Patent US1895421A successfully refreshed from Google Patents.
Patent US3829564A successfully refreshed from Google Patents.
US3829564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated products for veterinary use
Assignee: Commonwealth Scientific and Industrial Research Organisation
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Filing: 1973-02-14
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Granted: 1974-08-13
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Expires: 1993-02-14
Abstract
Abstract Copolymers and terpolymers consisting essentially of (a) a basic substituted acrylate or methacrylate;and (b) at least one ethylenically unsaturated compound selected from vinyl aromatic hydrocarbons, vinyl esters, normal and branched chain alkyl esters of acrylic and methacrylic acids, and acrylonitrile. The polymers which are substantially insoluble in aqueous media at pH6 or more but soluble at pH3 or less are used as coatings for nutrient or therapeutic substances for administration to ruminants. The substances thus are rendered resistant to attack and breakdown in the rumen.
Inventors
- 👤 L Merry
- 👤 D Solomon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:20
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/28; A61K9/2806; A61K9/2833; A61K9/284; A61K9/2846; A23; A23K; A23K40/00; A23K40/30; A23K40/35; A61K9/48; A61K9/50; A61K9/5005; A61K9/5021; A61K9/5026
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
33 words
A composition as claimed 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 the copolymer or terpolymer.
Claim 2
Dependent Claim
25 words
A composition as claimed in claim 1, wherein particles of the nutrient or therapeutic material are dispersed throughout a matrix of the copolymer or terpolymer.
Claim 3
Dependent Claim
22 words
A composition as claimed in claim 1, in the form of particles having an average diameter of about 0.1 to 1 mm.
Claim 4
Independent Claim
65 words
A method for rendering an orally administered nutrient or therapeutic material resistant to microbial attack within the rumen of ruminant animals comprising providing on said material a coating of one of the copolymers or terpolymers consisting essentially of: a. not more than 50 percent by weight of a basic monomer selected from the group consisting of amino substituted acrylates and methacrylates of the general formula:
Claim 5
Dependent Claim
25 words
A method as claimed in claim 5, wherein discrete bodies or particles of the nutrient or therapeutic material are coated with the copolymer or terpolymer.
Claim 6
Dependent Claim
28 words
A method as claimed in claim 5, wherein discrete bodies or particles of the nutrient or therapeutic material are incorporated into a matrix of the copolymer or terpolymer.
Claim 7
Independent Claim
66 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 a copolymer or terpolymer consisting essentially of; a. not more than 50 percent by weight of a basic monomer selected from the group consisting of amino substituted acrylates and methacrylates of the general formula:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |