US5078710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface material for sanitary articles
Assignee: Kao Corp
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Filing: 1990-03-16
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Granted: 1992-01-07
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Expires: 2010-03-16
Abstract
Abstract A sanitary article comprises an absorbent and a sheet of a surface material to envelop the absorbent, the sheet comprising an opaque, hydrophobic film, having recesses in its land portion, the recesses being formed to have a bottom and side walls, the side walls having a slanting part, the slanting part being provided therein with an opening so that the slanting part having the opening may not be covered with the land portion.
Inventors
- 👤 Yasunori Suda
- 👤 Takatoshi Kobayashi
- 👤 Akira Yamanoi
- 👤 Tamio Yasuno
- 👤 Daisuke Shiba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:55
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/512; A61F13/51104; A61F13/513; A61F13/51305; A61L; A61L15/00; A61L15/16; A61L15/42; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23921; Y10T428/24; Y10T428/24273; Y10T428/24322
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
134 words
A sanitary article comprising: an absorbent; and a sheet of surface material enveloping said absorbent, said sheet including an opaque, hydrophobic film, said film having an inner surface and an outer surface, said inner surface being disposed in a facing relationship toward said absorbent, and a layer of fibrous aggregates, said layer enveloping said film and having a first surface and a second surface, said first surface being affixed to said outer surface, said sheet further including a top section having recess portions extending toward said absorbent, each said recess portion having a bottom section and a wall section, said wall section linking said top section and said bottom section and having at least one wall portion inclined to said top section, each said inclined wall portion being provided with at least one opening.
Claim 2
Dependent Claim
134 words
A sanitary article comprising: an absorbent; and a sheet of surface material enveloping said absorbent, said sheet including an opaque, hydrophobic film, said film having an inner surface and an outer surface, said inner surface being disposed in a facing relationship toward said absorbent, and a layer of fibrous aggregates, said layer enveloping said film and having a first surface and a second surface, said first surface being affixed to said outer surface, said sheet further including a top section having recess portions extending toward said absorbent, each said recess portion having a bottom section and a wall section, said wall section linking said top section and said bottom section and having at least one wall portion inclined to said top section, each said inclined wall portion being provided with at least one opening.
Claim 3
Dependent Claim
33 words
The sanitary article as claimed in claim 1, wherein an angle formed between said top section and said inclined portion is in the range of from 20° to less than the right angle.
Claim 4
Dependent Claim
37 words
The sanitary article as claimed in claim 1, wherein said sheet of surface material has an extent of deformation at the thickness direction of 40 percent or greater at a pressure of 50 grams per square cm.
Claim 5
Dependent Claim
41 words
The sanitary article as claimed in claim 3, wherein each said opening has an area of 0.02 to 30 square mm and the number of openings ranges from 1 to 100 per one square cm of said sheet of surface material.
Claim 6
Dependent Claim
133 words
A sanitary article comprising: an absorbent; and a sheet of surface material enveloping said absorbent, said sheet including an opaque, hydrophobic film, said film having an inner surface and an outer surface, and a layer of fibrous aggregates, said layer having a first surface and a second surface, said first surface being affixed to said inner surface, said second surface being disposed in a facing relationship toward said absorbent, said sheet further including a top section, said top section having recess portions extending toward said absorbent, each said recess portion having a bottom section and a wall section, said wall section linking said top section and said bottom section and having at least one wall portion inclined to said top section, each said inclined wall portion being provided with at least one opening.
Claim 7
Dependent Claim
133 words
A sanitary article comprising: an absorbent; and a sheet of surface material enveloping said absorbent, said sheet including an opaque, hydrophobic film, said film having an inner surface and an outer surface, and a layer of fibrous aggregates, said layer having a first surface and a second surface, said first surface being affixed to said inner surface, said second surface being disposed in a facing relationship toward said absorbent, said sheet further including a top section, said top section having recess portions extending toward said absorbent, each said recess portion having a bottom section and a wall section, said wall section linking said top section and said bottom section and having at least one wall portion inclined to said top section, each said inclined wall portion being provided with at least one opening.
Claim 8
Dependent Claim
15 words
A sanitary article as claimed in claim 5, wherein said bottom is formed upwardly convex.
Claim 9
Dependent Claim
43 words
The sanitary article as claimed in claim 5, wherein the integral structure of said sheet of surface material has a Klemm's method of water absorption value of height of the rise of water, as determined in JIS P8141, of 100 mm or lower.
Claim 10
Dependent Claim
37 words
The sanitary article as claimed in claim 5, wherein said sheet of surface material has an extent of deformation at the thickness direction of 40 percent or greater at a pressure of 50 grams per square cm.
Claim 11
Dependent Claim
41 words
The sanitary article as claimed in claim 8, wherein each said opening has an area of 0.02 to 30 square mm and the number of openings ranges from 1 to 100 per one square cm of said sheet of surface material.
Claim 12
Dependent Claim
33 words
The sanitary article as claimed in claim 5, wherein an angle formed between said top section and said inclined portion is in the range of from 20° to less than the right angle.
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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) | 1995-01-06 | 1995-07-08 | 1996-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-06 | 1999-07-08 | 2000-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-06 | 2003-07-08 | 2004-01-07 | $7700.00 | Window Closed / Lapsed |