US4997856A
Expired / Lapsed
US
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Method of producing compacted dispersable systems
Assignee: Biovail Technologies Ltd
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Filing: 1989-11-30
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Granted: 1991-03-05
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Expires: 2009-11-30
Abstract
Abstract Floss spun from a mixture of a saccharide and an oleaginous substance which includes a medicament distributed on or through the fibers is compacted and chopped by passing through a conventional "food grinder" or equivalent having an auger feed to a cutter and orifice plate outlet. The enclosed volume of the end product is less than 30% and preferably less than 15% of the as-spun volume of the floss. This volume reduction is accomplished without distroying the colloidal-like behavior of the product. The compressed particles are readily metered for producing dosage units within required tolerances.
Inventors
- 👤 Richard C. Fuisz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:07
CPC Classifications
A; A23; A23G; A23G3/00; A23G3/02; A23G3/10; A23G3/34; A23G3/36; A23G3/364; A23G3/368; A23L; A23L13/00; A23L13/40; A23L13/42; A23L13/43; A23L33/00; A23L33/20; A23P; A23P10/00; A23P10/20; A23P10/25; A23P10/28; A61; A61K; A61K8/00; A61K8/02; A61K8/0241; A61K8/027; A61K8/18; A61K8/30; A61K8/40; A61K8/44; A61K8/445; A61K8/60; A61K8/72; A61K8/73; A61K8/735; A61K9/00; A61K9/70; A61L; A61L26/00; A61L26/0061; A61L26/0066; A61M; A61M37/00; A61Q; A61Q17/00; A61Q17/04; A61Q5/00; A61Q5/12; A61L2300/00; A61L2300/80; A61L2300/802
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
79 words
A method for preparing a stable pharmaceutical product for delivering a medicament comprising in combination the steps of producing a mixture containing a medicament by at least combining an oleaginous substance with a saccharide capable of being spun into fibers that are readily watersoluble, processing said mixture to yield a fluffy mass of spun fibers, thereafter compacting said fluffy mass of fibers to produce a compacted product having an enclosed volume less than 30% of said as-spun enclosed volume.
Claim 2
Independent Claim
79 words
A method for preparing a stable pharmaceutical product for delivering a medicament comprising in combination the steps of producing a mixture containing a medicament by at least combining an oleaginous substance with a saccharide capable of being spun into fibers that are readily watersoluble, processing said mixture to yield a fluffy mass of spun fibers, thereafter compacting said fluffy mass of fibers to produce a compacted product having an enclosed volume less than 30% of said as-spun enclosed volume.
Claim 3
Dependent Claim
22 words
A method according to claim 1, comprising the further step of breaking up said compacted product into a quantity of discrete particles.
Claim 4
Dependent Claim
22 words
A method according to claim 2, comprising the further step of subdividing said quantity of discrete particles into discrete predetermined dosage units.
Claim 5
Dependent Claim
20 words
A method according to claim 1, comprising the further step of subdividing said compacted product into discrete predetermined dosage units.
Claim 6
Dependent Claim
50 words
A method according to claim 1, wherein said compacting step is performed by feeding said fluffy mass of fibers into a cylinder containing a rotatable auger and an outlet provided with orifice means, and rotating said auger to compact the fibers and express the compacted fibers through said orifice means.
Claim 7
Dependent Claim
58 words
A method according to claim 5, wherein the speed of rotation of said auger and the size of the openings in said orifice means are maintained and related to compress and express the fluffy mass without raising the temperature of the fibers above a critical temperature at which the material of said fluffy mass would commence to coalesce.
Claim 8
Dependent Claim
22 words
A method according to claim 6, comprising the further step of breaking up said compacted product into a quantity of discrete particles.
Claim 9
Dependent Claim
22 words
A method according to claim 7, comprising the further step of subdividing said quantity of discrete particles into discrete predetermined dosage units.
Claim 10
Dependent Claim
20 words
A method according to claim 6, comprising the further step of subdividing said compacted product into discrete predetermined dosage units.
