Patent US4235237A successfully refreshed from Google Patents.
US4235237A
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Absorbent open network structure
Assignee: Johnson and Johnson
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Filing: 1978-05-08
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Granted: 1980-11-25
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Expires: 1998-05-08
Abstract
Abstract An absorbent open network has water-insoluble but water-swellable particles spaced from one another but integral with the network to provide an absorbent structure which is useful as an element in a disposable, body fluid-absorbing article, such as a disposable diaper, sanitary napkin, or the like. Also disclosed are methods for making the absorbent open network structure, and disposable diapers incorporating such absorbent structures.
Inventors
- 👤 Frederick K. Mesek
- 👤 George A. M. Butterworth
- 👤 Talivaldis Cepuritis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:04
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/531; A61F13/532; A61F13/5323; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/60; A61F2013/530131; A61F2013/530182; A61F2013/530481; A61F2013/530489; A61F2013/530496
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
An absorbent article which consists essentially of an open network structure of fibrous elements defined by a woven scrim having a plurality of intersections, and discrete water-insoluble but water-swellable particles integral with the scrim at the intersections wherein the particles are disposed on and partially envelop the fibrous elements.
Claim 2
Dependent Claim
49 words
An absorbent article which consists essentially of an open network structure of fibrous elements defined by a woven scrim having a plurality of intersections, and discrete water-insoluble but water-swellable particles integral with the scrim at the intersections wherein the particles are disposed on and partially envelop the fibrous elements.
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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) | 1983-11-25 | 1984-05-26 | 1984-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-25 | 1988-05-26 | 1988-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-25 | 1992-05-26 | 1992-11-25 | $7700.00 | Window Closed / Lapsed |