US5049440A
Expired / Lapsed
US
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Wet wiper natural acid and salt preservative composition
Assignee: Fort James Corp
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Filing: 1989-07-28
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Granted: 1991-09-17
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Expires: 2009-07-28
Abstract
Abstract An antimicrobially active wet wiper product having a fibrous wipe and a hypotonic liquid preservative composition for the wipe. The liquid preservative composition comprises: (i) water, (ii) a naturally occurring organic acid in an amount effective to be a preservative, and (iii) a naturally occurring salt in a concentration effective to increase the efficacy of the naturally occurring organic acid.
Inventors
- 👤 John W. Bornhoeft, III
- 👤 Jerry R. Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:50
CPC Classifications
A; A61; A61Q; A61Q17/00; A61Q17/005; A01; A01N; A01N25/00; A01N25/34; A61K; A61K8/00; A61K8/02; A61K8/0208; A61K8/18; A61K8/19; A61K8/20; A61K8/30; A61K8/33; A61K8/36; A61K8/365; D; D01; D01H; D01H13/00; D01H13/30; D06; D06M; D06M11/00; D06M11/07; D06M11/11; D06M11/13; D06M11/68; D06M11/70; D06M11/71; D06M13/00; D06M13/10; D06M13/184; D06M16/00; Y; Y10; Y10S; Y10S206/00; Y10S206/812; Y10T; Y10T428/00; Y10T428/23; Y10T428/237; Y10T442/00; Y10T442/20; Y10T442/2525
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
55 words
A wet wiper product comprising: (a) a fibrous wipe; and (b) a hypotonic liquid preservative composition for the wipe comprising: (i) water, (ii) naturally occurring organic acid in an amount effective to be a preservative, and (iii) a naturally occurring salt in an amount effective to increase the efficacy of the naturally occurring organic acid.
Claim 2
Dependent Claim
55 words
A wet wiper product comprising: (a) a fibrous wipe; and (b) a hypotonic liquid preservative composition for the wipe comprising: (i) water, (ii) naturally occurring organic acid in an amount effective to be a preservative, and (iii) a naturally occurring salt in an amount effective to increase the efficacy of the naturally occurring organic acid.
Claim 3
Dependent Claim
30 words
The wet wiper of claim 1, wherein the organic acid is selected from the group consisting of citric acid, sorbic acid, malic acid, tartaric acid, benzoic acid, and mixtures thereof
Claim 4
Dependent Claim
32 words
The wet wiper of claim 1, wherein the organic acid is present in a concentration within the range of about 0.1 to about 0.7 w/v % based upon the liquid preservative composition.
Claim 5
Dependent Claim
43 words
The wet wiper of claim 1, wherein the organic acid comprises a mixture of about 0.01 w/v % to about 0.2 w/v % sorbic acid and about 0.1 w/v % to about 0.5 w/v % citric acid based upon the liquid preservative composition.
Claim 6
Dependent Claim
28 words
The wet wiper of claim 1, wherein the salt is selected from the group consisting of monobasic or dibasic sodium phosphate, potassium chloride, sodium chloride, and mixtures thereof.
Claim 7
Dependent Claim
30 words
The wet wiper of claim 1, wherein the salt is present in a concentration of about 0.1 w/v % to about 0.9 w/v % based upon the liquid preservative composition.
Claim 8
Dependent Claim
16 words
The wet wiper of claim 1, wherein the fibrous wipe is an antimicrobially active non-woven web.
Claim 9
Dependent Claim
26 words
The wet wiper of claim 1, wherein the liquid preservative composition has an osmotic pressure within the range of about 110 milli-osmole/kg to about 280 milli-osmole/kg.
Claim 10
Dependent Claim
98 words
A wet wiper product comprising: (a) a fibrous wipe; and (b) a liquid preservative composition for the wipe comprising: (i) water, (ii) a naturally occurring organic acid selected from the group consisting of sorbic acid, citric acid, malic acid, tartaric acid, benzoic acid, and mixtures thereof and present in an amount effective to be a preservative, and (iii) a naturally occurring salt selected from the group consisting of monobasic or dibasic sodium phosphate, potassium chloride, sodium chloride, and mixtures thereof, the salt being present in an amount effective to increase the efficacy of the naturally occurring organic acid.
Claim 11
Dependent Claim
98 words
A wet wiper product comprising: (a) a fibrous wipe; and (b) a liquid preservative composition for the wipe comprising: (i) water, (ii) a naturally occurring organic acid selected from the group consisting of sorbic acid, citric acid, malic acid, tartaric acid, benzoic acid, and mixtures thereof and present in an amount effective to be a preservative, and (iii) a naturally occurring salt selected from the group consisting of monobasic or dibasic sodium phosphate, potassium chloride, sodium chloride, and mixtures thereof, the salt being present in an amount effective to increase the efficacy of the naturally occurring organic acid.
Claim 12
Dependent Claim
31 words
The wet wiper of claim 9, wherein the organic acid is present in a concentration of about 0.1 w/v % to about 0.7 w/v % based upon the liquid preservative composition.
Claim 13
Dependent Claim
31 words
The wet wiper of claim 10, wherein the organic salt is present in a concentration of about 0.1 w/v % to about 0.9 w/v % based upon the liquid preservative composition.
Claim 14
Dependent Claim
31 words
The wet wiper of claim 10, wherein the organic salt is present in a concentration of about 0.1 w/v % to about 0.5 w/v % based upon the liquid preservative composition.
Claim 15
Dependent Claim
43 words
The wet wiper of claim 9, wherein the organic acid comprises a mixture of about 0.01 w/v % to about 0.20 w/v % sorbic acid and about 0.1 w/v % to about 0.5 w/v % citric acid based upon the liquid preservative composition.
Claim 16
Dependent Claim
44 words
The wet wiper of claim 13, wherein the sorbic acid is present in the range of about 0.05 w/v % to about 0.10 w/v % and the citric acid is present in the range of about 0.3 w/v % to about 0.5 w/v %.
Claim 17
Dependent Claim
24 words
The wet wiper of claim 9, wherein the pH of the liquid preservative composition is in the range of about 2.0 to about 3.2.
Claim 18
Dependent Claim
29 words
The wet wiper of claim 9, wherein the liquid preservative composition is hypotonic and has an osmotic pressure within the range of about 110 milli-osmole/kg to about 280 milli-osmole/kg.
Claim 19
Dependent Claim
86 words
An antimicrobially active wet wiper comprising: (a) a fibrous wipe, and (b) a hypotonic liquid preservative composition for the wipe comprising: (i) water, (ii) a naturally occurring organic acid comprising a mixture of about 0.01 w/v % to about 0.20 w/v % sorbic acid and about 0.1 w/v % to about 0.5 w/v % citric acid based upon the liquid preservative composition, and (iii) a naturally occurring salt comprising about 0.1 w/v % to about 0.5 w/v % sodium chloride based upon the liquid preservative composition.
Claim 20
Dependent Claim
86 words
An antimicrobially active wet wiper comprising: (a) a fibrous wipe, and (b) a hypotonic liquid preservative composition for the wipe comprising: (i) water, (ii) a naturally occurring organic acid comprising a mixture of about 0.01 w/v % to about 0.20 w/v % sorbic acid and about 0.1 w/v % to about 0.5 w/v % citric acid based upon the liquid preservative composition, and (iii) a naturally occurring salt comprising about 0.1 w/v % to about 0.5 w/v % sodium chloride based upon the liquid preservative composition.
Claim 21
Dependent Claim
39 words
The wet wiper of claim 17, wherein the liquid preservative composition has an osmotic pressure within the range of about 110 milli-osmole/kg to about 280 milli-osmole/kg and a pH within the range of about 2.0 to about 3 2.
Claim 22
Dependent Claim
71 words
The wet wiper of claim 18, wherein the sorbic acid is present in an amount within the range of about 0.05 w/v % to about 0.10 w/v % and the citric acid is present in the range of about 0.3 w/v % to about 0.5 w/v %, the weight percent ratio of citric acid to sorbic acid being in the range of about 20 to 1 to about 1 to 1.
Claim 23
Dependent Claim
16 words
The wet wiper of claim 19, wherein the fibrous wipe is an antimicrobially active non-woven web.
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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) | 1994-09-16 | 1995-03-18 | 1995-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-16 | 1999-03-18 | 1999-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-16 | 2003-03-18 | 2003-09-17 | $7700.00 | Window Closed / Lapsed |