Patent US3929135A successfully refreshed from Google Patents.
US3929135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorptive structure having tapered capillaries
Assignee: Procter and Gamble Co
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Filing: 1974-12-20
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Granted: 1975-12-30
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Expires: 1994-12-20
Abstract
Abstract Absorptive devices, such as disposable diapers, presenting a dry surface feel to the user. The surface feel is obtained when the topsheet is a liquid impervious material provided with tapered capillaries of critical diameters and tapers, each capillary having a base in the plane of the topsheet and an apex remote from the plane of the topsheet, and when each apex is in intimate contact with an absorbent pad.
Inventors
- 👤 Hugh Ansley Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:18
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/512; B; B32; B32B; B32B3/00; B32B3/26; B32B3/266; B32B3/28; A61F13/53; A61F13/534; A61F13/537; A61F2013/15008; A61F2013/15048; A61F13/513; A61F2013/51355; A61F2013/51372; A61F2013/53765; A61F2013/53782; B32B2307/00; B32B2307/70; B32B2307/726; B32B2307/7265; B32B2555/00; B32B2555/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
92 words
A disposable diaper comprising a topsheet and an absorbent element wherein said topsheet is a liquid-impermeable material provided with tapered capillaries each having a base in the plane of said topsheet and an apex remote from said plane of said topsheet, having an angle of taper of from about 10* to about 60*, base opening dimension of from about 0.006 to about 0.250 inch, and apex opening dimension of from about 0.004 to about 0.100 inch; and wherein said absorbent element is in intimate contact with said apex of said tapered capillaries.
Claim 2
Dependent Claim
92 words
A disposable diaper comprising a topsheet and an absorbent element wherein said topsheet is a liquid-impermeable material provided with tapered capillaries each having a base in the plane of said topsheet and an apex remote from said plane of said topsheet, having an angle of taper of from about 10* to about 60*, base opening dimension of from about 0.006 to about 0.250 inch, and apex opening dimension of from about 0.004 to about 0.100 inch; and wherein said absorbent element is in intimate contact with said apex of said tapered capillaries.
Claim 3
Dependent Claim
32 words
The disposable diaper of claim 1 wherein said base opening dimension is from about 0.030 to about 0.060 inch and said apex opening dimension is from about 0.005 to about 0.020 inch.
Claim 4
Dependent Claim
19 words
The disposable diaper of claim 2 wherein said tapered capillaries are in the form of frustrums of conical surfaces.
Claim 5
Dependent Claim
15 words
The disposable diaper of claim 2 which includes as an additional element a fluid-impervious backsheet.
Claim 6
Dependent Claim
15 words
The disposable diaper of claim 1 which includes as an additional element a fluid-impervious backsheet.
Claim 7
Dependent Claim
98 words
An absorptive structure for absorbing and containing fluid bodily discharges comprising a topsheet and an absorbent element wherein said topsheet is a liquid-impervious material provided with tapered capillaries having a base in the plane of said topsheet and an apex remote from said plane of said topsheet, having an angle of taper of from about 10* to about 60*, base opening dimension of from about 0.006 to about 0.250 inch, and apex opening dimension of from about 0.004 to about 0.100 inch; and wherein said absorbent element is in intimate contact with said apex of said tapered capillaries.
Claim 8
Dependent Claim
98 words
An absorptive structure for absorbing and containing fluid bodily discharges comprising a topsheet and an absorbent element wherein said topsheet is a liquid-impervious material provided with tapered capillaries having a base in the plane of said topsheet and an apex remote from said plane of said topsheet, having an angle of taper of from about 10* to about 60*, base opening dimension of from about 0.006 to about 0.250 inch, and apex opening dimension of from about 0.004 to about 0.100 inch; and wherein said absorbent element is in intimate contact with said apex of said tapered capillaries.
Claim 9
Dependent Claim
32 words
The absorptive structure of claim 6 wherein said base opening dimension is from about 0.030 to about 0.060 inch and said apex opening dimension is from about 0.005 to about 0.020 inch.
Claim 10
Dependent Claim
19 words
The absorptive structure of claim 7 wherein said tapered capillaries are in the form of frustrums of conical surfaces.
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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |