US2521856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antioxidant
Assignee: A W BRICKMAN
•
Filing: 1947-07-26
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Granted: 1950-09-12
•
Expires: 1967-07-26
Abstract
No abstract record available.
Inventors
- 👤 Henry R Kraybill
- 👤 Buell W Beadle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:57
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0092
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A MATERIAL NORMALLY SUBJECT TO THE DETERIORATING EFFECT OF OXIDATIVE RANCIDITY DUE TO ITS CONTENT OF GLYCERIDES OF FATTY ACIDS, STABILIZED BY THE PRESENCE OF (A) FROM .01 TO .02% BY WEIGHT BASED ON THE GLYCERIDE CONTENT OF TERITARY BUTYLATED HYDROQUINONE MONOALKYL ETHER WHEREIN THE ALKYL GROUP CONTAINS FROM 1 TO 4 CARBON ATOMS INCLUSIVE; (B) FRM .002 TO .005% BY WEIGHT OF HYDROQUINONE, (C) FROM .002 TO .005% BY WEIGHT OF AN ACIDIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CITRIC ACID, ASCORBIC ACID, OXALIC ACID, PHOSPHORIC ACID, ETHYL ACID PHOSPHATE AND TRIETHYL PHOSPHATE.
Claim 2
Dependent Claim
95 words
A MATERIAL NORMALLY SUBJECT TO THE DETERIORATING EFFECT OF OXIDATIVE RANCIDITY DUE TO ITS CONTENT OF GLYCERIDES OF FATTY ACIDS, STABILIZED BY THE PRESENCE OF (A) FROM .01 TO .02% BY WEIGHT BASED ON THE GLYCERIDE CONTENT OF TERITARY BUTYLATED HYDROQUINONE MONOALKYL ETHER WHEREIN THE ALKYL GROUP CONTAINS FROM 1 TO 4 CARBON ATOMS INCLUSIVE; (B) FRM .002 TO .005% BY WEIGHT OF HYDROQUINONE, (C) FROM .002 TO .005% BY WEIGHT OF AN ACIDIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CITRIC ACID, ASCORBIC ACID, OXALIC ACID, PHOSPHORIC ACID, ETHYL ACID PHOSPHATE AND TRIETHYL PHOSPHATE.
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) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |