Patent US4802924A successfully refreshed from Google Patents.
US4802924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coatings based on polydextrose for aqueous film coating of pharmaceutical food and confectionary products
Assignee: Colorcon Inc
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Filing: 1986-06-19
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Granted: 1989-02-07
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Expires: 2006-06-19
Abstract
Abstract Providing a film coating on pharmaceutical tablets, foods, confectionery forms and the like by coating them with polydextrose, or a combination of polydextrose and cellulosic polymer, or a layer of polydextrose overcoated by a layer of cellulosic polymer.
Inventors
- 👤 Edward J. Woznicki
- 👤 Susan M. Grillo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:22
CPC Classifications
C; C08; C08L; C08L1/00; A; A61; A61K; A61K9/00; A61K9/20; A61K9/28; A61K9/2806; A61K9/2833; A61K9/286; A61K9/2866; A23; A23G; A23G3/00; A23G3/02; A23G3/20; A23G3/2092; A23G3/34; A23G3/343; A23P; A23P20/00; A23P20/10; A23P20/105; A23G2200/00; A23G2200/06
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
85 words
A method of film coating pharmaceutical tablets, food, confectionery forms and the like with a protective film coating comprising the steps of mixing polydextrose, plasticizer, detackifier, and secondary film former into water to form an aqueous coating suspension, spraying an effective amount of said coating suspension onto said tablets to form a film coating on said tablets, and drying the film coating on said tablets, wherein the amount of polydextrose used is sufficient to yield improved results as compared to a similar coating absent polydextrose.
Claim 2
Independent Claim
85 words
A method of film coating pharmaceutical tablets, food, confectionery forms and the like with a protective film coating comprising the steps of mixing polydextrose, plasticizer, detackifier, and secondary film former into water to form an aqueous coating suspension, spraying an effective amount of said coating suspension onto said tablets to form a film coating on said tablets, and drying the film coating on said tablets, wherein the amount of polydextrose used is sufficient to yield improved results as compared to a similar coating absent polydextrose.
Claim 3
Dependent Claim
21 words
The method of claim 1, including dispersing a colorant in the coating suspension before applying the coating suspension to the tablets.
Claim 4
Dependent Claim
17 words
The method of claim 1, wherein the plasticizer is polyethylene glycol, triacetin, propylene glycol, or acetyltriethyl citrate.
Claim 5
Dependent Claim
27 words
The method of claim 1, wherein the plasticizer is in a range of 2.5% to 10% by weight of the non-water ingredients of the aqueous coating suspension.
Claim 6
Dependent Claim
13 words
The method of claim 1, wherein the detackifier is lecithin or mineral oil.
Claim 7
Dependent Claim
27 words
The method of claim 1, wherein the detackifier is in the range of 1% to 3% by weight of the non-water ingredients of the aqueous coating suspension.
Claim 8
Dependent Claim
17 words
The method of claim 1, wherein the secondary film former is sodium alginate or propylene glycol alginate.
Claim 9
Dependent Claim
29 words
The method of claim 1, wherein the secondary film former is in the range of 2% to 10% by weight of the non-water ingredients of the aqueous coating suspension.
Claim 10
Dependent Claim
20 words
The method of claim 2, wherein said colorants are FD&C lakes, D&C lakes, titanium dioxide, or FD&C or D&C dyes.
Claim 11
Dependent Claim
27 words
The method of claim 2, wherein said colorants are in the range of 0% to 25% by weight of the non-water ingredients of the aqueous coating suspension.
Claim 12
Dependent Claim
49 words
The method of claim 1 the plasticizer being polyethylene glycol, triacetin, propylene glycol, or acetyltriethyl citrate, the detackifier is lecithin or mineral oil, the secondary film former is sodium alginate or propylene glycol alginate, and the colorants are FD&C lakes, D&C lakes, titanium dioxide, or FD&C or D&C dyes.
Claim 13
Dependent Claim
167 words
The method of claim 1, the polydextrose being 30 to 90% by weight of the non-water ingredients of the aqueous coating suspension, dispersing a colorant in the coating suspension before applying the coating suspension to the tablets, the colorants being FD&C lakes, D&C lakes, titanium dioxide, or FD&C or D&C dyes, and are 0 to 25% by weight of the non-water ingredients of the suspension, the plasticizer being polyethylene glycol, triacetin, propylene glycol, or acetyltriethyl citrate in a range of 2.5% to 10% by weight of the non-water ingredients of the suspension, the detackifier being lecithin or mineral oil in a range of 1 to 3% by weight of the non-water ingredients of the aqueous coating suspension, the secondary film former being sodium alginate or propylene glycol alginate in a range of 2% to 10% by weight of the non-water ingredients of the aqueous coating suspension, and wherein the amount of polydextrose used is sufficient to yield improved results as compared to a similar coating absent polydextrose.
Claim 14
Independent Claim
102 words
A method of film coating pharmaceutical tablets, food, confectionery forms and the like with a protective film comprising the steps of mixing polydextrose, plasticizer, detackifier, and secondary film former into water to form an aqueous coating suspension, said tablets having debossed words or designs on their outer surface, spraying an effective amount of said coating suspension onto said tablets to form a film coating thereon without obscuring the debossed words or designs by bridging, and drying the film coating on said tablets, wherein the amount of polydextrose used is sufficient to yield improved results as compared to a similar coating absent polydextrose.
Claim 15
Independent Claim
102 words
A method of film coating pharmaceutical tablets, food, confectionery forms and the like with a protective film comprising the steps of mixing polydextrose, plasticizer, detackifier, and secondary film former into water to form an aqueous coating suspension, said tablets having debossed words or designs on their outer surface, spraying an effective amount of said coating suspension onto said tablets to form a film coating thereon without obscuring the debossed words or designs by bridging, and drying the film coating on said tablets, wherein the amount of polydextrose used is sufficient to yield improved results as compared to a similar coating absent polydextrose.
Claim 16
Independent Claim
83 words
A method of film coating pharmaceutical tablets, food, confectionery forms and the like with a protective film comprising the steps of mixing polydextrose, plasticizer, and a cellulosic polymer into water to make an aqueous coating suspension, spraying an effective amount of said coating suspension onto said tablets to form a film coating on said tablets, and drying the film coating on said tablets, wherein the amount of polydextrose used is sufficient to yield improved results as compared to a similar coating absent polydextrose.
Claim 17
Independent Claim
83 words
A method of film coating pharmaceutical tablets, food, confectionery forms and the like with a protective film comprising the steps of mixing polydextrose, plasticizer, and a cellulosic polymer into water to make an aqueous coating suspension, spraying an effective amount of said coating suspension onto said tablets to form a film coating on said tablets, and drying the film coating on said tablets, wherein the amount of polydextrose used is sufficient to yield improved results as compared to a similar coating absent polydextrose.
Claim 18
Dependent Claim
15 words
The method of claim 14, the cellulosic polymer being hydroxypropyl methyl cellulose or hydroxypropyl cellulose.
Claim 19
Dependent Claim
14 words
The method of claim 14, including mixing a detackifier into said aqueous coating suspension.
Claim 20
Dependent Claim
21 words
The method of claim 14, including dispersing a colorant in the coating suspension before applying the coating suspension onto the tablets.
Claim 21
Dependent Claim
21 words
The method of claim 14, wherein the plasticizer is polyethylene glycol, triacetin, propylene glycol, or acetyltriethyl citrate, or a mixture thereof.
Claim 22
Dependent Claim
26 words
The method of claim 15, wherein the plasticizer is in a range of 2.5% to 10% by weight of the aqueous coating suspension without the water.
Claim 23
Dependent Claim
13 words
The method of claim 16, including the detackifier being lecithin or mineral oil.
Claim 24
Dependent Claim
27 words
The method of claim 16, wherein the detackifier is in the range of 1% to 3% by weight of the non-water ingredients of the aqueous coating suspension.
Claim 25
Dependent Claim
20 words
The method of claim 17, wherein said colorants are FD&C lakes, D&C lakes, titanium dioxide, or FD&C or D&C dyes.
Claim 26
Dependent Claim
27 words
The method of claim 17, wherein said colorants are in the range of 0% to 26% by weight of the non-water ingredients of the aqueous coating suspension.
Claim 27
Independent Claim
119 words
A method of film coating pharmaceutical tablets, food, confectionery forms and the like with a protective film comprising the steps of mixing together polydextrose, plasticizer, detackifier, secondary film former, and water to form an aqueous coating suspension, spraying an effective amount of said coating suspension onto said tablets to form a film coating on said tablets, and drying the film coating on said tablets, spraying an effective amount of a cellulosic coating solution onto the tablets to form a cellulosic film coating on the tablets which overcoats said film coating, and drying the cellulosic film coating on said tablets, wherein the amount of polydextrose used is sufficient to yield improved results as compared to a similar coating absent polydextrose.
Claim 28
Independent Claim
119 words
A method of film coating pharmaceutical tablets, food, confectionery forms and the like with a protective film comprising the steps of mixing together polydextrose, plasticizer, detackifier, secondary film former, and water to form an aqueous coating suspension, spraying an effective amount of said coating suspension onto said tablets to form a film coating on said tablets, and drying the film coating on said tablets, spraying an effective amount of a cellulosic coating solution onto the tablets to form a cellulosic film coating on the tablets which overcoats said film coating, and drying the cellulosic film coating on said tablets, wherein the amount of polydextrose used is sufficient to yield improved results as compared to a similar coating absent polydextrose.
Claim 29
Dependent Claim
19 words
The method of claim 24, including dispersing colorant in the cellulosic coating solution before spraying it onto said tablets.
Claim 30
Dependent Claim
11 words
The product made in accordance with the method of claim 1.
Claim 31
Dependent Claim
11 words
The product made in accordance with the method of claim 11.
Claim 32
Dependent Claim
11 words
The product made in accordance with the method of claim 12.
Claim 33
Dependent Claim
11 words
The product made in accordance with the method of claim 13.
Claim 34
Dependent Claim
11 words
The product made in accordance with the method of claim 14.
Claim 35
Dependent Claim
11 words
The product made in accordance with the method of claim 24.
Claim 36
Independent Claim
120 words
A method of coating pharmaceutical tablets, food, confectionery forms and the like with a protective film comprising the steps of mixing a primary film-former comprising polydextrose and a cellulosic film former, with the polydextrose being in the range of 10 to 100% by weight of the primary film-former being in the range of 0 to 90% of, a plasticizer, a detackifier, and a secondary film-former into water to form an aqueous coating suspension, spraying an effective amount of said coating suspension onto said tablets to form a film coating on said tablets, and drying the film coating on said tablets wherein the amount of polydextrose used is sufficient to yield improved results as compared to a similar coating absent polydextrose.
Claim 37
Independent Claim
120 words
A method of coating pharmaceutical tablets, food, confectionery forms and the like with a protective film comprising the steps of mixing a primary film-former comprising polydextrose and a cellulosic film former, with the polydextrose being in the range of 10 to 100% by weight of the primary film-former being in the range of 0 to 90% of, a plasticizer, a detackifier, and a secondary film-former into water to form an aqueous coating suspension, spraying an effective amount of said coating suspension onto said tablets to form a film coating on said tablets, and drying the film coating on said tablets wherein the amount of polydextrose used is sufficient to yield improved results as compared to a similar coating absent polydextrose.
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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) | 1992-02-07 | 1992-08-08 | 1993-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-07 | 1996-08-08 | 1997-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-07 | 2000-08-08 | 2001-02-07 | $7700.00 | Window Closed / Lapsed |