US5370634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable diaper
Assignee: Kao Corp
•
Filing: 1993-09-21
•
Granted: 1994-12-06
•
Expires: 2013-09-21
Abstract
Abstract In an underpants type disposable diaper comprising a liquid permeable top sheet, a liquid impermeable back sheet, an absorbent member disposed therebetween, an elastic expansible member for forming a gather each to a pair of leg portions and front and rear waist body portions formed around the absorbent member, the front and rear waist body portions being connected and fixed together at both sides to form a waist opening portion and a pair of leg opening portions, respectively, at least a part of each area formed between the waist opening portions and the pair of leg opening portions at both side portions of the waist portion is provided with a vertical split portion, respectively and connection means are provided to each of the side portions.
Inventors
- 👤 Kenji Ando
- 👤 Mitsue Ushiwata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:02
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/49; A61F13/49007; A61F13/49009; A61F13/49011; A61F13/49014; A61F13/49015; A61F13/49017; A61F13/56; A61F13/5622; A61F13/565; A61F13/58; A61F13/491; A61F13/494; A61F13/49406; A61F13/49413; A61F13/49466; A61F13/51; A61F13/511; A61F2013/49068; A61F2013/49076; A61F2013/49077; A61F2013/4948; A61F13/53; A61F2013/530007; A61F2013/530481; A61F2013/586; A61F2013/587
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
257 words
An underpants type disposable diaper comprising an integrated sheet, said integrated sheet including a liquid permeable top sheet, a liquid impermeable back sheet, and an absorbent member having a periphery, said absorbent member being disposed between said top sheet and said back sheet, said integrated sheet having a front waist body portion and a rear waist body portion and first and second side portions, each of said side portions having a concave section, said front waist body portion and said rear waist body portion each having a first waist flap and a second waist flap, each of said first waist flaps and said second waist flaps having a first portion and a second portion, each said first portion of said first waist flaps being fixedly interjoined by a manually tearable pre-connected portion to form a first joint and each said first portion of said second waist flaps being fixedly interjoined by a manually tearable pre-connected portion to form a second joint such that a pair of leg opening portions and a waist opening portion are formed, each of said first and second joints being separable by tearing along a longitudinal axis thereof, respectively, a plurality of elastic expansible members for forming a gather adjacent to the periphery of said absorbent member at each of said leg opening portions, one of each said second portion of said first and second waist flaps containing first and second connection means, respectively, for removably connecting each of said first waist flaps together and each of said second waist flaps together, respectively.
Claim 2
Dependent Claim
257 words
An underpants type disposable diaper comprising an integrated sheet, said integrated sheet including a liquid permeable top sheet, a liquid impermeable back sheet, and an absorbent member having a periphery, said absorbent member being disposed between said top sheet and said back sheet, said integrated sheet having a front waist body portion and a rear waist body portion and first and second side portions, each of said side portions having a concave section, said front waist body portion and said rear waist body portion each having a first waist flap and a second waist flap, each of said first waist flaps and said second waist flaps having a first portion and a second portion, each said first portion of said first waist flaps being fixedly interjoined by a manually tearable pre-connected portion to form a first joint and each said first portion of said second waist flaps being fixedly interjoined by a manually tearable pre-connected portion to form a second joint such that a pair of leg opening portions and a waist opening portion are formed, each of said first and second joints being separable by tearing along a longitudinal axis thereof, respectively, a plurality of elastic expansible members for forming a gather adjacent to the periphery of said absorbent member at each of said leg opening portions, one of each said second portion of said first and second waist flaps containing first and second connection means, respectively, for removably connecting each of said first waist flaps together and each of said second waist flaps together, respectively.
Claim 3
Dependent Claim
41 words
The disposable diaper as claimed in claim 1, wherein said plurality of elastic expansible members include a pair of leg opening elastic expansible members, one of said pair of leg opening elastic expansible members being disposed adjacent each said concave section.
Claim 4
Dependent Claim
41 words
The disposable diaper as claimed in claim 1, wherein said first and second connection means are disposed adjacent said waist opening portion on said second portions of said first waist flaps and said second portions of said second waist flaps, respectively.
Claim 5
Dependent Claim
37 words
The disposable diaper as claimed in claim 1, wherein each of said first portions of said first waist flaps and of said second waist flaps are adjacent to one of said pair of leg opening portions, respectively.
Claim 6
Dependent Claim
32 words
The disposable diaper as claimed in claim 1, wherein each of said first portions of said first waist flaps and of said second waist flaps are adjacent to said waist opening portion.
Claim 7
Dependent Claim
252 words
A disposable diaper comprising an integrated sheet, said integrated sheet including a liquid permeable top sheet, a liquid impermeable back sheet, and an absorbent member, said absorbent member being disposed between said top sheet and said back sheet, said integrated sheet having a front waist body portion, a rear waist body portion and first and second side portions, each of said side portions having a concave section, said front waist body portion having a first front waist flap and a second front waist flap, and said rear waist body portion having a first rear waist flap and a second rear waist flap, each of said waist flaps being split apart into a first element and a second element, said second elements of said first front waist flap and of said first rear waist flap being interjoined by a manually tearable pre-connected portion to form a first joint and said second elements of said second front waist flap and of said second rear waist flap being interjoined by a manually tearable pre-connected portion to form a second joint such that a pair of leg opening portions and a waist opening portion are formed, each of said first and second joints being separable by tearing along a longitudinal axis thereof, respectively, and first and second fastener means for removably fastening said first elements of said first front waist flap and said first rear waist flap together, and said first elements of said second front waist flap and said second rear waist flap together, respectively.
Claim 8
Dependent Claim
252 words
A disposable diaper comprising an integrated sheet, said integrated sheet including a liquid permeable top sheet, a liquid impermeable back sheet, and an absorbent member, said absorbent member being disposed between said top sheet and said back sheet, said integrated sheet having a front waist body portion, a rear waist body portion and first and second side portions, each of said side portions having a concave section, said front waist body portion having a first front waist flap and a second front waist flap, and said rear waist body portion having a first rear waist flap and a second rear waist flap, each of said waist flaps being split apart into a first element and a second element, said second elements of said first front waist flap and of said first rear waist flap being interjoined by a manually tearable pre-connected portion to form a first joint and said second elements of said second front waist flap and of said second rear waist flap being interjoined by a manually tearable pre-connected portion to form a second joint such that a pair of leg opening portions and a waist opening portion are formed, each of said first and second joints being separable by tearing along a longitudinal axis thereof, respectively, and first and second fastener means for removably fastening said first elements of said first front waist flap and said first rear waist flap together, and said first elements of said second front waist flap and said second rear waist flap together, respectively.
Claim 9
Dependent Claim
17 words
The disposable diaper as claimed in claim 6, wherein each said first element includes an expansible portion.
Claim 10
Dependent Claim
20 words
The disposable diaper as claimed in claim 6, wherein each of said first and second elements include an expansible portion.
Claim 11
Dependent Claim
18 words
The disposable diaper as claimed in claim 6, wherein each of said fastener means includes an expansible portion.
Claim 12
Dependent Claim
42 words
The disposable diaper as claimed in claim 6, wherein each of said first front waist flap, said second front waist flap, said first rear waist flap and said second rear waist flap includes an elastic expansible member adapted to form a gather.
Claim 13
Dependent Claim
146 words
A pull-on type disposable diaper comprising: an integrated sheet including a liquid permeable top sheet, a liquid impermeable back sheet, and an absorbent member disposed between said top sheet and said back sheet; a front waist body portion, a rear waist body portion, and first and second side portions provided on said integrated sheet, each of said side portions having a concave section defining leg openings of said diaper; a first longitudinally manually tearable pre-connected portion connecting each of said side portions of said integrated sheet together; and a second selectively fastenable portion at each of said side portions of said integrated sheet; wherein said pull-on type disposable diaper is applied to a wearer in a pull on manner followed by fastening of said second selectively fastenable portion and removed from a wearer by releasing said second selectively fastenable portion and longitudinally tearing said pre-connected portion.
Claim 14
Dependent Claim
146 words
A pull-on type disposable diaper comprising: an integrated sheet including a liquid permeable top sheet, a liquid impermeable back sheet, and an absorbent member disposed between said top sheet and said back sheet; a front waist body portion, a rear waist body portion, and first and second side portions provided on said integrated sheet, each of said side portions having a concave section defining leg openings of said diaper; a first longitudinally manually tearable pre-connected portion connecting each of said side portions of said integrated sheet together; and a second selectively fastenable portion at each of said side portions of said integrated sheet; wherein said pull-on type disposable diaper is applied to a wearer in a pull on manner followed by fastening of said second selectively fastenable portion and removed from a wearer by releasing said second selectively fastenable portion and longitudinally tearing said pre-connected portion.
Claim 15
Dependent Claim
40 words
The pull-on type disposable diaper as claimed in claim 11, wherein said leg openings include a pair of leg opening elastic expansible members, one of said pair of leg opening elastic expansible members being disposed adjacent each said concave section.
Claim 16
Dependent Claim
34 words
The pull-on type disposable diaper as claimed in claim 11, wherein each of said front waist body portion and said rear waist body portion include an elastic expansible member adapted to form a gather.
Claim 17
Dependent Claim
33 words
The pull-on type disposable diaper as claimed in claim 11, wherein said tearable preconnected portion is positioned adjacent an upper edge of said pull-on diaper and coextensively with said second selectively fastenable portion.
Claim 18
Dependent Claim
47 words
The pull-on type disposable diaper as claimed in claim 11, further including a slit portion formed at each of said first and second side portions from said leg openings to a height not greater than an upper edge of each of said first and second side portions.
Claim 19
Dependent Claim
26 words
The pull-on type disposable diaper as claimed in claim 11, wherein said first longitudinally tearable preconnected portions are laterally split from said second selectively fastenable portions.
Claim 20
Dependent Claim
24 words
The pull-on type disposable diaper as claimed in claim 11, wherein said first and second side portions are formed of an elastically expansible material.
Claim 21
Dependent Claim
29 words
The pull-on type disposable diaper as claimed in claim 11, wherein said tearable preconnected portion extends at least one-half a height of the side portion of the integrated sheet.
Claim 22
Dependent Claim
22 words
The pull-in type disposable diaper as claimed in claim 18, wherein said selectively fastenable portion is positioned above said tearable preconnected portion.
References Cited (Backward Citations)
US1695109A
Cited
US2102359A
Cited
US2055973A
Cited
US2322170A
Cited
US3800796A
Cited
US3860003B1
Cited
US3860003A
Cited
US3860003B2
Cited
US4205679A
Cited
US4639949A
Cited
US4850992A
Cited
US4850988A
Cited
US4940464A
Cited
US5074854A
Cited
US5236430A
Cited
US5246433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-12-05 | 1998-06-06 | 1998-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-05 | 2002-06-06 | 2002-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-05 | 2006-06-06 | 2006-12-06 | $7700.00 | Window Closed / Lapsed |