Patent US3955578A successfully refreshed from Google Patents.
US4678464A
Expired / Lapsed
US
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Absorbent structure with reservoirs and a channel
Assignee: Personal Products Co
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Filing: 1985-02-22
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Granted: 1987-07-07
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Expires: 2005-02-22
Abstract
Abstract An absorbent structure is provided which contains a loosely compacted cellulosic fibrous batt having two reservoirs and a connecting channel. The absorbent structure may be an infant diaper, an adult diaper, a sanitary napkin and incontinence pad or the like.
Inventors
- 👤 Dennis C. Holtman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:07
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/531; A61F13/532; A61F13/533; A61F13/534; A61F13/537; A61F13/53708; A61F13/45; A61F13/47; A61F13/49; A61F13/49007; A61F13/49009; A61F13/51; A61F13/511; A61F13/56; A61F13/58; A61F13/15203; A61F2013/15284; A61F2013/15357; A61F2013/15463; A61F2013/49068; A61F2013/49076; A61F13/514; A61F13/51401; A61F2013/51409; A61F2013/51441; A61F2013/51443; A61F2013/530131; A61F2013/53721; A61F2013/53765; A61F2013/582; A61F2013/583
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
187 words
An absorbent structure comprising a loosely-compacted cellulosic fibrous batt substantially rectangular in shape and having a length at least about 1.5 times the width of the batt, the width not exceeding about 5 inches, one surface of said batt containing at least 2 reservoirs spaced apart with a connecting channel, said reservoirs and the length of the channel being centered on the longitudinal axis of the batt, each reservoir (1) has a capacity of at least about 10 cc, (2) covers at least one square inch of surface, (3) is situated between the center and one transverse end of the substantially rectangular cellulosic fibrous batt, (4) covers less than about twenty-five percent (25%) of the surface area of the batt, and (5) is formed by compression of the cellulosic fibrous batt so that the depth of the reservoir is more than one-half (1/2) the thickness of the batt, the channel depth being at least one-half the depth of the reservoirs; a moisture-permeable facing covering the surface of the batt containing the reservoirs; and a moisture-impermeable backing covering at least the surface opposite the surface containing the reservoirs.
Claim 2
Dependent Claim
187 words
An absorbent structure comprising a loosely-compacted cellulosic fibrous batt substantially rectangular in shape and having a length at least about 1.5 times the width of the batt, the width not exceeding about 5 inches, one surface of said batt containing at least 2 reservoirs spaced apart with a connecting channel, said reservoirs and the length of the channel being centered on the longitudinal axis of the batt, each reservoir (1) has a capacity of at least about 10 cc, (2) covers at least one square inch of surface, (3) is situated between the center and one transverse end of the substantially rectangular cellulosic fibrous batt, (4) covers less than about twenty-five percent (25%) of the surface area of the batt, and (5) is formed by compression of the cellulosic fibrous batt so that the depth of the reservoir is more than one-half (1/2) the thickness of the batt, the channel depth being at least one-half the depth of the reservoirs; a moisture-permeable facing covering the surface of the batt containing the reservoirs; and a moisture-impermeable backing covering at least the surface opposite the surface containing the reservoirs.
Claim 3
Dependent Claim
23 words
The absorbent structure of claim 1 wherein the base of the reservoirs is a densified region of the fibers of the fibrous batt.
Claim 4
Dependent Claim
26 words
The absorbent structure of claim 1 wherein the surface of the absorbent batt opposite the surface containing the reservoirs is provided with a paper-like densified skin.
Claim 5
Dependent Claim
22 words
The absorbent structure of claim 1 wherein the backing is provided with an adhesive strip for securement of the structure when worn.
Claim 6
Dependent Claim
13 words
The absorbent structure of claim 1 in the form of a sanitary napkin.
Claim 7
Dependent Claim
13 words
The absorbent structure of claim 1 in the form of a disposable diaper.
Claim 8
Dependent Claim
13 words
The absorbent structure of claim 1 in the form of an incontinence pad.
Claim 9
Dependent Claim
168 words
An adult incontinence structure substantially rectangular in shape comprising a moisture-impermeable backing sheet; an absorbent loosely-compacted cellulosic fibrous batt superimposed on said backing sheet, and a moisture-permeable facing cover, covering at least the side of said absorbent batt opposite said backing sheet; said absorbent batt being provided with at least two reservoirs spaced apart with a connecting channel; said reservoirs and the length of the channel being centered on the longitudinal axis of the batt; each reservoir (1) has a capacity of at least about 10 cc, (2) covers at least one square inch of surface, (3) is situated between the center and one transverse end of the substantially rectangular cellulosic fibrous batt, (4) covers less than about twenty-five percent (25%) of the surface area of the batt, and (5) is formed by compression of the cellulosic fibrous batt so that the depth of the reservoir is more than one-half (1/2) the thickness of the batt, the channel depth being at least one-half the depth of the reservoirs.
