# US 8,785,367 B2 · Cleansing sheet

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- Number: US 8,785,367 B2
- Document ID: US8785367B2
- Status: Granted
- Kind: B2
- Application number: 13/712,099
- Filed: 2012-12-12
- Published: 2014-06-12
- Granted: 2014-07-22
- Earliest claimed: 2012-12-12
- Assignees: Lec, Inc.
- Applicants: Lec, Inc.
- Inventors: Michiaki Matsumoto
- Web page: https://patentgrep.com/patent/US8785367B2

## CPC

- A61K 8/0208: {Tissues; Wipes; Patches}
- A61K 8/416: {Quaternary ammonium compounds (A61K8/35 takes precedence)}
- A61K 8/42: Amides
- A61Q 19/005: {Preparations for sensitive skin}
- A61Q 19/10: Washing or bathing preparations
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS

## Abstract

A cleansing sheet including a nonwoven sheet impregnated with a cleaning agent, the cleaning agent containing 99.80 wt % to less than 99.95 wt % of purified water and more than 0.05 wt % to 0.20 wt % of a bactericidal preservative, the bactericidal preservative including more than 0.025 wt % to 0.10 wt % benzalkonium chloride, more than 0.0025 wt % to 0.01 wt % iodopropynyl butylcarbamate, and more than 0.0225 wt % to 0.09 wt % glycol, based on the total weight of the cleaning agent taken as 100 wt %. The cleaning sheet can be applied to the delicate skin of infants or the sensitive skin of elderly people.

## Claims

### Claim 1

A cleansing sheet comprising a nonwoven sheet impregnanted with a cleaning agent,
the cleaning agent consisting of 99.80 wt % to less than 99.95 wt % of purified water and more than 0.05 wt % to 0.20 wt % of a bactericidal and/or a fungicidal preservative,
the bactericidal and/or the fungicidal preservative consisting of more than 0.025 wt % to 0.10 wt % benzalkonium chloride, more than 0.0025 wt % to 0.01 wt % iodopropynyl butylcarbamate, and more than 0.0225 wt % to 0.09 wt % glycol based on the total weight of the cleaning agent taken as 100 wt %.

### Claim 2 (depends on 1)

The cleansing sheet according to claim 1, wherein the glycol is propylene glycol.

### Claim 3 (depends on 1)

The cleansing sheet according to claim 1, wherein the glycol is 1,3-butylene glycol.