US4826497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous absorbent articles having enhanced deodorizing properties
Assignee: Katalistiks International Inc
•
Filing: 1987-12-04
•
Granted: 1989-05-02
•
Expires: 2007-12-04
Abstract
Abstract Fibrous absorbent articles such as disposable diapers, catamenial devices, wound dressings, bandages, incontinence pads, wipes, underwear, shoe inserts and the like, contain an effective amount of crystalline, siliceous molecular sieve having pore diameters of at least about 5.5 Angstroms and a relatively low capacity for adsorbed water, and exhibit enhanced deodorizing properties with respect to the body fluids intended to be absorbed.
Inventors
- 👤 Bonita K. Marcus
- 👤 Anthony J. Gioffre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:54
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; Y; Y10; Y10S; Y10S95/00; Y10S95/90; Y10S95/902
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
98 words
A fibrous absorbent article for absorbing body fluids comprising a fibrous material defining a structure suitable for absorbing body fluids and an effective amount to reduce odors from the body fluids of crystalline siliceous molecular sieve in which at least about 90 percent of the framework tetrahedral oxide units are SiO 2 tetrahedra, having pore diameters of at least about 5.5 Angstroms and having a capacity for adsorbed water not greater than 10 weight percent when measured using a water vapor pressure of 4.6 torr at a temperature of 25° C. and for a time of two hours.
Claim 2
Dependent Claim
98 words
A fibrous absorbent article for absorbing body fluids comprising a fibrous material defining a structure suitable for absorbing body fluids and an effective amount to reduce odors from the body fluids of crystalline siliceous molecular sieve in which at least about 90 percent of the framework tetrahedral oxide units are SiO 2 tetrahedra, having pore diameters of at least about 5.5 Angstroms and having a capacity for adsorbed water not greater than 10 weight percent when measured using a water vapor pressure of 4.6 torr at a temperature of 25° C. and for a time of two hours.
Claim 3
Dependent Claim
19 words
The fibrous absorbent article of claim 1 wherein the crystalline siliceous molecular sieve has at least been partially activated.
Claim 4
Dependent Claim
28 words
The fibrous absorbent article of claim 1 wherein the siliceous molecular sieve has a capacity for adsorbed water of not greater than 6 weight percent under Standard Conditions.
Claim 5
Dependent Claim
29 words
The fibrous absorbent article of claim 1 wherein the siliceous molecular sieve is an aluminosilicate having a framework SiO 2 /Al 2 O 2 molar ratio greater than 35.
Claim 6
Dependent Claim
25 words
The fibrous absorbent article of claim 4 wherein the aluminosilicate has a SiO 2 /Al 2 O 3 molar ratio of from 200 to 500.
Claim 7
Dependent Claim
16 words
The fibrous absorbent article of claim 1 wherein the siliceous molecular sieve comprises a silica polymorph.
Claim 8
Dependent Claim
37 words
The fibrous absorbent article of claim 1 wherein the siliceous molecular sieve comprises a mixture of a silica polymorph and an aluminosilicate having a framework SiO 2 /Al 2 O 3 ratio of from 200 to 500.
Claim 9
Dependent Claim
65 words
The fibrous absorbent article of claim 1 wherein the siliceous molecular sieve comprises a mixture of a silica polymorph and a type Y zeolite having a framework SiO 2 /Al 2 O 3 ratio of at least 35, said silica polymorph and said type Y zeolite each having a capacity for adsorbed water of not greater than 10 weight percent when measured at Standard Conditions.
Claim 10
Dependent Claim
20 words
The fibrous absorbent article of claim 8 wherein the silica polymorph comprises silicalite and the type Y zeolite is LZ-10.
Claim 11
Dependent Claim
25 words
The fibrous absorbent article of claim 1 wherein the crystalline siliceous molecular sieve contains less than 0.2 weight percent alkali metal on an anhydrous basis.
Claim 12
Dependent Claim
26 words
The fibrous absorbent article of claim 1 which comprises about 0.01 to 50 grams of said siliceous molecular sieve per 100 cubic centimeters of article volume.
Claim 13
Dependent Claim
26 words
The fibrous absorbent article of claim 1 which comprises about 0.01 to 25 grams of said siliceous molecular sieve per 100 cubic centimeters of effective area.
Claim 14
Dependent Claim
16 words
The fibrous absorbent article of claim 1 wherein the fibrous material structure is a non-woven batt.
Claim 15
Dependent Claim
18 words
The fibrous absorbent article of claim 1 wherein the siliceous molecular sieve is dispersed in the fibrous material.
Claim 16
Dependent Claim
27 words
The fibrous absorbent article of claim 1 wherein the siliceous molecular sieve is contained in a fluid permeable structure through which the siliceous molecular sieve cannot pass.
Claim 17
Dependent Claim
12 words
The fibrous absorbent article of claim 5 which is a catamenial article.
Claim 18
Dependent Claim
12 words
The fibrous absorbent article of claim 16 which is a sanitary napkin.
Claim 19
Dependent Claim
18 words
The fibrous absorbent article of claim 17 which contains about 0.01 to 10 grams of siliceous molecular sieve.
Claim 20
Dependent Claim
32 words
The fibrous absorbent article of claim 17 in which two siliceous molecular sieves are contained within a sandwich structure of two fluid permeable sheets which sheets are positioned within the sanitary napkin.
Claim 21
Dependent Claim
10 words
The fibrous absorbent article of claim 19 which contains superabsorber.
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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) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |