US2575013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of refined tall oil
Assignee: Millennium Petrochemicals Inc
•
Filing: 1947-08-01
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Granted: 1951-11-13
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Expires: 1967-08-01
Abstract
No abstract record available.
Inventors
- 👤 Hasselstrom Torsten
- 👤 Stoll Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:44
CPC Classifications
C; C09; C09F; C09F1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE METHOD FOR THE PRODUCTION OF A REFINED TALL OF WHICH COMPRISES ADMIXING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SULFURIC ACID AND SODIUM ACID SULFATE WITH AN INTIMATE MIXTURE OF AN AQUEOUS TALL OIL SOAP, CONTAINING STEROLS AND COLOR BODIES, AND A HYDROCARBON SOLVENT UNTIL THE PH VALUE OF THE AQUEOUS PHASE IS BELOW 7, PERMITTING THE MIXTURE TO STAND FOR A PERIOD SUFFICIENT FOR THE FORMATION OF AN AQUEOUS LOWER LAYER CONTAINING COLOR BODIES AND A SUPERNATANT LAYER CONTAINING TALL OIL DISSOLVED IN THE SOLVENT, DISCARDING THE LOWER AQUEOUS LAYER AND RECOVERING THE TALL OIL FROM THE SUPERNATANT SOLVENT LAYER.
Claim 2
Independent Claim
103 words
THE METHOD FOR THE PRODUCTION OF A REFINED TALL OF WHICH COMPRISES ADMIXING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SULFURIC ACID AND SODIUM ACID SULFATE WITH AN INTIMATE MIXTURE OF AN AQUEOUS TALL OIL SOAP, CONTAINING STEROLS AND COLOR BODIES, AND A HYDROCARBON SOLVENT UNTIL THE PH VALUE OF THE AQUEOUS PHASE IS BELOW 7, PERMITTING THE MIXTURE TO STAND FOR A PERIOD SUFFICIENT FOR THE FORMATION OF AN AQUEOUS LOWER LAYER CONTAINING COLOR BODIES AND A SUPERNATANT LAYER CONTAINING TALL OIL DISSOLVED IN THE SOLVENT, DISCARDING THE LOWER AQUEOUS LAYER AND RECOVERING THE TALL OIL FROM THE SUPERNATANT SOLVENT LAYER.
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) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |