Patent US4769022A successfully refreshed from Google Patents.
US4769022A
Expired / Lapsed
US
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Cleansing pad
Assignee: 3M Co
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Filing: 1986-05-02
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Granted: 1988-09-06
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Expires: 2006-05-02
Abstract
Abstract A nonwoven cleansing pad is provided. The pad comprises high-sorbency, liquid sorbent fibers capable of forming a hydrogelatinous outer surface by sorption of liquid and thermally bondable binder fibers. The cleansing pad is substantially free of supplemental lubricant and is integrally self-lubricating when wet with water.
Inventors
- 👤 Robert W. H. Chang
- 👤 Joseph P. Kronzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:09
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/04; D04H1/08; D04H1/24; A; A45; A45D; A45D40/00; A45D2200/00; A45D2200/10; A45D2200/1009; A45D2200/1018
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
55 words
A nonwoven cleansing pad comprising high-sorbancy, liquid sorbent fibers capable of forming a hydrogelatinous outer surface by sorption of liquid and thermally bondable binder fibers, said binder fibers being fused to provide said pad with strength and integrity, said cleansing pad being substantially free of supplemental lubricant and being integrally self-lubricating when wet with water.
Claim 2
Dependent Claim
55 words
A nonwoven cleansing pad comprising high-sorbancy, liquid sorbent fibers capable of forming a hydrogelatinous outer surface by sorption of liquid and thermally bondable binder fibers, said binder fibers being fused to provide said pad with strength and integrity, said cleansing pad being substantially free of supplemental lubricant and being integrally self-lubricating when wet with water.
Claim 3
Dependent Claim
20 words
The cleansing pad of claim 1 wherein said sorbent fibers comprise about 20 to 60 weight percent of said pad.
Claim 4
Dependent Claim
21 words
The cleansing pad of claim 1 wherein said sorbent fibers swell at least five times in diameter on imbibition of water.
Claim 5
Dependent Claim
27 words
The cleansing pad of claim 1 wherein said sorbent fibers have a dry diameter of about 2 to 10 denier and are 2 to 15 cm long.
Claim 6
Dependent Claim
20 words
The cleansing pad of claim 1 wherein said binder fibers comprise about 40 to 80 weight percent of said pad.
Claim 7
Dependent Claim
22 words
The cleansing pad of claim 1 wherein said binder fibers are about 1 to 50 denier and 2 to 15 cm long.
Claim 8
Dependent Claim
10 words
The cleansing pad of claim 1 further comprising abrasive fibers.
Claim 9
Dependent Claim
19 words
The cleansing pad of claim 7 wherein said abrasive fibers comprise up to 35 weight percent of said pad.
Claim 10
Dependent Claim
22 words
The cleansing pad of claim 7 wherein said abrasive fibers are about 5 to 50 denier and 2 to 15 cm long.
Claim 11
Dependent Claim
31 words
The cleansing pad of claim 7 comprising about 20 to 60 weight percent sorbent fibers, 20 to 40 weight percent binder fibers, and 20 to 40 weight percent abrasive staple fibers.
Claim 12
Dependent Claim
20 words
The cleansing pad of claim 1 wherein said pad has a static friction lubricity of less than about 20 cm.
Claim 13
Dependent Claim
20 words
The cleansing pad of claim 1 wherein said pad has a kinetic friction lubricity of less than about 150 g.
Claim 14
Dependent Claim
26 words
The cleansing pad of claim 1 wherein the weight of said pad is in the range of about 40 g/m 2 to 400 g/m 2 .
Claim 15
Dependent Claim
22 words
The cleansing pad of claim 1 wherein the thickness of said pad is in the range of about 0.1 to 3 cm.
Claim 16
Dependent Claim
30 words
A method of cleansing human skin comprising manually rubbing said skin with the cleansing pad of claim 1 to remove dirt, stale oil, perspiration, and dead cells from said skin.
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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) | 1991-09-06 | 1992-03-07 | 1992-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-06 | 1996-03-07 | 1996-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-06 | 2000-03-07 | 2000-09-06 | $7700.00 | Window Closed / Lapsed |