Patent US4318414A successfully refreshed from Google Patents.
EP0126453A2
Expired / Lapsed
EP
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Controlled release tablet
Assignee: Aventis Pharmaceuticals Inc
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Filing: 1984-05-18
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Granted: —
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Expires: 2004-05-18
Abstract
Abstract Compression gradient tablets are described which provide for controlled release of active ingredient.
Inventors
- 👤 Dhiren Shah
- 👤 Deborah A. Gilbert
- 👤 Robert D. Copeland
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 14:25
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; B; B30; B30B; B30B15/00; B30B15/06; B30B15/065; A61K9/2072
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
23 words
A controlled release pharmaceutical tablet having compressed faces wherein at least one of the compressed faces is sloped to effect a compression gradient.
Claim 2
Dependent Claim
23 words
A controlled release pharmaceutical tablet having compressed faces wherein at least one of the compressed faces is sloped to effect a compression gradient.
Claim 3
Dependent Claim
18 words
A tablet of claim 1 wherein the angle of inclination is from 5 to 25 degrees of arc.
Claim 4
Dependent Claim
15 words
A tablet of claim 1 wherein the angle of inclination is 25 degrees of arc.
Claim 5
Dependent Claim
15 words
A tablet of claim 1 wherein the angle of inclination is 10 degrees of arc.
Claim 6
Dependent Claim
13 words
A tablet of claim 1 wherein the peripheral side is capsule- or rod-shaped.
Claim 7
Dependent Claim
26 words
' A process for preparing a compression gradient pharmaceutical tablet providing controlled release of the active ingredient by employing a tableting punch with a sloped face.
Claim 8
Dependent Claim
26 words
' A process for preparing a compression gradient pharmaceutical tablet providing controlled release of the active ingredient by employing a tableting punch with a sloped face.
Claim 9
Dependent Claim
23 words
A process of claim 6 wherein the angle of inclination of the sloped tableting punch is from 5 to 25 degrees of arc.
Claim 10
Dependent Claim
20 words
A process of claim 6 wherein the angle of inclination of the sloped tableting punch is 10 degrees of arc.
Claim 11
Dependent Claim
20 words
A process of claim 6 wherein the angle of inclination of the sloped tableting punch is 25 degrees of arc.
Claim 12
Dependent Claim
16 words
A process of claim 6 wherein the resulting tablet has a capsule- or rod-shaped peripheral side.
Claim 13
Dependent Claim
23 words
A tableting punch as used in any of claims 6 to 10, characterized in that the tablet punch has a sloped tableting face.
Claim 14
Dependent Claim
24 words
A tableting punch of claim 11, wherein the angle of inclination of the sloped tableting face is from 5 to 25 degrees of arc.
References Cited (Backward Citations)
No citation records indexed.
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