Claim 10
Dependent Claim
168 words
An adult incontinence structure substantially rectangular in shape comprising a moisture-impermeable backing sheet; an absorbent loosely-compacted cellulosic fibrous batt superimposed on said backing sheet, and a moisture-permeable facing cover, covering at least the side of said absorbent batt opposite said backing sheet; said absorbent batt being provided with at least two reservoirs spaced apart with a connecting channel; said reservoirs and the length of the channel being centered on the longitudinal axis of the batt; each reservoir (1) has a capacity of at least about 10 cc, (2) covers at least one square inch of surface, (3) is situated between the center and one transverse end of the substantially rectangular cellulosic fibrous batt, (4) covers less than about twenty-five percent (25%) of the surface area of the batt, and (5) is formed by compression of the cellulosic fibrous batt so that the depth of the reservoir is more than one-half (1/2) the thickness of the batt, the channel depth being at least one-half the depth of the reservoirs.
Claim 11
Dependent Claim
30 words
The adult incontinence structure of claim 8 wherein the backing sheet is provided with an adhesive layer which functions as an adhesive strip for securement of the pad when worn.
Claim 12
Dependent Claim
161 words
A disposable diaper comprising a moisture-impermeable backing sheet; an absorbent loosely-compacted cellulosic fibrous batt superimposed on said backing sheet and a moisture-permeable facing superimposed on the side of the fibrous batt opposite said backing sheet; said absorbent batt being provided with at least two reservoirs spaced apart with a connecting channel; said reservoirs and the length of the channel being centered on the longitudinal axis of the batt; each reservoir (1) has a capacity of at least about 10 cc, (2) covers at least one square inch of surface, (3) is situated between the center and one transverse end of the substantially rectangular cellulosic fibrous batt, (4) covers less than about twenty-five percent (25%) of the surface area of the batt, and (5) is formed by compression of the cellulosic fibrous batt so that the depth of the reservoir is more than one-half (1/2) the thickness of the batt, the channel depth being at least one-half the depth of the reservoirs.
Claim 13
Dependent Claim
161 words
A disposable diaper comprising a moisture-impermeable backing sheet; an absorbent loosely-compacted cellulosic fibrous batt superimposed on said backing sheet and a moisture-permeable facing superimposed on the side of the fibrous batt opposite said backing sheet; said absorbent batt being provided with at least two reservoirs spaced apart with a connecting channel; said reservoirs and the length of the channel being centered on the longitudinal axis of the batt; each reservoir (1) has a capacity of at least about 10 cc, (2) covers at least one square inch of surface, (3) is situated between the center and one transverse end of the substantially rectangular cellulosic fibrous batt, (4) covers less than about twenty-five percent (25%) of the surface area of the batt, and (5) is formed by compression of the cellulosic fibrous batt so that the depth of the reservoir is more than one-half (1/2) the thickness of the batt, the channel depth being at least one-half the depth of the reservoirs.
Claim 14
Dependent Claim
147 words
A sanitary napkin comprising a moisture-permeable outer layer containing an absorbent loosely-compacted cellulosic fibrous batt; said absorbent batt being provided with one surface of said batt containing at least two reservoirs spaced apart with a connecting channel; said reservoirs and the length of the channel being centered on the longitudinal axis of the batt; each reservoir (1) has a capacity of at least about 10 cc, (2) covers at least one square inch of surface, (3) is situated between the center and one transverse end of the substantially rectangular cellulosic fibrous batt, (4) covers less than about twenty-five percent (25%) of the surface area of the batt, and (5) is formed by compression of the cellulosic fibrous batt so that the depth of the reservoir is more than one-half (1/2) the thickness of the batt, the channel depth being at least one-half the depth of the reservoirs.
Claim 15
Dependent Claim
147 words
A sanitary napkin comprising a moisture-permeable outer layer containing an absorbent loosely-compacted cellulosic fibrous batt; said absorbent batt being provided with one surface of said batt containing at least two reservoirs spaced apart with a connecting channel; said reservoirs and the length of the channel being centered on the longitudinal axis of the batt; each reservoir (1) has a capacity of at least about 10 cc, (2) covers at least one square inch of surface, (3) is situated between the center and one transverse end of the substantially rectangular cellulosic fibrous batt, (4) covers less than about twenty-five percent (25%) of the surface area of the batt, and (5) is formed by compression of the cellulosic fibrous batt so that the depth of the reservoir is more than one-half (1/2) the thickness of the batt, the channel depth being at least one-half the depth of the reservoirs.
Claim 16
Dependent Claim
31 words
The sanitary napkin of claim 11 wherein the side opposite the reservoirs is provided with an adhesive layer which functions as an adhesive strip for securement of the napkin when worn.
Claim 17
Dependent Claim
23 words
The sanitary napkin of claim 11 wherein the base of the reservoirs is a densified region of the fibers of the fibrous batt.
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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) | 1990-07-06 | 1991-01-05 | 1991-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-06 | 1995-01-05 | 1995-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-06 | 1999-01-05 | 1999-07-07 | $7700.00 | Window Closed / Lapsed |