US2515860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing an antioxidant concentrate
Assignee: Nopco Chemical Co
•
Filing: 1947-01-22
•
Granted: 1950-07-18
•
Expires: 1967-01-22
Abstract
No abstract record available.
Inventors
- 👤 Buxton Loran Oid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:53
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN A PROCESS FOR PRODUCING AN ANTIOXIDANT CONCENTRATE, THE STEPS COMPRISING CONTACTING A CRUDE VEGETABLE OIL WITH AMMONIA, CONTACTING THE AMMONIA-TREATED OIL WITH A HIGHLY POLAR SOLVENT SELECTED FROM THE GROUP CONSISTING OF ISOPROPYL ALCOHOL, N-PROPYL ALCOHOL, ACETONE, DIACETONE ALCOHOL, ETHYL ACETATE, METHYL ACETATE, AND METHYL ETHYL KETONE, SAID SOLVENTS CONTAINING AT LEAST 10% OF WATER, AND SEPARATING A SOLVENT SOLUTION CONTAINING A HIGHLY ACTIVE ANTIOXIDANT EXTRACT FROM THE OIL.
Claim 2
Dependent Claim
70 words
IN A PROCESS FOR PRODUCING AN ANTIOXIDANT CONCENTRATE, THE STEPS COMPRISING CONTACTING A CRUDE VEGETABLE OIL WITH AMMONIA, CONTACTING THE AMMONIA-TREATED OIL WITH A HIGHLY POLAR SOLVENT SELECTED FROM THE GROUP CONSISTING OF ISOPROPYL ALCOHOL, N-PROPYL ALCOHOL, ACETONE, DIACETONE ALCOHOL, ETHYL ACETATE, METHYL ACETATE, AND METHYL ETHYL KETONE, SAID SOLVENTS CONTAINING AT LEAST 10% OF WATER, AND SEPARATING A SOLVENT SOLUTION CONTAINING A HIGHLY ACTIVE ANTIOXIDANT EXTRACT FROM THE OIL.
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) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |