Patent US3559650A successfully refreshed from Google Patents.
US3559650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flushable moisture-retaining sanitary pad
Assignee: Individual
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Filing: 1967-12-19
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Granted: 1971-02-02
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Expires: 1987-12-19
Abstract
Abstract A disposable sanitary pad or napkin having a flush-disposable absorbent pad on the upper side and a flush-disposable backing of paper or similar material, with a thin flexible layer of liquidretarding material (such as a greasy or waxlike material) between the two, so that liquid from the pad cannot reach the backing to dissolve it, but liquid reaching the backing from its exposed side will disintegrate it so that it can be disposed of by flushing in a toilet, the thin layer being unable to remain as a film without the support of the backing material, so that it also disintegrates when the backing material disintegrates.
Inventors
- 👤 Phyllis M Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:05
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/15203; A61F13/15211; A61F13/53; A61F13/534; A61F13/537; A61F13/539; A61F13/56; A61F13/64; A61F13/514; A61F13/51401; A61F2013/51409; A61F2013/530131; A61F13/53708; A61F2013/53721; A61F2013/53908; A61F2013/5694
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
The invention according to claim 1, said impervious layer being a layer of greaselike material supported by said backing sheet.
Claim 2
Dependent Claim
58 words
The invention according to claim 1, said pad being in the form of an elongated strip, the side and end edges oF the strip being compressed to be thinner than the center portion so as to retard liquid flow from the center toward the edges and thus tend to retain moisture in the center portion of the pad.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |