Patent US5069678A successfully refreshed from Google Patents.
US5069678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable diapers
Assignee: Unicharm Corp
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Filing: 1990-09-27
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Granted: 1991-12-03
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Expires: 2010-09-27
Abstract
Abstract Here is disclosed a disposable diaper having a front area, a crotch area, a back area and a pair of liquid permeable wing areas laterally extending from opposite sides of said back area so that said diaper may be worn by fastening said wing areas to each other, then placing said front area upon these wing areas and fastening said front area to said wing areas.
Inventors
- 👤 Masamitsu Yamamoto
- 👤 Noriyuki Kimura
- 👤 Yoshihisa Fujioka
- 👤 Hiroki Yamamoto
- 👤 Makoto Suekane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:52
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/49; A61F13/494; A61F13/49406; A61F13/4946; A61F13/49466; A61F13/56; A61F13/5622; A61F13/565; A61F13/47; A61F13/476; A61F13/49007; A61F13/49009; A61F13/49011; A61F13/491; A61F2013/49088; A61F13/51; A61F13/514; A61F13/51401; A61F2013/51409; A61F2013/51411; A61F2013/51421
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
241 words
A disposable diaper that comprises (A) a first central portion having two sides that consists of (a) a front area (2), a back area (4) and a crotch area (3) that connects said front and back areas, (b) a liquid-permeable topsheet (6) covering one side of said first central portion and which is adapted to be placed against the body of the wearer, (c) a liquid-impermeable backsheet (8) covering the other side of said first central portion and which is not adapted to be placed against the body of a wearer, and (d) a first liquid absorbent core (10) sandwiched between said topsheet (6) and said backsheet (8), (B) two spaced apart wing portions (5) (a) each wing portion extending laterally outwardly from opposite sides of the back area (4) of said first central portion, (b) each wing portion being composed of a second liquid absorbent core (11) sandwiched between two liquid permeable sheets (7, 9), (C) first fastening means (18) associated with said wing portions (5) so that when the wing portions (5) are folded toward each other they can be fastened to each other in an overlapping relationship, and (D) second fastening means (17) on said first central portion so that after said wing portions (5) have been fastened to each other in an overlapping relationship by fastening means (18) said front area (2) can be fastened to said back area (4) with the overlapped wing portions (5) therebetween.
Claim 2
Dependent Claim
241 words
A disposable diaper that comprises (A) a first central portion having two sides that consists of (a) a front area (2), a back area (4) and a crotch area (3) that connects said front and back areas, (b) a liquid-permeable topsheet (6) covering one side of said first central portion and which is adapted to be placed against the body of the wearer, (c) a liquid-impermeable backsheet (8) covering the other side of said first central portion and which is not adapted to be placed against the body of a wearer, and (d) a first liquid absorbent core (10) sandwiched between said topsheet (6) and said backsheet (8), (B) two spaced apart wing portions (5) (a) each wing portion extending laterally outwardly from opposite sides of the back area (4) of said first central portion, (b) each wing portion being composed of a second liquid absorbent core (11) sandwiched between two liquid permeable sheets (7, 9), (C) first fastening means (18) associated with said wing portions (5) so that when the wing portions (5) are folded toward each other they can be fastened to each other in an overlapping relationship, and (D) second fastening means (17) on said first central portion so that after said wing portions (5) have been fastened to each other in an overlapping relationship by fastening means (18) said front area (2) can be fastened to said back area (4) with the overlapped wing portions (5) therebetween.
Claim 3
Dependent Claim
35 words
A disposable diaper as set forth in claim 1 wherein the liquid absorption capacity per m 2 of said first liquid absorbent core (10) is greater than that of said second liquid absorption core (11).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-02 | 1995-06-03 | 1995-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-02 | 1999-06-03 | 1999-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-02 | 2003-06-03 | 2003-12-03 | $7700.00 | Window Closed / Lapsed |