US3011940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing biologically active solutions
Assignee: ChampionX LLC
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Filing: 1958-09-02
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Granted: 1961-12-05
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Expires: 1978-09-02
Abstract
No abstract record available.
Inventors
- 👤 Carol H Bollenback
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:41
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/68; C07C37/70; C07C37/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE METHOD OF REMOVING INSOLUBLE INPURTIES FROM ALAKALINE WATER-ALCOHOL POLAR SOLVENT SOLUTIONS OF COMMERCIAL GRADES OF HALOGEN SUBSTITUTED PHENOLS WHICH CONSISTS OF EXTRACTING THE IMPURITIES BY CONTACTING THE SOLUTIONS WITH FROM 2% TO 5% BY WEIGHT OF WATER IMMISCIBLE, ALIPHATIC PETROLEUM NAPHTHA HAVING A BOILING RANGE FROM ABOUT 110*F. TO ABOUT 400*F. AND AN AROMATIC CONTENT NOT EXCEEDING 20%, ALLOWING THE ALIPHATIC PETROLEUM NAPHTHA TO SEPARATE FROM THE POLAR SOLVENT SOLUTIONS AND THEN REMOVING THE ALIPHATIC PETROLEUM NAPHTHA FROM THE SO-TREATED POLAR SOLVENT SOLUTIONS.
Claim 2
Independent Claim
84 words
THE METHOD OF REMOVING INSOLUBLE INPURTIES FROM ALAKALINE WATER-ALCOHOL POLAR SOLVENT SOLUTIONS OF COMMERCIAL GRADES OF HALOGEN SUBSTITUTED PHENOLS WHICH CONSISTS OF EXTRACTING THE IMPURITIES BY CONTACTING THE SOLUTIONS WITH FROM 2% TO 5% BY WEIGHT OF WATER IMMISCIBLE, ALIPHATIC PETROLEUM NAPHTHA HAVING A BOILING RANGE FROM ABOUT 110*F. TO ABOUT 400*F. AND AN AROMATIC CONTENT NOT EXCEEDING 20%, ALLOWING THE ALIPHATIC PETROLEUM NAPHTHA TO SEPARATE FROM THE POLAR SOLVENT SOLUTIONS AND THEN REMOVING THE ALIPHATIC PETROLEUM NAPHTHA FROM THE SO-TREATED POLAR SOLVENT SOLUTIONS.
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) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |