US5059416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zinc compound delivery system with improved taste and texture
Assignee: Warner Lambert Co LLC
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Filing: 1989-06-26
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Granted: 1991-10-22
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Expires: 2009-06-26
Abstract
Abstract A new delivery system for zinc compounds and the process for its preparation is disclosed, which has use in a variety of products including comestibles such as chewing gum compositions, confections, pharmaceuticals, food products such as vitamin preparations, dentifrice compositions and throat lozenges. More particularly, this invention relates to a process for preparing a zinc compound delivery system comprised of a zinc core material coated with a first hydrophilic coating comprising a hydrocolloid material and a second hydrophobic coating selected from the group consisting of fats, waxes and mixtures thereof. The delivery system provides enhanced masking of the bitter flavor characteristic of zinc compounds, as well as reduced grittiness with retained stability at the elevated temperatures of product formulation.
Inventors
- 👤 Subraman R. Cherukuri
- 👤 Tommy L. Chau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:08
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K33/00; A61K33/24; A61K33/30; A61K8/00; A61K8/02; A61K8/11; A61K8/18; A61K8/19; A61K8/27; A61K9/00; A61K9/48; A61K9/50; A61K9/5073; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
112 words
A delivery system for a zinc salt providing reduced bitterness with improved mouthfeed and high temperature stability, comprising: (a) a core material comprising a zinc salt selected from the group consisting of inorganic salts of zinc, organic salts of zinc and mixtures thereof; (b) a first hydrophilic coating comprising a hydrocolloid material in an amount of from about 10% to about 50% by weight of said core material; and (c) a second hydrophobic coating selected from the group consisting of fats, fatty acids, waxes and mixtures thereof, present in an amount ranging from about 20% to about 100% by weight of the combination of said core material and said first hydrophilic coating.
Claim 2
Dependent Claim
112 words
A delivery system for a zinc salt providing reduced bitterness with improved mouthfeed and high temperature stability, comprising: (a) a core material comprising a zinc salt selected from the group consisting of inorganic salts of zinc, organic salts of zinc and mixtures thereof; (b) a first hydrophilic coating comprising a hydrocolloid material in an amount of from about 10% to about 50% by weight of said core material; and (c) a second hydrophobic coating selected from the group consisting of fats, fatty acids, waxes and mixtures thereof, present in an amount ranging from about 20% to about 100% by weight of the combination of said core material and said first hydrophilic coating.
Claim 3
Dependent Claim
49 words
A delivery system of claim 1 wherein said inorganic salts of zinc are selected from the group consisting of zinc bromide, zinc chloride, zinc iodine, zinc fluoride, zinc ammonium sulfate, zinc chromate, zinc fluorosilicate, zinc dithionate, zinc sulfate, zinc nitrate, zinc phosphate, zinc fluorozirconate, zinc oxide, and mixtures thereof.
Claim 4
Dependent Claim
50 words
The delivery system of claim 1 wherein said organic salts of zinc are selected from the group consisting of zinc citrate, zinc acetate, zinc gluconate, zinc asparate, zinc ascorbate, zinc oroate, zinc divalent amino acid zinc salts, zinc succinate, zinc tartrate, zinc glycerophosphate, zinc salicylate, zinc formate, and mixtures thereof.
Claim 5
Dependent Claim
13 words
The delivery system of any one of claims 1-3 further including an excipient.
Claim 6
Dependent Claim
23 words
The delivery system of claim 4 wherein said excipient is selected from the group consisting of carbohydrate materials, polyhydric alcohols, and mixtures thereof.
Claim 7
Dependent Claim
30 words
The delivery system of claim 4 wherein said excipient is selected from the group consisting of monosaccharides, disaccharides, polysaccharides, partially hydrolyzed starch, corn syrup solids, sugar alcohols, and mixtures thereof.
Claim 8
Dependent Claim
27 words
The delivery system of claim 4 wherein said excipient is present in an amount of from about 1% to about 80% by weight of said core material.
Claim 9
Dependent Claim
22 words
The delivery system of claim 1 wherein said hydrocolloid is selected from the group consisting of gums, pectins, alginates, and mixtures thereof.
Claim 10
Dependent Claim
29 words
The delivery system of claim 8 wherein said hydrocolloid is selected from the group consisting of gum arabic, tragacanth, karaya, ghatti, agar, alginates, carrageenans, furcellaran, psyllium, and mixtures thereof.
Claim 11
Dependent Claim
42 words
The delivery system of claim 8 wherein said hydrocolloid is selected from the group consisting of polyvinyl pyrrolidone, gelatin, dextran, xanthan, curdan, cellulose, methylcellulose, ethylcellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methylcellulose, carboxymethyl cellulose, low methoxy pectin, propylene glycol alginate, and mixtures thereof.
Claim 12
Dependent Claim
28 words
The delivery system of claim 1 wherein said first coating is present in an amount of from about 10% to about 25% by weight of the core material.
Claim 13
Dependent Claim
35 words
The delivery system of claim 1 wherein said second coating is present in an amount of from about 20% to about 50% by weight of the combination of the core material and the first coating.
Claim 14
Dependent Claim
47 words
The delivery system of claim 1 wherein said first coating is present in an amount of 25% by weight of the core material and said second coating is present in an amount of 50% by weight of the combination of the core material and the first coating.
Claim 15
Dependent Claim
25 words
The delivery system of claim 1 wherein the fat is a fatty acid is selected from the group consisting of hydrogenated and partially hydrogenated oils.
Claim 16
Dependent Claim
41 words
The delivery system of claim 14 wherein the hydrogenated or partially hydrogenated oils are selected from the group consisting of palm oil, palm kernel oil, soybean oil, rapeseed oil, rice bran oil, cottonseed oil, sunflower oil, safflower oil, and mixtures thereof.
Claim 17
Dependent Claim
26 words
The delivery system of claim 1 wherein the fat is selected from the group consisting of monoglycerides, diglycerides, triglycerides, polyglycerol esters, sorbitol esters, and mixtures thereof.
Claim 18
Dependent Claim
23 words
The delivery system of claim 1 wherein the wax is selected from the group consisting of natural waxes, synthetic waxes and mixtures thereof.
Claim 19
Dependent Claim
41 words
The delivery system of claim 17 wherein the wax is selected from the group consisting of paraffin wax beeswax, carnauba wax, candelilla wax, lanolin wax, bayberry wax, sugar cane wax, petrolatum, polyethylene glycol, spermaceti wax, rice bran wax, and mixtures thereof.
Claim 20
Dependent Claim
12 words
The delivery system of claim 1 incorporated into a chewing gum composition.
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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) | 1994-10-21 | 1995-04-22 | 1995-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-21 | 1999-04-22 | 1999-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-21 | 2003-04-22 | 2003-10-22 | $7700.00 | Window Closed / Lapsed |