Patent US3970087A successfully refreshed from Google Patents.
US3970087A
Expired / Lapsed
US
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Hygienic napkin
Assignee: Colgate Palmolive Co
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Filing: 1974-12-30
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Granted: 1976-07-20
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Expires: 1994-12-30
Abstract
Abstract An hygienic napkin comprising an envelope of liquid penetrable material which is folded and secured in such a manner as to form a pouch for receiving absorbent material therein. The envelope is provided with a flap for closing the pouch and a fluid-impervious sheet is provided for preventing passage of liquids all the way through the envelope.
Inventors
- 👤 Rosa Maria Castaneda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:18
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/551; A61F13/56; A61F13/58; A61F13/505; A61F2013/5055; A61F2013/583
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
105 words
An hygienic napkin comprising an envelope of liquid penetrable non-woven, hydrophobic material or woven fabric, said envelope having opposed longitudinal and lateral edges and including a front portion, a back portion and a flap portion integral with the front portion and foldable to overlie said back portion, a sheet of liquid impervious waterproof material between said front and back portions, means securing said back portion to said front portion along a first opposed lateral edge portion, and wherein said front and back portions are bent inwardly along a second opposed lateral edge portion to form abutting hem portions and means securing said hem portions together.
Claim 2
Dependent Claim
105 words
An hygienic napkin comprising an envelope of liquid penetrable non-woven, hydrophobic material or woven fabric, said envelope having opposed longitudinal and lateral edges and including a front portion, a back portion and a flap portion integral with the front portion and foldable to overlie said back portion, a sheet of liquid impervious waterproof material between said front and back portions, means securing said back portion to said front portion along a first opposed lateral edge portion, and wherein said front and back portions are bent inwardly along a second opposed lateral edge portion to form abutting hem portions and means securing said hem portions together.
Claim 3
Dependent Claim
16 words
An hygienic napkin according to claim 1, including a filling of absorbent material in said envelope.
Claim 4
Dependent Claim
36 words
An hygienic napkin according to claim 1, including adhesive strips coated on said back portion for securing said napkin in position on the user, and removable adhesive tabs overlying said strips for closing said flap portion.
Claim 5
Dependent Claim
19 words
An hygienic napkin according to Claim 1, including means securing said sheet to said back portion along said opening.
Claim 6
Dependent Claim
16 words
An hygienic napkin according to claim 1, wherein said envelope is of a non-woven hydrophopic material.
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) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |