Patent US4199561A successfully refreshed from Google Patents.
US4199561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated nutrients and medicaments for veterinary use
Assignee: Dow Chemical Co
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Filing: 1979-02-26
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Granted: 1980-04-22
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Expires: 1999-02-26
Abstract
Abstract An imidazoline modified styrene-acrylonitrile polymer composition which is substantially insoluble in aqueous media at about pH 6 or more but swellable or soluble at pH 3 or less is employed as a coating for nutrient or therapeutic substances for administration to ruminants. The substances thus are rendered resistant to attack and breakdown in the rumen yet remain susceptible to release and digestion within the abomasum or small intestine of the animal.
Inventors
- 👤 Harold H. Roth
- 👤 Peter W. Owen
- 👤 Thomas T. Chiu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:08
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/48; A61K9/50; A61K9/5005; A61K9/5021; A61K9/5026; A23; A23K; A23K40/00; A23K40/30; A23K40/35; A61K9/14; A61K9/16; A61K9/1605; A61K9/1629; A61K9/1635; C; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C08F2800/00; C08F2800/20
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
111 words
A nutrient or therapeutic orally administered composition for ruminant animals comprising the composition of a nutrient or therapeutic material and coated thereon an hydroxyethyl imidazoline modified styrene-acrylonitrile polymer composition containing from about 15 to about 35 weight percent polymerized acrylonitrile, from about 85 to about 65 weight percent styrene, having a molecular weight of from about 60,000 to about 200,000, which polymer contains from 14 to 23 mole percent hydroxyethyl imidazoline modification, said combination being of such form that the material is thereby rendered resistant to attack and breakdown within the rumen of the animal but remains susceptible to breakdown and digestion within the abomasum or small intestine of the animal.
Claim 2
Dependent Claim
111 words
A nutrient or therapeutic orally administered composition for ruminant animals comprising the composition of a nutrient or therapeutic material and coated thereon an hydroxyethyl imidazoline modified styrene-acrylonitrile polymer composition containing from about 15 to about 35 weight percent polymerized acrylonitrile, from about 85 to about 65 weight percent styrene, having a molecular weight of from about 60,000 to about 200,000, which polymer contains from 14 to 23 mole percent hydroxyethyl imidazoline modification, said combination being of such form that the material is thereby rendered resistant to attack and breakdown within the rumen of the animal but remains susceptible to breakdown and digestion within the abomasum or small intestine of the animal.
Claim 3
Dependent Claim
30 words
A composition as in claim 1, wherein the nutrient or therapeutic material is in the form of discrete bodies or particles having a substantially continuous surface coating of said polymer.
Claim 4
Dependent Claim
23 words
A composition as in claim 1, wherein the particles of the nutrient or therapeutic material are dispersed throughout a matrix of said polymer.
Claim 5
Dependent Claim
14 words
A composition as in claim 1, wherein said nutrient material is an amino acid.
Claim 6
Dependent Claim
12 words
A composition as in claim 4, wherein said amino acid is methionine.
Claim 7
Dependent Claim
13 words
A composition as in claim 1, wherein said therapeutic material is an antibotic.
Claim 8
Dependent Claim
13 words
A composition as in claim 1, wherein said therapeutic material is an anthelmintic.
Claim 9
Independent Claim
113 words
A method for treating ruminant animals comprising orally administering to the animal a nutrient or therapeutic composition or supplement comprising a combination of a nutrient or a therapeutic material having coated thereon an hydroxyethyl imidazoline modified styrene-acrylonitrile polymer composition containing from about 15 to about 35 weight percent polymerized acrylonitrile, from about 85 to about 65 weight percent styrene, having a molecular weight of from about 60,000 to about 200,000, which polymer contains from 14 to 23 mole percent hydroxyethyl imidazoline modification, the coated product thereby rendered resistant to attack and breakdown within the rumen of the animal while susceptible to breakdown and digestion within the abomasum or small intestine of the animal.
Claim 10
Independent Claim
113 words
A method for treating ruminant animals comprising orally administering to the animal a nutrient or therapeutic composition or supplement comprising a combination of a nutrient or a therapeutic material having coated thereon an hydroxyethyl imidazoline modified styrene-acrylonitrile polymer composition containing from about 15 to about 35 weight percent polymerized acrylonitrile, from about 85 to about 65 weight percent styrene, having a molecular weight of from about 60,000 to about 200,000, which polymer contains from 14 to 23 mole percent hydroxyethyl imidazoline modification, the coated product thereby rendered resistant to attack and breakdown within the rumen of the animal while susceptible to breakdown and digestion within the abomasum or small intestine of the animal.
Claim 11
Dependent Claim
30 words
A method as in claim 8, wherein the nutrient or therapeutic material is in the form of discrete bodies or particles having a substantially continuous surface coating of said polymer.
Claim 12
Dependent Claim
22 words
A method as in claim 8, wherein particles of the nutrient or therapeutic material are dispersed throughout a matrix of said polymer.
Claim 13
Dependent Claim
14 words
A method as in claim 8, wherein said nutrient material is an amino acid.
Claim 14
Dependent Claim
12 words
A method as in claim 11, wherein said amino acid is methionine.
Claim 15
Dependent Claim
13 words
A method as in claim 8, wherein said therapeutic material is an antibotic.
Claim 16
Dependent Claim
13 words
A method as in claim 8, wherein said therapeutic material is an anthelmintic.
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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) | 1983-04-22 | 1983-10-22 | 1984-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-22 | 1987-10-22 | 1988-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-22 | 1991-10-22 | 1992-04-22 | $7700.00 | Window Closed / Lapsed |