Patent US2772243A successfully refreshed from Google Patents.
US2772243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antioxidant concentrates comprising reaction products of mixed glycerides as solvent carriers
Assignee: Eastman Kodak Co
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Filing: 1953-08-06
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Granted: 1956-11-27
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Expires: 1973-08-06
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Bentz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:20
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0092
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
AN ANTIOXIDANT SOLUTION CONSISTING OF THE REACTION PRODUCT OBTAINED BY HEATING A MIXTURE OF FROM 1 TO 3 MOLES OF PROPYLENE GLYCOL AND 1 MOLE OF MIXED GLYCERIDES OF ANIMAL AND VEGETABLE FATS AND OILS AT A TEMPERATURE OF FROM 100* TO 180* C., AT LEAST ONE GALLIC ACID ESTER SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
59 words
AN ANTIOXIDANT SOLUTION CONSISTING OF THE REACTION PRODUCT OBTAINED BY HEATING A MIXTURE OF FROM 1 TO 3 MOLES OF PROPYLENE GLYCOL AND 1 MOLE OF MIXED GLYCERIDES OF ANIMAL AND VEGETABLE FATS AND OILS AT A TEMPERATURE OF FROM 100* TO 180* C., AT LEAST ONE GALLIC ACID ESTER SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
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) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |