US5236703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric substrates containing povidone-iodine as a control release biologically active agent
Assignee: Immunix Inc
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Filing: 1989-07-20
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Granted: 1993-08-17
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Expires: 2009-07-20
Abstract
Abstract A polymeric substrate such as rubber or latex incorporates povidone-iodine as a control release biologically active agent.
Inventors
- 👤 Anton-Lewis Usala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:29
CPC Classifications
A; A01; A01N; A01N59/00; A01N59/12; A61; A61L; A61L29/00; A61L29/14; A61L29/16; A61L31/00; A61L31/14; A61L31/16; C; C09; C09D; C09D121/00; C09D121/02; A61L2300/00; A61L2300/20; A61L2300/202; A61L2300/40; A61L2300/404; A61L2300/60; A61L2300/602; Y; Y10; Y10T; Y10T428/00; Y10T428/28
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
133 words
A polymeric film which control-releases a biologically active agent while in contact with a polar liquid to prevent the contamination and penetration of pathogens through said film, comprising: at least one layer of said polymeric film having dispersed therein povidone-iodine in the range of about 0.01% to 25% as said biologically active agent; said polymeric film prepared from a dispersion of said povidone-iodine and a film-forming polymeric material prepared by homopolymerization or copolymerization of ethylene monomers or monomers having at least two conjugated double bonds and capable of being vulcanized or cross-linked, said polymeric film being heated at elevated temperatures for a length of time varying with respect to the temperature and the amount of said povidone-iodine to control the release of said povidone-iodine from said film upon contact with said polar liquid.
Claim 2
Dependent Claim
133 words
A polymeric film which control-releases a biologically active agent while in contact with a polar liquid to prevent the contamination and penetration of pathogens through said film, comprising: at least one layer of said polymeric film having dispersed therein povidone-iodine in the range of about 0.01% to 25% as said biologically active agent; said polymeric film prepared from a dispersion of said povidone-iodine and a film-forming polymeric material prepared by homopolymerization or copolymerization of ethylene monomers or monomers having at least two conjugated double bonds and capable of being vulcanized or cross-linked, said polymeric film being heated at elevated temperatures for a length of time varying with respect to the temperature and the amount of said povidone-iodine to control the release of said povidone-iodine from said film upon contact with said polar liquid.
Claim 3
Dependent Claim
16 words
The polymeric film as recited in claim 1 wherein said film-forming polymeric material is latex rubber.
Claim 4
Dependent Claim
36 words
The polymeric film as recited in claim 1 further characterized as comprising at least two layers of the polymeric film, one of said layers having a larger amount of povidone-iodine in comparison with the other layers.
Claim 5
Dependent Claim
32 words
The polymeric film as recited in claim 1 further characterized as comprising at least two layers of the polymeric film with about 0.01 to 10% by weight of povidone-iodine in each layer.
Claim 6
Dependent Claim
31 words
The polymeric film as recited in claim 4 wherein at least one of said layers of the polymeric film has dispersed therein a larger amount of povidone-iodine than the other layers.
Claim 7
Dependent Claim
54 words
The polymeric film as recited in claim 1 further characterized as comprising a plurality of layers of polymeric film at least one layer of said plurality of layers having dispersed therein a different amount of povidone-iodine and heated for a different length of time at a different temperature in comparison with the other layers.
Claim 8
Dependent Claim
52 words
A latex substrate comprising: a heat cured latex rubber having bonded thereto a predetermined amount of povidone-iodine substantially through van der Waals bonds by controlled heating thereby enabling local release of said povidone-iodine therefrom upon contact with a polar liquid, said predetermined amount being in the range of about 0.01% to 25%.
Claim 9
Dependent Claim
52 words
A latex substrate comprising: a heat cured latex rubber having bonded thereto a predetermined amount of povidone-iodine substantially through van der Waals bonds by controlled heating thereby enabling local release of said povidone-iodine therefrom upon contact with a polar liquid, said predetermined amount being in the range of about 0.01% to 25%.
Claim 10
Dependent Claim
55 words
A latex substrate comprising: a film layer of cured latex rubber incorporating povidone-iodine therewithin formed from a mixture comprising said latex rubber and said povidone-iodine, said mixture being processed to a predetermined exclusion of covalent bonding between said latex rubber and said povidone-iodine, said povidone-iodine being present in the amount of about 0.1% to 10%.
Claim 11
Dependent Claim
55 words
A latex substrate comprising: a film layer of cured latex rubber incorporating povidone-iodine therewithin formed from a mixture comprising said latex rubber and said povidone-iodine, said mixture being processed to a predetermined exclusion of covalent bonding between said latex rubber and said povidone-iodine, said povidone-iodine being present in the amount of about 0.1% to 10%.
Claim 12
Dependent Claim
69 words
A latex rubber substrate comprising: a latex rubber and an effective amount of povidone-iodine formed from a mixture comprising said latex and said povidone-iodine, said povidone-iodine being in the amount of about 0.01% to 25% and functioning as a vulcanizing and cross linking agent upon heating of said mixture at temperatures below about 400° to permit release of said povidone-iodine as an antimicrobial upon contact with a polar liquid.
Claim 13
Dependent Claim
69 words
A latex rubber substrate comprising: a latex rubber and an effective amount of povidone-iodine formed from a mixture comprising said latex and said povidone-iodine, said povidone-iodine being in the amount of about 0.01% to 25% and functioning as a vulcanizing and cross linking agent upon heating of said mixture at temperatures below about 400° to permit release of said povidone-iodine as an antimicrobial upon contact with a polar liquid.
Claim 14
Dependent Claim
53 words
A multilayer latex article comprising: a plurality of heat cured latex rubber substrate films, at least one of said films being a controlled release film having incorporated therewithin povidone-iodine in the range of about 0.01% to 25%, said povidone-iodine in said controlled release film having controlled van der Waals bonding with said latex.
Claim 15
Dependent Claim
53 words
A multilayer latex article comprising: a plurality of heat cured latex rubber substrate films, at least one of said films being a controlled release film having incorporated therewithin povidone-iodine in the range of about 0.01% to 25%, said povidone-iodine in said controlled release film having controlled van der Waals bonding with said latex.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-08-16 | 1997-02-15 | 1997-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-16 | 2001-02-15 | 2001-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-16 | 2005-02-15 | 2005-08-17 | $7700.00 | Window Closed / Lapsed |