Patent EP0357327A2 successfully refreshed from Google Patents.
EP0357327A2
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EP
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Sustained release device
Assignee: National Research Development Corp UK
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Filing: 1989-08-23
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Granted: —
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Expires: 2009-08-23
Abstract
Abstract An acid-base reaction cement of magnesium oxide base plus magnesium sulphate as acid includes amprolium and optionally a weighting agent, and is formed into a bolus or other sustained-release device for oral administration to cows. The rate of release of amprolium is convenient for husbandry.
Inventors
- 👤 Brian Ernest Kent
- 👤 Havard John Prosser
- 👤 Alan Donald Wilson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 10:50
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2022; A61K9/2027; A61K9/2009; A61L; A61L24/00; A61L24/001; A61L24/0015; A61L2300/00; A61L2300/20; A61L2300/204; A61L2300/208; A61L2300/40; A61L2300/404; A61L2300/60; A61L2300/602
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
31 words
A sustained release device, comprising a shaped cementitious mass or a tablet formed of crushed cementitious material, the cement being an acid-base reaction cement and comprising a pharmaceutically active organic substance.
Claim 2
Dependent Claim
31 words
A sustained release device, comprising a shaped cementitious mass or a tablet formed of crushed cementitious material, the cement being an acid-base reaction cement and comprising a pharmaceutically active organic substance.
Claim 3
Dependent Claim
50 words
A sustained release device according to Claim 1, wherein the cement is formed from an acid cement-forming component which comprises a mineral acid, an acid salt, a polyfunctional organic phosphoric acid, a polyfunctional phenol, a homo- or co-polymer of an unsaturated carboxylic or sulphonic acid, or a hydrolysable precursor thereof.
Claim 4
Dependent Claim
32 words
A sustained release device according to Claim 1 or Claim 2, wherein the base cement-forming component comprises a basic or amphoteric oxide or hydroxide or salt of a weak or volatile acid.
Claim 5
Dependent Claim
15 words
A sustained release device according to Claim 3, wherein the oxide is an ion-leachable glass.
Claim 6
Dependent Claim
16 words
A sustained release device according to Claim 3, wherein the cement is a magnesium oxysulphate cement.
Claim 7
Dependent Claim
15 words
A sustained release device according to any preceding claim, wherein the organic substance is amprolium.
Claim 8
Dependent Claim
22 words
A sustained release device according to any preceding claim, having incorporated therein a weighting agent to increase the density of the device.
Claim 9
Dependent Claim
22 words
A sustained release device according to Claim 1 substantially as hereinbefore described with reference to any one of Examples 1 to 45.
References Cited (Backward Citations)
No citation records indexed.
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