US2530810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of unsaponifiable matter from tall oil residue
Assignee: PPG Industries Inc
•
Filing: 1949-08-23
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Granted: 1950-11-21
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Expires: 1969-08-23
Abstract
No abstract record available.
Inventors
- 👤 Roger M Christenson
- 👤 Stewart W Gloyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:23
CPC Classifications
C; C11; C11D; C11D15/00; C09; C09F; C09F1/00; C11B; C11B13/00; C11B13/005; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A METHOD OF OBTAINING THE UNSAPONIFIABLE MATTER OF TALL OIL, WHICH METHOD COMPRISES SAPONIFYING WITH ALKALI A DISTILLATION RESIDUE OF TALL OIL COMPRISING 20 TO 50% FATTY ACIDS, 20 TO 50% ROSIN ACIDS AND 10 TO 30% UNSAPONIFIABLE MATTER, DISSOLVING THE RESULTANT SAPONIFIED MIXTURE IN WATER AND ISOPROPYL ALCOHOL TO GIVE A FINAL CONCENTRATION OF 7 TO 50% ISOPROPYL ALCOHOL, THEN COUNTER-CURRENTLY EXTRACTING THE UNSAPONIFIABLE MATTER FROM THE SOLUTION WITH NAPHTHA AND EVAPORATING OFF THE NAPHTHA FROM THE UNSAPONIFIABLE MATTER.
Claim 2
Independent Claim
80 words
A METHOD OF OBTAINING THE UNSAPONIFIABLE MATTER OF TALL OIL, WHICH METHOD COMPRISES SAPONIFYING WITH ALKALI A DISTILLATION RESIDUE OF TALL OIL COMPRISING 20 TO 50% FATTY ACIDS, 20 TO 50% ROSIN ACIDS AND 10 TO 30% UNSAPONIFIABLE MATTER, DISSOLVING THE RESULTANT SAPONIFIED MIXTURE IN WATER AND ISOPROPYL ALCOHOL TO GIVE A FINAL CONCENTRATION OF 7 TO 50% ISOPROPYL ALCOHOL, THEN COUNTER-CURRENTLY EXTRACTING THE UNSAPONIFIABLE MATTER FROM THE SOLUTION WITH NAPHTHA AND EVAPORATING OFF THE NAPHTHA FROM THE UNSAPONIFIABLE MATTER.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |