Patent US4781710A successfully refreshed from Google Patents.
US4781710A
Expired / Lapsed
US
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Absorbent pad having improved liquid distribution
Assignee: Procter and Gamble Co
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Filing: 1987-05-15
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Granted: 1988-11-01
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Expires: 2007-05-15
Abstract
Abstract An absorbent pad having a densification pattern comprising relatively low density tuft regions which are separated and surrounded by channels. The channels further comprise storage regions and transport regions wherein one of said storage regions or said transport regions separate and surround the other of said storage regions or said transport regions. The transport regions have a density greater than the density of the storage regions which, in turn, have a density greater than the tuft regions.
Inventors
- 👤 Donald R. Megison
- 👤 Richard A. Vonderhaar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:12
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/531; A61F13/532; A61F13/533; A61F13/45; A61F13/47; A61F13/15203; A61F2013/15284; A61F2013/15422; A61F13/51; A61F2013/51078; A61F2013/530868; A61F2013/530927; A61F2013/530934
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
65 words
An absorbent pad, comprising: tuft regions; and channels, said channels separating and surrounding said tuft regions; said channels further comprising storage regions and transport regions, said storage regions having a density greater than the density of said tuft regions, said transport regions having a density greater than the density of said storage regions, and said transport regions being separated and surrounded by said storage regions.
Claim 2
Dependent Claim
65 words
An absorbent pad, comprising: tuft regions; and channels, said channels separating and surrounding said tuft regions; said channels further comprising storage regions and transport regions, said storage regions having a density greater than the density of said tuft regions, said transport regions having a density greater than the density of said storage regions, and said transport regions being separated and surrounded by said storage regions.
Claim 3
Dependent Claim
24 words
The absorbent pad as claimed in claim 1, wherein at least one of said transport regions is entirely surrounded solely by said storage regions.
Claim 4
Dependent Claim
65 words
An absorbent pad, comprising: tuft regions; and channels, said channels separating and surrounding said tuft regions, said channels further comprising storage regions and transport regions, said storage regions having a density greater than the density of said tuft regions, said transport regions having a density greater than the density of said storage regions, and said storage regions being separated and surrounded by said transport regions.
Claim 5
Dependent Claim
65 words
An absorbent pad, comprising: tuft regions; and channels, said channels separating and surrounding said tuft regions, said channels further comprising storage regions and transport regions, said storage regions having a density greater than the density of said tuft regions, said transport regions having a density greater than the density of said storage regions, and said storage regions being separated and surrounded by said transport regions.
Claim 6
Dependent Claim
24 words
The absorbent pad as claimed in claim 3, wherein at least one of said storage regions is entirely surrounded solely by said transport regions.
Claim 7
Dependent Claim
35 words
The absorbent pad as claimed in claim 1 or 3, further comprising a pad upper surface, a pad bottom surface and a tissue layer, wherein said tissue layer is adjacent to one of said surfaces.
Claim 8
Dependent Claim
36 words
The absorbent pad as claimed in claim 5, further comprising a pad side edge and a wicking barrier line wherein said wicking barrier line is located near to and substantially parallel to said pad side edge.
Claim 9
Dependent Claim
32 words
The absorbent pad as claimed in claims 1 or 3, wherein said tuft regions have a density of from about 0.004 grams per cubic centimeter to about 0.370 grams per cubic centimeter.
Claim 10
Dependent Claim
30 words
The absorbent pad as claimed in claim 7, wherein said storage regions have a density of from about 0.009 grams per cubic centimeter to about 0.920 grams per cubic centimeter.
Claim 11
Dependent Claim
30 words
The absorbent pad as claimed in claim 8, wherein said transport regions have a density of from about 0.001 grams per cubic centimeter to about 1000.000 grams per cubic centimeter.
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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) | 1991-11-01 | 1992-05-02 | 1992-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-01 | 1996-05-02 | 1996-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-01 | 2000-05-02 | 2000-11-01 | $7700.00 | Window Closed / Lapsed |