A METHOD OF EXTRACTING WAX FROM CACHAZA COMPRISING FLOWING FLUID CACHAZA DOWNWARD, WITH SUFFICIENT AGITATION TO KEEP IN FLUID STATE THROUGH A WAX-EXTRACTING ZONE MAINTAINED AT WAX-EXTRACTING TEMPERATURE, AND TRAVELING COUNTERCURRENT TO UPWARD MOVING WATER-IMMISCIBLE ORGANIC SOLVENT, REMOVING THE WAX-ENRICHED SOLVENT FROM SAID WAX-EXTRACTING ZONE, AND RECOVERING WAX FROM SAID WAX-ENRICHED SOLVENT.
Claim 2
Independent Claim
52 words
A METHOD OF EXTRACTING WAX FROM CACHAZA COMPRISING FLOWING FLUID CACHAZA DOWNWARD, WITH SUFFICIENT AGITATION TO KEEP IN FLUID STATE THROUGH A WAX-EXTRACTING ZONE MAINTAINED AT WAX-EXTRACTING TEMPERATURE, AND TRAVELING COUNTERCURRENT TO UPWARD MOVING WATER-IMMISCIBLE ORGANIC SOLVENT, REMOVING THE WAX-ENRICHED SOLVENT FROM SAID WAX-EXTRACTING ZONE, AND RECOVERING WAX FROM SAID WAX-ENRICHED SOLVENT.
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) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |