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US4094967A
Expired / Lapsed
US
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Iodine-polyvinylpyrrolidone solid product and method of preparation
Assignee: Allor Foundation
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Filing: 1976-10-22
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Granted: 1978-06-13
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Expires: 1996-10-22
Abstract
Abstract This disclosure relates to novel iodine-polyvinylpyrrolidone products in which, by novel preparation methods, the iodine is adherently bound within solid polyvinylpyrrolidone, with solidified cinnamic alcohol adherently distributed therethrough and, in preferred instances, with solidified tannic acid adherently dispersed therewithin, and all in preferred proportions.
Inventors
- 👤 Joseph G. Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:42
CPC Classifications
A; A61; A61Q; A61Q17/00; A61Q17/005; A01; A01N; A01N59/00; A01N59/12; A61K; A61K47/00; A61K47/50; A61K47/51; A61K47/56; A61K47/58; A61K8/00; A61K8/18; A61K8/19; A61K8/20; A61K8/30; A61K8/33; A61K8/34; A61K8/60; A61K8/602; A61K8/72; A61K8/81; A61K8/817; A61K8/8176
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
86 words
A method of making a polyvinylpyrrolidone-iodine composition in which the iodine is stored in solid form protected from light and air-exposure deterioration and is continuously releasable for active pharmacological use by application of at least one of heat and moisture, that comprises, preparing an alcohol or aqueous solution of finely powdered crystalline iodine; forming a solution of polyvinylpyrrolidone; admixing the iodine solution with the polyvinylpyrrolidone solution; adding cinnamic alcohol and thoroughly dispersing the same in the iodine solution-polyvinylpyrrolidone solution; and drying the solution to solid state.
Claim 2
Independent Claim
86 words
A method of making a polyvinylpyrrolidone-iodine composition in which the iodine is stored in solid form protected from light and air-exposure deterioration and is continuously releasable for active pharmacological use by application of at least one of heat and moisture, that comprises, preparing an alcohol or aqueous solution of finely powdered crystalline iodine; forming a solution of polyvinylpyrrolidone; admixing the iodine solution with the polyvinylpyrrolidone solution; adding cinnamic alcohol and thoroughly dispersing the same in the iodine solution-polyvinylpyrrolidone solution; and drying the solution to solid state.
Claim 3
Dependent Claim
28 words
The method of claim 1 and in which, following the addition of the cinnamic alcohol but prior to said drying, tannic acid is added to the polyvinylpyrrolidone-iodine solution.
Claim 4
Dependent Claim
23 words
The method of claim 1 and in which the solid iodine constitutes substantially 1/2 to 3% by weight of the solid state product.
Claim 5
Dependent Claim
27 words
The method of claim 1 and in which the weight percentages of the constituents are substantially within the ranges: polyvinylpyrrolidone, 82-90%; cinnamic alcohol, 3-15%; and iodine, 1/2-3%.
Claim 6
Dependent Claim
24 words
The method of claim 4 and in which tannic acid is added prior to said drying having substantially a weight percentage range of 3-12%.
Claim 7
Dependent Claim
22 words
The method of claim 1 and in which the polyvinylpyrrolidone is in water, and the cinnamic alcohol is added in liquid form.
Claim 8
Dependent Claim
14 words
The method of claim 5 and in which the iodine alcohol solvent comprises ethanol.
Claim 9
Dependent Claim
17 words
A solid dry polyvinylpyrrolidone-iodine complex comprising about 82-90% polyvinylpyrrolidone, 1/2-3% iodine, and 3-15% cinnamic alcohol, by weight.
Claim 10
Dependent Claim
17 words
A solid dry polyvinylpyrrolidone-iodine complex comprising about 82-90% polyvinylpyrrolidone, 1/2-3% iodine, and 3-15% cinnamic alcohol, by weight.
Claim 11
Dependent Claim
17 words
The complex of claim 8 and in which the complex comprises about 3-12% tannic acid, by weight.
Claim 12
Dependent Claim
14 words
The complex of claim 8 and in which the complex costs a bandage substrate.
Claim 13
Dependent Claim
13 words
The complex of claim 8 and in which the complex coats a swab.
Claim 14
Dependent Claim
12 words
The complex of claim 8 and in which the complex is powdered.
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) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |