US3856014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sanitary napkin with porous resin powder deodorant
Assignee: Meitec Fielders Inc
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Filing: 1972-12-22
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Granted: 1974-12-24
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Expires: 1992-12-22
Abstract
Abstract A sanitary napkin containing at least one layer of staple fibers having adhered thereto, as a deodorant, a porous resin powder in the form of its acid salt, the resin having been produced by the condensation of an aromatic amine, with or without a phenol, with formaldehyde. The sanitary napkin containing the layer is particularly effective in deodorizing a malodorous liquid.
Inventors
- 👤 A Yamauchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:24
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/84; A61F13/8405; A61F13/51; A61F13/514; A61F13/51474; A61F13/51478; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/26; A61F13/53; A61F13/534; A61F13/51401; A61F2013/51441; A61F2013/51443; A61F2013/53445
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
50 words
IN A SANITARY NAPKIN WHICH COMPRISES AT LEAST ONE LAYER OF STAPLE FIBERS IN THE FORM OF A PAD, THE IMPROVEMENT WHEREIN SAID PAD CONTAINS AS A DEODORANT A POROUS RESIN POWDER WHICH IS THE CONDENSATION PRODUCT OF AN AROMATIC AINE WITH FORMALDEHYDE IN THE FORM OF ITS ACID SALT.
Claim 2
Dependent Claim
50 words
IN A SANITARY NAPKIN WHICH COMPRISES AT LEAST ONE LAYER OF STAPLE FIBERS IN THE FORM OF A PAD, THE IMPROVEMENT WHEREIN SAID PAD CONTAINS AS A DEODORANT A POROUS RESIN POWDER WHICH IS THE CONDENSATION PRODUCT OF AN AROMATIC AINE WITH FORMALDEHYDE IN THE FORM OF ITS ACID SALT.
Claim 3
Dependent Claim
16 words
The sanitary napkin according to claim 1 wherein a phenol is present in the reaction system.
Claim 4
Dependent Claim
54 words
The sanitary napkin according to claim 1 wherein the condensation product is one layer made of a pulp staple fiber containing an aromatic amine selected from the group consisting of m-phenylenediamine and m-aminophenol, with or without phenol or resorcin, and formaldehyde, said reaction product being in the form of the salt of tartaric acid.
Claim 5
Dependent Claim
23 words
The sanitary napkin according to claim 3, wherein the deodorant powder is produced from m-phenylenediamine and phenol or resorcin by condensation with formaldehyde.
Claim 6
Dependent Claim
25 words
The sanitary napkin according to claim 4, wherein one mole of m-phenylenediamine, one mole of phenol or resorcin and three moles of formaldehyde are used.
Claim 7
Dependent Claim
19 words
The sanitary napkin according to claim 3, wherein the deodorant powder is produced from m-aminophenol by condensation with formaldehyde.
Claim 8
Dependent Claim
36 words
The sanitary napkin according to claim 3, wherein a pulp staple fiber is used in an amount of about 50 to 500 parts by weight with respect to one part by weight of the deodorant powder.
Claim 9
Dependent Claim
33 words
The sanitary napkin according to claim 3, wherein the amount of the pulp staple fiber is about 200 parts by weight with respect to about one part by weight of the deodorant powder.
Claim 10
Dependent Claim
35 words
The sanitary napkin according to claim 4, wherein the deodorant powder is used in an amount of about one part by weight with respect to about 10 to 20 parts by weight of diatomaceous earth.
Claim 11
Dependent Claim
29 words
The sanitary napkin according to claim 9, wherein the amount of diatomaceous earth is about 16 parts by weight to about one part by weight of the deodorant powder.
Claim 12
Dependent Claim
63 words
The sanitary napkin according to claim 1, comprising a composite of two layers of water-adsorbing paper, a layer of staple fibers, another two layers of water-adsorbing paper, another layer of staple fibers, two layers of water-repellent paper and a layer of water-proof paper which are arranged in this order, said composite being provided at both sides thereof with a layer of water-repellent paper.
Claim 13
Dependent Claim
45 words
The sanitary napkin according to claim 1 comprising one layer of staple fibers containing said deodorant, said layer being surrounded on one side with at least one layer of water-repellant paper and on the other side with at least One layer of water absorbing paper.
Claim 14
Dependent Claim
56 words
The sanitary napkin according to claim 1 comprising two layers of staple fibers containing said deodorant, said layers being separated by at least one layer of water absorbing paper and surrounded on one side with at least one layer of water-repellant paper and on the other side with at least one layer of water absorbing paper.
Claim 15
Dependent Claim
12 words
The sanitary napkin of claim 12 housed within a non-woven fabric wrapper.
Claim 16
Dependent Claim
12 words
The sanitary napkin of claim 13 housed within a non-woven fabric wrapper.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |