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US3794034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Odor reductant body waste pad
Assignee: Individual
•
Filing: 1973-02-27
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Granted: 1974-02-26
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Expires: 1993-02-27
Abstract
Abstract A substantial proportion or all of the total thickness of an unused single use, disposable body waste fluid absorbent pad, such as a sanitary napkin and a baby diaper, combines a water soluble, weakly acidic buffered solid composition having a pH range of 3.5 to 6.0, with a waste fluid absorbent pad. The absorbent pad of wood pulp is impregnated with a dry buffered non-hygroscopic, non-toxic, solid, acid composition having an aqueous pH range of 3.5 to 6.0. The wood pulp pad structure density can range from the macerated loose random fiber of typical density 1.5-2.5 lbs/cu. ft. of the commonly sold commercial fluffed wood pulp absorbent pad sanitary menstrual napkins, to that of a 9-10 pound weight absorbent tissue paper sheet typically embodied in the menstrual napkin of the U.S. Pat. No. 3,532,097, issued Oct. 6, 1970. The controlled acid pH of the buffered absorbent pad, when the pad is wet with body waste fluids, e.g., menstrual fluids or urine of infants, inhibits the rapid formation of free ammonia gas and volatile amine compounds from urea, uric acid, amino acids and peptones by bacterial and enzyme action, and forms nonvolatile salts of the basic compounds. The buffered pH range is not irritating to the user''s skin.
Inventors
- 👤 J Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:11
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/15203; A61F13/15211; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/46; A61F13/51; A61F13/511; A61F13/53; A61F13/534; A61F13/537; A61F13/539; A61F13/56; A61F13/64; A61F2013/530131; A61F2013/53445; A61F2013/53765; A61F2013/53782; A61F2013/53908; A61F2013/5694; A61F13/84; A61F13/8405; A61F2013/8408; A61F2013/8411; A61L2300/00; A61L2300/20; A61L2300/21; A61L2300/40; A61L2300/404
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
132 words
A single use, disposable, human body waste fluid absorbent pad combination comprising: a waste fluid absorbent pad having cellulose fibers disposed therein, and adapted in size and shape to being externally worn on the human body and to receiving excreted human body waste fluid; and, a nontoxic, nonvolatile, water soluble, weakly acidic, dry solid buffer composition selected from the solid acids and solid lithium, sodium and potassium salts of citric, tartaric glycolic, succinic, fumaric, malic acids, and phosphoric acids, said buffer composition having an aqueous pH range of 3.5 to 6.0, said buffer composition impregnantly disposed in said cellulose fibers disposed in said absorbent pad in a buffer composition concentration adapted to form salts of all the volatile chemically basic waste fluid excreta products absorbently disposed in said cellulose fibers during use.
Claim 2
Dependent Claim
142 words
A single use, disposable human body waste fluid absorbent pad combination comprising: a waste fluid absorbent pad having cellulose fibers disposed therein, and adapted in size and shape to external wear on the human body and to receiving excreted human body waste fluid; and, a nontoxic, nonvolatile, water soluble, weakly acidic, dry solid buffer composition selected from the dry, solid compositions of the acids and lithium, sodium and potassium salts of citric, tartaric, gluconic, glutaric, levulinic, glycolic, succinic, malic, fumaric and phosphoric acids, said buffer composition having an aqueous pH range of 3.5 to 6.0, said buffer composition uniformly impregnantly disposed in said cellulose fibers disposed in said pad and adapted to receive said waste fluid, the concentration of said buffer composition adapted to form non-volatile salts of all the volatile chemically basic waste fluid excreta products disposed on said pad fibers.
Claim 3
Dependent Claim
142 words
A single use, disposable human body waste fluid absorbent pad comprising: a waste fluid absorbent pad having cellulose fibers disposed therein, and adapted in size and shape to external wear on the human body and to receive human body waste fluid excreted on one face of the fiber pad; and, a nontoxic, nonvolatile, water soluble, weakly acidic, dry, solid buffer composition selected from the solid acids and lithium, sodium and potassium salts of citric, tartaric, glycolic, succinic, fumaric, malic acids, and phosphoric acids, said buffer composition having an aqueous pH range of 3.5 to 6.0, said buffer composition uniformly inpregnantly disposed in said cellulose fibers disposed in said pad and adapted to receive said waste fluid, the concentration of said buffer composition adapted to form nonvolatile salts of all the volatile chemically basic waste fluid excreta products disposed on said pad fibers.
Claim 4
Dependent Claim
103 words
A single use, disposable, human body waste fluid absorbent pad comprising: a waste fluid absorbent pad having cellulose fibers disposed therein and adapted in size and shape to being externally worn on the human body and to receiving excreted human body waste fluid; and a nontoxic, nonvolatile, water soluble, weakly acidic, dry solid buffer composition, having an aqueous pH range of 3.5 to 6.0, uniformly impregnantly disposed in said cellulose fibers disposed in said absorbent pad in a composite buffer concentration adapted to form salts of all the volatile chemicallY basic waste fluid excreta products absorbently disposed in said cellulose fibers during use.
Claim 5
Dependent Claim
32 words
In the product of claim 5, the modification wherein said waste fluid absorbent pad having cellulose fibers disposed therein is a menstrual waste fluid sanitary napkin pad adapted to external body wear.
Claim 6
Dependent Claim
32 words
In the product of claim 5, the modification wherein said waste fluid absorbent pad having cellulose fibers disposed therein is a baby diaper waste fluid absorbent pad adapted to external body wear.
Claim 7
Dependent Claim
31 words
In the product of claim 5, the modification wherein said buffered, dry solid composition is uniformly concentrated in said cellulose fibers disposed in the structure of said waste fluid absorbent pad.
Claim 8
Dependent Claim
115 words
A single use, disposable human body waste fluid absorbent pad comprising: a waste fluid absorbent pad having cellulose fibers disposed therein, and adapted in size and shape to external wear on the human body and to receive excreted human body waste fluid on one face of the fiber pad; and a nontoxic, nonvolatile, water soluble, weakly acidic, dry, solid buffer composition, having an aqueous pH range of 3.5 to 6.0, impregnantly disposed in said cellulose fibers disposed in the pad face to be worn adjacent to said human body, the concentration of said buffer composition adapted to form nonvolatile salts of all the volatile chemically basic waste fluid excreta products disposed on said pad fibers.
Claim 9
Dependent Claim
31 words
In the product of claim 9, the modification wherein said waste fluid absorbent pad having cellulose fibers disposed therein is a menstrual sanitary napkin pad and adapted to external body wear.
Claim 10
Dependent Claim
30 words
In the product of claim 9, the modification wherein said waste fluid absorbent pad having cellulose fibers disposed therein is a baby diaper absorbent pad adapted to external body wear.
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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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |