US4929498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engineered-pulp wet wiper fabric
Assignee: Fort James Corp
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Filing: 1989-01-31
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Granted: 1990-05-29
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Expires: 2009-01-31
Abstract
Abstract Discolsed are wet wiper products that incorporate antimicrobially-active nonwoven fabrics, preferably comprising: bonded fibers; a binder distributed on said fibers; and an antimicrobial agent distributed on from 10% through 50% of said fibers, said antimicrobial agent being substantive to said fibers such that said antimicrobial agent is prevented from substantially diffusing from said fabric.
Inventors
- 👤 Stuart P. Suskind
- 👤 Joseph H. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:44
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/84; A61F13/8405; A01; A01N; A01N25/00; A01N25/34; D; D06; D06M; D06M16/00; D21; D21H; D21H21/00; D21H21/14; D21H21/36; A61F2013/8408; A61F2013/8414; Y; Y10; Y10S; Y10S206/00; Y10S206/812; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249955; Y10T428/249959; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T442/00; Y10T442/20; Y10T442/2525
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
48 words
An antimicrobially-active nonwoven fabric suitable for use as a wet wiper that comprises fibers and an antimicrobial agent distributed on from 10% through 50% of said fibers, said antimicrobial agent being substantive to said fibers such that said antimicrobial agent is substantially prevented from diffusing from said fabric.
Claim 2
Dependent Claim
48 words
An antimicrobially-active nonwoven fabric suitable for use as a wet wiper that comprises fibers and an antimicrobial agent distributed on from 10% through 50% of said fibers, said antimicrobial agent being substantive to said fibers such that said antimicrobial agent is substantially prevented from diffusing from said fabric.
Claim 3
Dependent Claim
69 words
An antimicrobially-active nonwoven fabric according to claim 1 comprising: (a) bonded fibers; (b) a binder distributed on said fibers, said binder being present in an amount sufficient to bind said fibers into a fabric; and (c) an antimicrobial agent distributed on from 10% through 50% of said fibers, said antimicrobial agent being substantive to said fibers such that said antimicrobial agent is substantially prevented from diffusing from said fabric.
Claim 4
Dependent Claim
22 words
The web of claim 1, wherein said fibers are selected from the group consisting of cellulosic fibers, synthetic fibers, and combinations thereof.
Claim 5
Dependent Claim
13 words
The web of claim 2, wherein said fibers are derived from wood pulp.
Claim 6
Dependent Claim
10 words
The web of claim 4, wherein said web is airlaid.
Claim 7
Dependent Claim
12 words
The web of claim 5, wherein said binder is a latex binder.
Claim 8
Dependent Claim
26 words
The web of claim 6, wherein the amount of said binder is in the range of about 5% to about 30% of the total web weight.
Claim 9
Dependent Claim
18 words
The web of claim 1, wherein said antimicrobial agent is safe for contact with human skin and eyes.
Claim 10
Dependent Claim
15 words
The web of claim 8, wherein said antimicrobial agent is an organosilicon quaternary ammonium salt.
Claim 11
Dependent Claim
15 words
The web of claim 2, wherein said antimicrobial agent is an organosilicon quaternary ammonium salt.
Claim 12
Dependent Claim
70 words
The web of claim 10, wherein said organosilicon quaternary ammonium salt is selected from the group consisting of those having the formula [(RO).sub.3 Si(CH.sub.2).sub.n NR.sub.1 R.sub.2 R.sub.3 ].sup.+ X.sup.- in which R is lower alkyl, n is an integer from 2 through 8, R 1 is an alkyl group of 9 through 22 carbon atoms, R 2 and R 3 are lower alkyl, and X is a pharmaceutically acceptable anion.
Claim 13
Dependent Claim
10 words
The web of claim 11, wherein said anion is chloride.
Claim 14
Dependent Claim
11 words
The web of claim 12, wherein said salt is 3-(trimethoxysilyl)propyloctadecyldimethylammonium chloride.
Claim 15
Dependent Claim
21 words
The web of claim 10, wherein said antimicrobial agent is distributed on from 20% through 40% of fibers in the web.
Claim 16
Dependent Claim
26 words
The web of claim 14, wherein the amount of said antimicrobial agent is in the range of 0.1% to about 3% of the total web weight.
Claim 17
Dependent Claim
16 words
An airlaid web according to claim 2 comprising cellulosic fibers, a latex binder, and 3-(trimethoxysilyl)propyloctadecyldimethylammonium chloride.
Claim 18
Dependent Claim
11 words
A wet wiper comprising a nonwoven fabric according to claim 1.
Claim 19
Dependent Claim
11 words
A wet wiper comprising a nonwoven fabric according to claim 2.
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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) | 1993-05-28 | 1993-11-27 | 1994-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-28 | 1997-11-27 | 1998-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-28 | 2001-11-27 | 2002-05-29 | $7700.00 | Window Closed / Lapsed |