Patent US5624612A successfully refreshed from Google Patents.
US5624612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonaggregating hydrocolloid microparticulates, intermediates therefor, and processes for their preparation
Assignee: FMC Corp
•
Filing: 1995-06-07
•
Granted: 1997-04-29
•
Expires: 2015-06-07
Abstract
Abstract Substantially dry, rehydratable, water-dispersible, gel-forming, porous hydrocolloid microparticulates containing internally or internally and externally at least one water-soluble, non-gelling, hydration enhancing hydrocolloid, processes and intermediates for their preparation, and their uses.
Inventors
- 👤 Christopher J. Sewall
- 👤 Donald W. Renn
- 👤 Peter J. Riley
- 👤 William R. Thomas
- 👤 Lisa E. Dumont
- 👤 Guy A. Crosby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:29
CPC Classifications
A; A23; A23D; A23D9/00; A23D9/007; A23D7/00; A23D7/005; A23D7/0056; A23D7/015; A23D7/02; A23D7/04; A23D7/05; A23L; A23L19/00; A23L19/10; A23L19/115; A23L27/00; A23L27/70; A23L27/72; A23L29/00; A23L29/20; A23L29/206; A23L29/212; A23L29/256; A23L29/262; A23P; A23P10/00; A23P10/30; A23P10/35; A23P10/40; Y; Y10; Y10S; Y10S426/00; Y10S426/804; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249955; Y10T428/249958; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
106 words
A process for the preparation of substantially dry, rehydratable, water-dispersible, gel-forming, porous hydrocolloid microparticulates which comprise: (a) a gel-forming hydrocolloid which comprises a matrix of the porous microparticulates; and (b) at least one water-soluble, non-gelling, hydration-enhancing hydrocolloid; wherein the component (a) matrix contains component (b) internally within its porous structure, and wherein component (b) may be on at least a portion of the outer surfaces of the microparticulates comprising the steps of (a) forming hydrocolloid gel microparticulates from the gel-forming hydrocolloid, (b) contacting the hydrocolloid microparticulates with at least one water-soluble, non-gelling, hydration enhancing hydrocolloid in an aqueous medium, and (c) drying the resulting hydrocolloid microparticulates.
Claim 2
Dependent Claim
106 words
A process for the preparation of substantially dry, rehydratable, water-dispersible, gel-forming, porous hydrocolloid microparticulates which comprise: (a) a gel-forming hydrocolloid which comprises a matrix of the porous microparticulates; and (b) at least one water-soluble, non-gelling, hydration-enhancing hydrocolloid; wherein the component (a) matrix contains component (b) internally within its porous structure, and wherein component (b) may be on at least a portion of the outer surfaces of the microparticulates comprising the steps of (a) forming hydrocolloid gel microparticulates from the gel-forming hydrocolloid, (b) contacting the hydrocolloid microparticulates with at least one water-soluble, non-gelling, hydration enhancing hydrocolloid in an aqueous medium, and (c) drying the resulting hydrocolloid microparticulates.
Claim 3
Dependent Claim
25 words
The process of claim 1 wherein the microparticulates in step A) have an average particle size diameter of from about 0.1 to about 150 microns.
Claim 4
Dependent Claim
13 words
The process of claim 2 wherein the microparticulates are substantially spheroidal in shape.
Claim 5
Dependent Claim
17 words
The process of claim 1 wherein in step A) the gel-forming hydrocolloid is heat stable cold-melt konjac.
Claim 6
Dependent Claim
37 words
The process of claim 1 wherein step C) is carried out by either air drying, spray drying, oven drying, fluidized bed drying, freeze drying, vacuum drying, or coagulating with a water-miscible organic solvent followed by oven drying.
Claim 7
Dependent Claim
27 words
The process of claim 5 wherein drying is carried out using isopropyl alcohol containing from 0 to about 20% by volume of water, followed by oven drying.
Claim 8
Dependent Claim
111 words
A process for the preparation of substantially dry, rehydratable, water-dispersible, gel-forming, porous hydrocolloid microparticulates which comprise: (a) a gel-forming hydrocolloid which comprises a matrix of the porous microparticulates; and (b) at least one water-soluble, non-gelling, hydration-enhancing hydrocolloid; wherein the component (a) matrix contains component (b) internally within its porous structure, and wherein component (b) may be present on at least a portion of the outer surfaces of the microparticulates comprising the steps of A) forming an aqueous composition comprising at least one gellable hydrocolloid and at least one water-soluble, non-gelling, hydration enhancing hydrocolloid, B) forming hydrocolloid gel microparticulates from the composition of step A), and C) drying the resulting hydrocolloid microparticulates.
Claim 9
Dependent Claim
111 words
A process for the preparation of substantially dry, rehydratable, water-dispersible, gel-forming, porous hydrocolloid microparticulates which comprise: (a) a gel-forming hydrocolloid which comprises a matrix of the porous microparticulates; and (b) at least one water-soluble, non-gelling, hydration-enhancing hydrocolloid; wherein the component (a) matrix contains component (b) internally within its porous structure, and wherein component (b) may be present on at least a portion of the outer surfaces of the microparticulates comprising the steps of A) forming an aqueous composition comprising at least one gellable hydrocolloid and at least one water-soluble, non-gelling, hydration enhancing hydrocolloid, B) forming hydrocolloid gel microparticulates from the composition of step A), and C) drying the resulting hydrocolloid microparticulates.
Claim 10
Dependent Claim
25 words
The process of claim 7 wherein the microparticulates in step B) have an average particle size diameter of from about 0.1 to about 150 microns.
Claim 11
Dependent Claim
13 words
The process of claim 8 wherein the microparticulates are substantially spheroidal in shape.
Claim 12
Dependent Claim
17 words
The process of claim 7 wherein in step A) the gellable hydrocolloid is heat stable cold-melt konjac.
Claim 13
Dependent Claim
37 words
The process of claim 7 wherein step C) is carried out by either air drying, spray drying, oven drying, fluidized bed drying, freeze drying, vacuum drying, or coagulating with a water-miscible organic solvent followed by oven drying.
Claim 14
Dependent Claim
27 words
The process of claim 11 wherein drying is carried out using isopropyl alcohol containing from 0 to about 20% by volume of water followed by oven drying.
References Cited (Backward Citations)
US2438450A
Cited
US3573058A
Cited
US3527712A
Cited
US3936573A
Cited
US4143201A
Cited
GB1577955A
Cited
US4192900A
Cited
EP0011345A2
Cited
US4305964A
Cited
US4350765A
Cited
WO1983003102A1
Cited
US4956128A
Cited
US4882426A
Cited
US4952686A
Cited
US4911946A
Cited
US5153020A
Cited
EP0380225A2
Cited
EP0437360A1
Cited
US5082684A
Cited
JPH048257A
Cited
WO1991019424A1
Cited
WO1993002571A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-04-28 | 2000-10-28 | 2001-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-28 | 2004-10-28 | 2005-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-28 | 2008-10-28 | 2009-04-29 | $7700.00 | Window Closed / Lapsed |