Patent US4925670A successfully refreshed from Google Patents.
US4925670A
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US
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Administration and dosage form for drug active agents, reagents or the like and process for the preparation thereof
Assignee: LTS Lohmann Therapie Systeme AG
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Filing: 1989-04-24
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Granted: 1990-05-15
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Expires: 2009-04-24
Abstract
Abstract A novel dosage form for drug active agents, reagents or other active agents comprising a film-like carrier material having an active agent-containing coating one side thereof and wherein the carrier material is in the form of a release paper, film or foil, and the active agent-containing coating is removed in a dosewise manner from the carrier material after subdivision into dosage units. The removed active agent-containing portions are suitable as oral drugs, pharmaceuticals, reagents or foodstuff.
Inventors
- 👤 Wolfgang Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:35
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/70; A61K9/20; A61K9/2072; A61K9/2086
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
42 words
A drug dosage form having homogeneity and galenic stability comprising: (i) a non-ingestible surface carrier material, and (ii) an active agent-containing coating disposed on a first surface of said carrier material, and wherein said coating is subdivided into removable oral dosage units.
Claim 2
Dependent Claim
42 words
A drug dosage form having homogeneity and galenic stability comprising: (i) a non-ingestible surface carrier material, and (ii) an active agent-containing coating disposed on a first surface of said carrier material, and wherein said coating is subdivided into removable oral dosage units.
Claim 3
Dependent Claim
27 words
A dosage form according to claim 1, wherein said carrier material is a plastic film or sheet, a thin metal foil, or a silicone- or wax-coated paper.
Claim 4
Dependent Claim
17 words
A dosage form according to claim 1, wherein said coating is cut or perforated into dosage units.
Claim 5
Dependent Claim
16 words
A dosage form according to claim 1, wherein said coating comprises more than one active agent.
Claim 6
Dependent Claim
15 words
A dosage form according to claim 1, wherein said coating further comprises water-soluble swelling substances.
Claim 7
Dependent Claim
53 words
A dosage form according to claim 1, wherein said coating comprises a plurality of layers comprising a first layer containing an active agent in contact with the carrier and at least one additional coating layer and optionally an intermediate layer free of an active agent interposed between said first and additional coating layer.
Claim 8
Dependent Claim
18 words
A dosage form according to claim 6, wherein incompatible active agents are present in said additional coating layer.
Claim 9
Dependent Claim
32 words
A dosage form according to claim 6, wherein an active agent-containing layer is arranged between at least two additional layers, whereby resorption of the active agents in the gastrointestinal tract is controlled.
Claim 10
Dependent Claim
36 words
A dosage form according to claim 6, wherein a layer is disposed over the active agent layer which layer is capable of protecting the active agent from contact with the environment of from exposure to light.
References Cited (Backward Citations)
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Cited
GB1434042A
Cited
US4008351A
Cited
US4136162A
Cited
US4197289A
Cited
US4483846A
Cited
US4451260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-14 | 1993-11-13 | 1994-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-14 | 1997-11-13 | 1998-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-14 | 2001-11-13 | 2002-05-15 | $7700.00 | Window Closed / Lapsed |