US4588612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pretreatment in encapsulation process
Assignee: Durkee Industrial Foods Corp
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Filing: 1985-04-24
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Granted: 1986-05-13
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Expires: 2005-04-24
Abstract
Abstract A process for encapsulating materials which are difficult to fluidize in a fluidized bed reactor comprising the steps of (1) compacting said materials into a plurality of flat chips; (2) grinding said chips into particles having a small particle size; (3) forming a fluid bed of the particles of step (2) in a fluid bed spray reactor; (4) applying a spray of a melted or molten hydrogenated liquid or wax to the surface of said particles in said reactor, encapsulating said particles; withdrawing said encapsulating material from said reactor.
Inventors
- 👤 Douglas W. Perkins
- 👤 Anthony V. Petricca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:33
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/02; B01J13/04; B01J13/043; A; A23; A23G; A23G3/00; A23G3/34; A23G3/346; A23L; A23L27/00; A23L27/30; A23L27/31; A23L27/32; A23L27/70; A23L27/72; A23P; A23P10/00; A23P10/30; A23P10/35; A61; A61K; A61K9/00; A61K9/48; A61K9/50; B01J8/00; B01J8/18; B01J8/1872; A23G2220/00; A23G2220/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
98 words
A process for encapsulating materials which are difficult to fluidize in a fluidized bed reactor comprising the steps of (1) compacting said materials into a plurality of flat chips; (2) grinding said chips into particles having an average particle size in the range of about 20 to about 400 mesh size, U.S. Standard Sieve; (3) forming a fluid bed of the particles of step (2) in a fluid bed spray reactor; (4) applying a spray of encapsulating coating to the surface of said particles in said reactor, encapsulating said particles; (5) withdrawing said encapsulated particles from said reactor.
Claim 2
Dependent Claim
98 words
A process for encapsulating materials which are difficult to fluidize in a fluidized bed reactor comprising the steps of (1) compacting said materials into a plurality of flat chips; (2) grinding said chips into particles having an average particle size in the range of about 20 to about 400 mesh size, U.S. Standard Sieve; (3) forming a fluid bed of the particles of step (2) in a fluid bed spray reactor; (4) applying a spray of encapsulating coating to the surface of said particles in said reactor, encapsulating said particles; (5) withdrawing said encapsulated particles from said reactor.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein said encapsulating coating is a melted or molten hydrogenated lipid or wax.
Claim 4
Dependent Claim
11 words
The process of claim 2 wherein said hydrogenated lipid is stearine.
Claim 5
Dependent Claim
14 words
The process of claim 1 wherein said difficult to fluidize material is aspartame particles.
Claim 6
Dependent Claim
89 words
In an encapsulation process, for the encapsulation of long, needle-like crystalline particles, wherein the encapsulation is carried out in a fluid bed reactor by spray application of an encapsulate onto a fluid bed of such particles, the improvement comprising the steps of, prior to encapsulation, compacting said particles into flat sheets; breaking said sheets into a plurality of flat chips; and granulating said chips into a plurality of small particles having an average particle size within the range of about 20 to about 400 mesh size, U.S. Standard Sieve.
Claim 7
Dependent Claim
89 words
In an encapsulation process, for the encapsulation of long, needle-like crystalline particles, wherein the encapsulation is carried out in a fluid bed reactor by spray application of an encapsulate onto a fluid bed of such particles, the improvement comprising the steps of, prior to encapsulation, compacting said particles into flat sheets; breaking said sheets into a plurality of flat chips; and granulating said chips into a plurality of small particles having an average particle size within the range of about 20 to about 400 mesh size, U.S. Standard Sieve.
Claim 8
Dependent Claim
11 words
Encapsulated particles prepared by the processes of claims 1 or 5.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-12 | 1989-11-11 | 1990-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-12 | 1993-11-11 | 1994-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-12 | 1997-11-11 | 1998-05-13 | $7700.00 | Window Closed / Lapsed |