Patent US2652332A successfully refreshed from Google Patents.
US2652332A
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Stabilization of lipoidal substances
Assignee: Individual
•
Filing: 1951-07-19
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Granted: 1953-09-15
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Expires: 1971-07-19
Abstract
No abstract record available.
Inventors
- 👤 Harold S Olcott
- 👤 Campbell Tod Wildy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:24
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/59; A23; A23B; A23B2/00; A23B2/70; A23B2/725; A23B2/729; A23B2/762; C; C11; C11B; C11B5/00; C11B5/0021; C11B5/0035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A PROCESS OF STABILIZING A CAROTENE-CONTAINING SUBSTANCE WHICH IS NORMALLY SUBJECTED TO OXIDATIVE DETERIORATION WHICH COMPRISES ADDING THERETO AN ANTIOXIDANT SELECTED FROM THE GROUP CONSISTING OF 2-AMINO-3-HYDROXY-BENZOIC ACID AND THE ESTERS THEREOF.
Claim 2
Dependent Claim
32 words
A PROCESS OF STABILIZING A CAROTENE-CONTAINING SUBSTANCE WHICH IS NORMALLY SUBJECTED TO OXIDATIVE DETERIORATION WHICH COMPRISES ADDING THERETO AN ANTIOXIDANT SELECTED FROM THE GROUP CONSISTING OF 2-AMINO-3-HYDROXY-BENZOIC ACID AND THE ESTERS THEREOF.
References Cited (Backward Citations)
US1864185A
Cited
US2340438A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |