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US3666865A
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Stabilized trans-diethylstilbestrol formulations
Assignee: Eli Lilly and Co
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Filing: 1970-05-13
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Granted: 1972-05-30
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Expires: 1990-05-13
Abstract
Abstract The isomerization of trans-diethylstilbestrol to the inactive cis isomer in animal feed compositions is substantially inhibited by the addition of the combination of a phenolic antioxidant compound and a nitrogen compound or a base or basic salt.
Inventors
- 👤 Nelson H Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:56
CPC Classifications
A; A01; A01N; A01N31/00; A01N31/08; C; C07; C07C; C07C31/00; A61; A61K; A61K31/00; A61K31/045; A61K31/05; C07C31/18; C07C31/20; C08; C08K; C08K5/00; C08K5/04; C08K5/13
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
57 words
The stabilized composition of claim 1 which comprises the phenolic antioxidant compound as defined in claim 1 and a nitrogen compound selected from the group consisting of urea, ammonium hydroxide and an amine of the formula wherein R1, R2, and R3 can be the same or different and are, hydrogen, C1-C12 alkyl, C2-C5 hydroxyalkyl and C2-C6 aminoalkyl.
Claim 2
Dependent Claim
12 words
The composition of claim 2 wherein the phenolic antioxidant compound is 2,4,5-trihydroxybutyrophenone.
Claim 3
Dependent Claim
11 words
The composition of claim 3 wherein the nitrogen compound is urea.
Claim 4
Dependent Claim
21 words
The composition of claim 4 wherein the edible carrier is polyethylene glycol having a molecular weight of from 200 - 600.
Claim 5
Dependent Claim
12 words
The composition of claim 4 wherein the edible carrier is alfalfa granules.
Claim 6
Dependent Claim
19 words
The composition of claim 1 wherein the phenolic antioxidant compound is 2,4,5-trihydroxybutyrophenone and the basic salt is sodium carbonate.
Claim 7
Dependent Claim
19 words
The composition of claim 1 wherein the phenolic antioxidant compound is 2,4,5-trihydroxybutyrophenone and the nitrogen containing compound is 2-aminobutane.
References Cited (Backward Citations)
US3042525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |