Patent US2452909A successfully refreshed from Google Patents.
Patent US4738847A successfully refreshed from Google Patents.
US4738847A
Expired / Lapsed
US
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Multi-ply virucidal product
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1985-01-14
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Granted: 1988-04-19
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Expires: 2005-01-14
Abstract
Abstract A multi-ply absorbent product, such as a facial tissue, comprising a virucidal composition substantially confined to the middle of the product reduces or eliminates any stinging response associated with contacting the virucidal composition with certain sensitive parts of the body, such as the eyes and nose, yet simultaneously retains virucidal efficacy.
Inventors
- 👤 Robert A. Rothe
- 👤 Christopher Creagan
- 👤 Harry L. Spiegelberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:12
CPC Classifications
D; D21; D21H; D21H27/00; D21H27/30; D21H21/00; D21H21/14; D21H21/36; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2525
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
55 words
A facial tissue comprising three cellulosic plies and a virucidally effective amount of a virucidal composition, wherein said virucidal composition is dry and substantially confined to the center ply and wherein said virucidal composition comprises an acid selected from the group consisting of citric acid, malic acid, and mixture of citric acid and malic acid.
Claim 2
Dependent Claim
55 words
A facial tissue comprising three cellulosic plies and a virucidally effective amount of a virucidal composition, wherein said virucidal composition is dry and substantially confined to the center ply and wherein said virucidal composition comprises an acid selected from the group consisting of citric acid, malic acid, and mixture of citric acid and malic acid.
Claim 3
Dependent Claim
12 words
The facial tissue of claim 1 wherein the acid is citric acid.
Claim 4
Dependent Claim
12 words
The facial tissue of claim 1 wherein the acid is malic acid.
Claim 5
Dependent Claim
18 words
The facial tissue of claim 1 wherein the acid is a mixture of citric acid and malic acid.
Claim 6
Dependent Claim
14 words
The facial tissue of claim 2, 3, or 4 further comprising sodium lauryl sulfate.
Claim 7
Dependent Claim
30 words
The tissue of claim 1 wherein the amount of the virucidal composition is about 2 air dry weight percent or greater, based on the air dry weight of the tissue.
Claim 8
Dependent Claim
41 words
A facial tissue comprising three cellulosic plies and a virucidally effective amount of a virucidal composition, wherein said virucidal composition is dry and substantially confined to the center ply and wherein said virucidal composition comprises a carboxylic acid and a surfactant.
Claim 9
Dependent Claim
41 words
A facial tissue comprising three cellulosic plies and a virucidally effective amount of a virucidal composition, wherein said virucidal composition is dry and substantially confined to the center ply and wherein said virucidal composition comprises a carboxylic acid and a surfactant.
Claim 10
Dependent Claim
12 words
The tissue of claim 7 wherein the surfactant is an anionic surfactant.
Claim 11
Dependent Claim
12 words
The tissue of claim 8 wherein the surfactant is sodium lauryl sulfate.
Claim 12
Dependent Claim
30 words
The tissue of claim 7 wherein the amount of the virucidal composition is about 2 air dry weight percent or greater, based on the air dry weight of the tissue.
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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) | 1991-04-19 | 1991-10-19 | 1992-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-19 | 1995-10-19 | 1996-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-19 | 1999-10-19 | 2000-04-19 | $7700.00 | Window Closed / Lapsed |