US5830810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonwoven barrier and method of making the same
Assignee: Avent Inc
•
Filing: 1997-02-20
•
Granted: 1998-11-03
•
Expires: 2017-02-20
Abstract
Abstract A plasma sterilizable fabric which is subjected to charging, for example electrostatic charging, is provided. Plasma sterilizable fabrics may include nonwovens and laminate nonwovens. The plasma sterilizable fabrics may also be treated with an antistatic material before or after subjecting the same to charging.
Inventors
- 👤 Bernard Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:32
CPC Classifications
D; D06; D06M; D06M10/00; D06M10/02; D06M10/025; A; A61; A61L; A61L2/00; A61L2/02; A61L2/14; D04; D04H; D04H3/00; D04H3/08; D04H3/14; D04H3/16; D06M2101/00; D06M2101/02; D06M2101/04; D06M2101/06; D06M2101/10; D06M2101/12; D06M2101/14; D06M2101/16; D06M2101/18; Y; Y10; Y10S; Y10S2/00; Y10S2/901; Y10S264/00; Y10S264/48; Y10S55/00; Y10S55/05; Y10S55/39; Y10T; Y10T442/00; Y10T442/20; Y10T442/2418
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
12 words
A method of manufacturing a fabric comprising plasma sterilizing a charged fabric.
Claim 2
Independent Claim
12 words
A method of manufacturing a fabric comprising plasma sterilizing a charged fabric.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein the fabric is plasma sterilized prior to being subjected to charging.
Claim 4
Dependent Claim
17 words
The method of claim 1 wherein the fabric is subjected to charging prior to being plasma sterilized.
Claim 5
Dependent Claim
11 words
The method of claim 1 wherein the charging is electrostatic charging.
Claim 6
Dependent Claim
12 words
The method of claim 1 wherein the fabric is a nonwoven fabric.
Claim 7
Dependent Claim
18 words
The method of claim 1 wherein the fabric comprises first and second nonwoven fabrics positioned in juxtaposed relationship.
Claim 8
Dependent Claim
21 words
The method of claim 6 wherein the first and second nonwoven fabrics are positioned in juxtaposed relationship after the charging step.
Claim 9
Dependent Claim
24 words
The method of claim 7 wherein the first nonwoven fabric is subjected to charging and the second nonwoven fabric is not subjected to charging.
Claim 10
Dependent Claim
16 words
The method of claim 6 wherein the first nonwoven fabric is treated with an antistatic material.
Claim 11
Dependent Claim
16 words
The method of claim 9 wherein the second nonwoven fabric is treated with an antistatic material.
Claim 12
Independent Claim
23 words
A method of manufacturing a nonwoven fabric comprising plasma sterilizing a charged nonwoven fabric and treating the nonwoven fabric with an antistatic material.
Claim 13
Independent Claim
23 words
A method of manufacturing a nonwoven fabric comprising plasma sterilizing a charged nonwoven fabric and treating the nonwoven fabric with an antistatic material.
Claim 14
Dependent Claim
19 words
The method of claim 11 wherein the nonwoven fabric is treated with the antistatic material prior to being charged.
Claim 15
Dependent Claim
19 words
The method of claim 11 wherein the nonwoven fabric is charged prior to being treated with the antistatic material.
Claim 16
Dependent Claim
12 words
The method of claim 11 wherein the fabric has been electrostatically charged.
Claim 17
Dependent Claim
20 words
The method of claim 11 wherein the nonwoven material is a nonwoven laminate comprising first, second and third nonwoven plies.
Claim 18
Dependent Claim
17 words
The method of claim 15 wherein at least one of the plies has been subjected to charging.
Claim 19
Dependent Claim
26 words
The method of claim 16 wherein the second nonwoven ply is subjected to charging and the first and third nonwoven plies are not subjected to charging.
Claim 20
Dependent Claim
10 words
A plasma sterilized fabric that has been subjected to charging.
Claim 21
Dependent Claim
10 words
A plasma sterilized fabric that has been subjected to charging.
Claim 22
Dependent Claim
20 words
The plasma sterilized fabric of claim 18 wherein the fabric comprises first and second nonwoven fabrics positioned in juxtaposed relationship.
Claim 23
Dependent Claim
17 words
The plasma sterilized fabric of claim 18 wherein the fabric has been treated with an antistatic material.
Claim 24
Dependent Claim
20 words
The plasma sterilized fabric of claim 20 wherein the fabric is a nonwoven laminate comprising first and second nonwoven plies.
Claim 25
Dependent Claim
14 words
A charged, plasma sterilized fabric having a bacterial filtration efficiency of at least 94%.
Claim 26
Dependent Claim
14 words
A charged, plasma sterilized fabric having a bacterial filtration efficiency of at least 94%.
Claim 27
Dependent Claim
14 words
The charged fabric of claim 22 wherein the fabric is an electrostatically charged fabric.
Claim 28
Dependent Claim
13 words
The charged fabric of claim 22 wherein the fabric is a nonwoven fabric.
Claim 29
Dependent Claim
19 words
The charged fabric of claim 24 wherein the nonwoven fabric comprises two outer layers separated by an intermediate layer.
Claim 30
Dependent Claim
23 words
The charged fabric of claim 25 wherein the two outer layers are spunbond nonwoven layers and the intermediate layer is a meltblown layer.
Claim 31
Dependent Claim
9 words
The charged fabric of claim 22 containing antistatic material.
Claim 32
Dependent Claim
14 words
A fabric prepared by a process comprising sterilizing a charged fabric by plasma sterilization.
Claim 33
Dependent Claim
14 words
A fabric prepared by a process comprising sterilizing a charged fabric by plasma sterilization.
Claim 34
Dependent Claim
14 words
The fabric of claim 28 wherein the charged fabric is an electrostatically charged fabric.
Claim 35
Dependent Claim
13 words
The fabric of claim 28 wherein the charged fabric is a nonwoven fabric.
Claim 36
Dependent Claim
18 words
The fabric of claim 30 wherein the nonwoven fabric comprises two outer layers separated by an intermediate layer.
Claim 37
Dependent Claim
22 words
The fabric of claim 31 wherein the two outer layers are spunbond nonwoven layers and the intermediate layer is a meltblown layer.
Claim 38
Dependent Claim
15 words
The fabric of claim 28 wherein the process further comprises treatment with an antistatic material.
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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) | 2001-11-02 | 2002-05-04 | 2002-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-02 | 2006-05-04 | 2006-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-02 | 2010-05-04 | 2010-11-03 | $7700.00 | Window Closed / Lapsed |