Claim 11
Dependent Claim
26 words
A method according to claim 1, wherein said compacted product is produced with an enclosed volume that is less than 15% of said as-spun enclosed volume.
Claim 12
Dependent Claim
22 words
A method according to claim 10, comprising the further step of breaking up said compacted product into a quantity of discrete particles.
Claim 13
Dependent Claim
22 words
A method according to claim 11, comprising the further step of subdividing said quantity of discrete particles into discrete predetermined dosage units.
Claim 14
Dependent Claim
20 words
A method according to claim 10, comprising the further step of subdividing said compacted product into discrete predetermined dosage units.
Claim 15
Dependent Claim
50 words
A method according to claim 10, wherein said compacting step is performed by feeding said fluffy mass of fibers into a cylinder containing a rotatable auger and an outlet provided with orifice means, and rotating said auger to compact the fibers and express the compacted fibers through said orifice means.
Claim 16
Dependent Claim
58 words
A method according to claim 14, wherein the speed of rotation of said auger and the size of the openings in said orifice means are maintained and related to compress and express the fluffy mass without raising the temperature of the fibers above a critical temperature at which the material of said fluffy mass would commence to coalesce.
Claim 17
Dependent Claim
22 words
A method according to claim 15, comprising the further step of breaking up said compacted product into a quantity of discrete particles.
Claim 18
Dependent Claim
22 words
A method according to claim 16, comprising the further step of subdividing said quantity of discrete particles into discrete predetermined dosage units.
Claim 19
Dependent Claim
20 words
A method according to claim 15, comprising the further step of subdividing said compacted product into discrete predetermined dosage units.
Claim 20
Independent Claim
77 words
A method for converting a fluffy mass of spun fibers into a product capable of being readily subdivided into any desired predetermined quantity where said fibers include at least one saccharide, and at least one oleaginous substance is distributed on or incorporated in said fibrous mass, said method comprising compacting said fluffy mass of fibers to produce a compacted product having an enclosed volume less than 30% of the as-spun enclosed volume of the original fluffy mass.
Claim 21
Independent Claim
77 words
A method for converting a fluffy mass of spun fibers into a product capable of being readily subdivided into any desired predetermined quantity where said fibers include at least one saccharide, and at least one oleaginous substance is distributed on or incorporated in said fibrous mass, said method comprising compacting said fluffy mass of fibers to produce a compacted product having an enclosed volume less than 30% of the as-spun enclosed volume of the original fluffy mass.
Claim 22
Dependent Claim
22 words
A method according to claim 19, comprising the further step of breaking up said compacted product into a quantity of discrete particles.
Claim 23
Dependent Claim
50 words
A method according to claim 19, wherein said compacting step is performed by feeding said fluffy mass of fibers into a cylinder containing a rotatable auger and an outlet provided with orifice means, and rotating said auger to compact the fibers and express the compacted fibers through said orifice means.
Claim 24
Dependent Claim
58 words
A method according to claim 21, wherein the speed of rotation of said auger and the size of the openings in said orifice means are maintained and related to compress and express the fluffy mass without raising the temperature of the fibers above a critical temperature at which the material of said fluffy mass would commence to coalesce.
Claim 25
Dependent Claim
26 words
A method according to claim 19, wherein said compacted product is produced with an enclosed volume that is less than 15% of said as-spun enclosed volume.
Claim 26
Dependent Claim
32 words
A method according to claim 19, wherein said mass of spun fibers is produced by melt spinning a mixture of said saccharide and said oleaginous substance where said mixture includes a medicament.
Claim 27
Dependent Claim
22 words
A method according to claim 24, wherein said saccharide is selected from the group consisting of sucrose, lactose, dextrose and combinations thereof.
Claim 28
Dependent Claim
14 words
A method according to claim 25, wherein said oleaginous substance is a vegetable oil.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-03-04 | 1994-09-03 | 1995-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-04 | 1998-09-03 | 1999-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-04 | 2002-09-03 | 2003-03-05 | $7700.00 | Window Closed / Lapsed |