US5165953A
Expired / Lapsed
US
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Method of forming a membrane, especially a latex membrane, having a biocide barrier
Assignee: Bio Barrier Inc
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Filing: 1992-01-24
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Granted: 1992-11-24
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Expires: 2012-01-24
Abstract
Abstract Methods of forming a chemical barrier against the transmission of disease-causing microbes and other harmful agents through a membrane such as latex. In the principal method, a mold or former is coded with a coagulant, which is dried, and then the former is dipped into liquid latex, which is allowed to gel, and then the former is dipped into a solution containing the biocide, and then the former is dipped again into the liquid latex, after which the entire coating on the former is cured. Alternatively, the biocide may be sprayed or otherwise applied onto the gelled latex.
Inventors
- 👤 Robin R. T. Shlenker
- 👤 Clive C. Solomons
- 👤 Jerry D. Plunkett
- 👤 Clayton S. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:47
CPC Classifications
A; A62; A62D; A62D5/00; A01; A01N; A01N25/00; A01N25/08; A01N25/10; A01N25/34; A61; A61B; A61B42/00; A61F; A61F6/00; A61F6/02; A61F6/04; A61L; A61L31/00; A61L31/14; A41; A41D; A41D19/00; A41D19/0055; A41D19/0058; A41D19/0082; A41D19/0096; A41D31/00; A41D31/04; A41D31/24; A41D31/245
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
55 words
A method of making a latex material having a biocide barrier comprising the steps of: applying a first coating of liquid latex onto a former; applying a coating of biocide over the first latex coating already on the former; and applying a second coating of liquid latex over the biocide and the first latex coating.
Claim 2
Independent Claim
55 words
A method of making a latex material having a biocide barrier comprising the steps of: applying a first coating of liquid latex onto a former; applying a coating of biocide over the first latex coating already on the former; and applying a second coating of liquid latex over the biocide and the first latex coating.
Claim 3
Dependent Claim
21 words
A method of making a latex material having a biocide barrier according to claim 1 wherein said biocide comprises gentian violet.
Claim 4
Dependent Claim
45 words
A method of making a latex material having a biocide barrier according to claim 1 wherein said biocide is selected from the group consisting of dextran sulphate, benzalkonium, betadyne, gentian violet, acriflavine and acridine dyes, mercurochrome, silver salts, and an extract of blue green algae.
Claim 5
Dependent Claim
48 words
A method of making a latex material having a biocide barrier according to claim 1 wherein said biocide is in a solution that coats over the first latex coating and said biocide is in a concentration substantially in the range of 0.10 percent to five percent by weight.
Claim 6
Dependent Claim
58 words
A method of making a latex material having a biocide barrier according to claim 1 wherein said biocide is in a solution that coats over the first latex coating and wherein the ratio of the mass of the biocide solution coating to the mass of the first latex coating is substantially in the range of 0.05 to 0.3.
Claim 7
Dependent Claim
33 words
A method of making a latex material having a biocide barrier according to claim 1 wherein said biocide coating is applied by dipping the first latex coating into a vat of biocide solution.
Claim 8
Independent Claim
29 words
A method of making a latex material having a biocide barrier according to claim wherein said biocide coating is applied by spraying the biocide over the first latex coating.
Claim 9
Dependent Claim
37 words
A method of making a latex material having a biocide barrier according to claim 1 wherein said biocide coating is applied over the first latex coating when the first latex coating is in a wet gel state.
Claim 10
Dependent Claim
56 words
A method of making a latex material having a biocide barrier according to claim 1 comprising the further step of leaching the first latex coating with water prior to applying the biocide coating, and wherein said biocide coating is applied over the first latex coating when the first latex coating is in a wet gel state.
Claim 11
Dependent Claim
44 words
A method of making a latex material having a biocide barrier according to claim 1 wherein said biocide is in a solution that coats over the first latex coating and wherein said solution is substantially completely dried prior to applying the second latex coating.
Claim 12
Independent Claim
51 words
A method of making a latex material having a biocide barrier comprising the steps of: applying a first coating of liquid latex onto a former; and applying a coating of biocide over the first latex coating already on the former when the first latex coating is in a wet gel state.
Claim 13
Independent Claim
51 words
A method of making a latex material having a biocide barrier comprising the steps of: applying a first coating of liquid latex onto a former; and applying a coating of biocide over the first latex coating already on the former when the first latex coating is in a wet gel state.
Claim 14
Dependent Claim
21 words
A method of making a latex material having a biocide barrier according to claim 11 wherein said biocide comprises gentian violet.
Claim 15
Dependent Claim
45 words
A method of making a latex material having a biocide barrier according to claim 11 wherein said biocide is selected from the group consisting of dextran sulphate, benzalkonium, betadyne, gentian violet, acriflavine and acridine dyes, mercurochrome, silver salts, and an extract of blue green algae.
Claim 16
Dependent Claim
48 words
A method of making a latex material having a biocide barrier according to claim 11 wherein said biocide is in a solution that coats over the first latex coating and said biocide is in a concentration substantially in the range of 0.10 percent to five percent by weight.
Claim 17
Dependent Claim
58 words
A method of making a latex material having a biocide barrier according to claim 11 wherein said biocide is in a solution that coats over the first latex coating and wherein the ratio of the mass of the biocide solution coating to the mass of the first latex coating is substantially in the range of 0.05 to 0.3.
Claim 18
Dependent Claim
33 words
A method of making a latex material having a biocide barrier according to claim 11 wherein said biocide coating is applied by dipping the first latex coating into a vat of biocide solution.
Claim 19
Dependent Claim
30 words
A method of making a latex material having a biocide barrier according to claim 11 wherein said biocide coating is applied by spraying the biocide over the first latex coating.
Claim 20
Dependent Claim
33 words
A method of making a latex material having a biocide barrier according to claim 11 comprising the further step of leaching the first latex coating with water prior to applying the biocide coating.
Claim 21
Independent Claim
40 words
A method of making a latex material having a biocide barrier comprising the steps of: applying a first coating of biocide onto a former; and applying a coating of liquid latex coating over the biocide coating already on the former.
Claim 22
Independent Claim
40 words
A method of making a latex material having a biocide barrier comprising the steps of: applying a first coating of biocide onto a former; and applying a coating of liquid latex coating over the biocide coating already on the former.
Claim 23
Dependent Claim
21 words
A method of making a latex material having a biocide barrier according to claim 19 wherein said biocide comprises gentian violet.
Claim 24
Dependent Claim
45 words
A method of making a latex material having a biocide barrier according to claim 19 wherein said biocide is selected from the group consisting of dextran sulphate, benzalkonium, betadyne, gentian violet, acriflavine and acridine dyes, mercurochrome, silver salts, and an extract of blue green algae.
Claim 25
Dependent Claim
37 words
A method of making a latex material having a biocide barrier according to claim 19 wherein said biocide is in a solution in a concentration substantially in the range of 0.10 percent to five percent by weight.
Claim 26
Dependent Claim
51 words
A method of making a latex material having a biocide barrier according to claim 19 wherein said biocide is in a solution and wherein the ratio of the mass of the biocide solution coating to the mass of the first latex coating is substantially in the range of 0.05 to 0.3.
References Cited (Backward Citations)
US4545841A
Cited
US4675347A
Cited
US4853978A
Cited
US4930522A
Cited
US4867968A
Cited
US5019096A
Cited
US4881277A
Cited
US4876293A
Cited
US4901372A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1995-11-24 | 1996-05-25 | 1996-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-24 | 2000-05-25 | 2000-11-24 | $3760.00 | Window Closed / Lapsed |
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