Patent US5614096A successfully refreshed from Google Patents.
US5614096A
Expired / Lapsed
US
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Compressed adsorbent filter cake
Assignee: Kimberly Clark Corp
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Filing: 1995-05-24
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Granted: 1997-03-25
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Expires: 2015-05-24
Abstract
Abstract A compressed adsorbent filter cake for removing caffeine from liquids. The filter cake is composed of a compressed matrix of fibrous material; and adsorbent particulate material integrated within the compressed matrix of fibrous material, so that passage of a liquid having a caffeine concentration ranging from about 20 to about 100 mg per 100 mL of liquid through the matrix for a contact time of less than about 2 minutes results in at least a 40 percent reduction in the caffeine concentration of the liquid. The compressed matrix of fibrous material may a compressed wet-laid fibrous mat. The adsorbent material may be selected from clay minerals and zeolites. Generally speaking, the filter can be adapted to provide at least a 40 percent reduction in the caffeine concentration for about 1 cup to about 40 cups of a liquid.
Inventors
- 👤 Bernard Cohen
- 👤 Lee K. Jameson
- 👤 Gerald L. Kochanny, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:34
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/28; B01J20/28014; B01J20/28028; A; A23; A23F; A23F5/00; A23F5/20; A23F5/22; A23F5/223; B01J20/28033
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
109 words
A compressed caffeine adsorbent filter cake, the filter cake comprising: a compressed matrix of fibrous material; and caffeine adsorbent particulate material integrated within the compressed matrix of fibrous material, said filter cake having a thickness of from about 0.3 cm to about 5 cm and a density of from about 0.1 grams/cm 3 to about 0.2 grams/cm 3 such that the filter cake is adapted to provide at least a 40 percent reduction in a the caffeine concentration of a liquid having an initial caffeine concentration ranging from about 20 to about 100 mg per 100 mL in contact with the filter cake for less than about 2 minutes.
Claim 2
Dependent Claim
109 words
A compressed caffeine adsorbent filter cake, the filter cake comprising: a compressed matrix of fibrous material; and caffeine adsorbent particulate material integrated within the compressed matrix of fibrous material, said filter cake having a thickness of from about 0.3 cm to about 5 cm and a density of from about 0.1 grams/cm 3 to about 0.2 grams/cm 3 such that the filter cake is adapted to provide at least a 40 percent reduction in a the caffeine concentration of a liquid having an initial caffeine concentration ranging from about 20 to about 100 mg per 100 mL in contact with the filter cake for less than about 2 minutes.
Claim 3
Dependent Claim
35 words
The adsorbent filter cake of claim 1, wherein the filter is adapted to provide at least a 40 percent reduction in the caffeine concentration for about 1 cup to about 40 cups of the liquid.
Claim 4
Dependent Claim
35 words
The adsorbent filter cake of claim 1, wherein the filter is adapted to provide at least a 40 percent reduction in the caffeine concentration for about 1 cup to about 20 cups of the liquid.
Claim 5
Dependent Claim
35 words
The adsorbent filter cake of claim 1, wherein the filter is adapted to provide at least a 40 percent reduction in the caffeine concentration for about 1 cup to about 12 cups of the liquid.
Claim 6
Dependent Claim
17 words
The adsorbent filter cake of claim 1, wherein the liquid is selected from coffee, tea, and cola.
Claim 7
Dependent Claim
22 words
The adsorbent filter cake of claim 1, wherein the compressed matrix of fibrous material is a compressed wet-laid mat of fibrous material.
Claim 8
Dependent Claim
21 words
The adsorbent filter cake of claim 6, wherein the fibrous material is a selected from synthetic fibers, natural fibers and pulp.
Claim 9
Dependent Claim
18 words
The adsorbent filter cake of claim 1, wherein the adsorbent material is selected from clay minerals and zeolites.
Claim 10
Dependent Claim
17 words
The adsorbent filter cake of claim 8, wherein the clay minerals are selected from smectite clay minerals.
Claim 11
Dependent Claim
15 words
The adsorbent filter cake of claim 9, wherein the smectite clay minerals are bentonite clays.
Claim 12
Dependent Claim
18 words
The adsorbent filter cake of claim 1, wherein the zeolites are selected from natural zeolites and synthetic zeolites.
Claim 13
Dependent Claim
41 words
The adsorbent filter cake of claim 11, wherein the synthetic zeolites are selected from zeolitic aluminosilicates having a SiO 2 /Al 2 O 3 molar ratio of from 4.5 to 35 and the essential X-ray powder diffraction pattern of zeolite Y.
Claim 14
Dependent Claim
22 words
The adsorbent filter cake of claim 1, wherein the filter contains from about 10 to about 90 percent, by weight, adsorbent material.
Claim 15
Dependent Claim
22 words
The adsorbent filter cake of claim 13, wherein the filter contains from about 20 to about 70 percent, by weight, adsorbent material.
Claim 16
Dependent Claim
22 words
The adsorbent filter cake of claim 13, wherein the filter contains from about 30 to about 60 percent, by weight, adsorbent material.
Claim 17
Dependent Claim
129 words
A compressed caffeine adsorbent filter cake, the filter cake comprising: a compressed matrix of fibrous material; and caffeine adsorbent particulate material integrated within the compressed matrix of fibrous material, the caffeine adsorbent particulate material selected from clay minerals and zeolites, said filter cake having a thickness of from about 0.3 cm to about 5 cm and a density of from about 0.1 grams/cm 3 to about 0.2 grams/cm 3 such that the filter cake is adapted to provide at least a 40 percent reduction in a the caffeine concentration of from about 1 cup to about 40 cups of a liquid having an initial caffeine concentration ranging from about 20 to about 100 mg per 100 mL in contact with the filter cake for less than about 2 minutes.
Claim 18
Dependent Claim
129 words
A compressed caffeine adsorbent filter cake, the filter cake comprising: a compressed matrix of fibrous material; and caffeine adsorbent particulate material integrated within the compressed matrix of fibrous material, the caffeine adsorbent particulate material selected from clay minerals and zeolites, said filter cake having a thickness of from about 0.3 cm to about 5 cm and a density of from about 0.1 grams/cm 3 to about 0.2 grams/cm 3 such that the filter cake is adapted to provide at least a 40 percent reduction in a the caffeine concentration of from about 1 cup to about 40 cups of a liquid having an initial caffeine concentration ranging from about 20 to about 100 mg per 100 mL in contact with the filter cake for less than about 2 minutes.
Claim 19
Dependent Claim
16 words
The adsorbent filter cake of claim 16, wherein the clay minerals are selected from bentonite clays.
Claim 20
Dependent Claim
41 words
The adsorbent filter cake of claim 16, wherein the zeolites are selected from synthetic zeolitic aluminosilicates having a SiO 2 /Al 2 O 3 molar ratio of from 4.5 to 35 and the essential X-ray powder diffraction pattern of zeolite Y.
Claim 21
Dependent Claim
22 words
The adsorbent filter cake of claim 16, wherein the filter contains from about 10 to about 90 percent, by weight, adsorbent material.
Claim 22
Dependent Claim
22 words
The adsorbent filter cake of claim 19, wherein the filter contains from about 30 to about 60 percent, by weight, adsorbent material.
Claim 23
Dependent Claim
22 words
The adsorbent filter cake of claim 16, wherein the compressed matrix of fibrous material is a compressed wet-laid mat of fibrous material.
Claim 24
Dependent Claim
139 words
A compressed caffeine adsorbent filter cake, the filter cake comprising: a compressed wet-laid mat of fibrous material; and from about 10 to about 90 percent, by weight, of a caffeine adsorbent particulate material integrated within the matrix of fibrous material, the caffeine adsorbent particulate material selected from clay minerals and zeolites, said filter cake having a thickness of from about 0.3 cm to about 5 cm and a density of from about 0.1 grams/cm 3 to about 0.2 grams/cm 3 such that the filter cake is adapted to provide at least a 40 percent reduction in the caffeine concentration of from about 1 cup to about 40 cups of a liquid having an initial caffeine concentration ranging from about 20 to about 100 mg per 100 ml in contact with the filter cake for less than about 2 minutes.
Claim 25
Dependent Claim
139 words
A compressed caffeine adsorbent filter cake, the filter cake comprising: a compressed wet-laid mat of fibrous material; and from about 10 to about 90 percent, by weight, of a caffeine adsorbent particulate material integrated within the matrix of fibrous material, the caffeine adsorbent particulate material selected from clay minerals and zeolites, said filter cake having a thickness of from about 0.3 cm to about 5 cm and a density of from about 0.1 grams/cm 3 to about 0.2 grams/cm 3 such that the filter cake is adapted to provide at least a 40 percent reduction in the caffeine concentration of from about 1 cup to about 40 cups of a liquid having an initial caffeine concentration ranging from about 20 to about 100 mg per 100 ml in contact with the filter cake for less than about 2 minutes.
Claim 26
Dependent Claim
65 words
The adsorbent filter of claim 22, wherein passage of from about 1 cup to about 40 cups of a liquid having a caffeine concentration ranging from about 20 to about 100 mg per 100 mL of liquid through the matrix for a contact time of less than about 2 minutes results in at least a 60 percent reduction in the caffeine concentration of the liquid.
Claim 27
Dependent Claim
65 words
The adsorbent filter of claim 22, wherein passage of from about 1 cup to about 40 cups of a liquid having a caffeine concentration ranging from about 20 to about 100 mg per 100 mL of liquid through the matrix for a contact time of less than about 2 minutes results in at least an 80 percent reduction in the caffeine concentration of the liquid.
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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) | 2000-03-24 | 2000-09-23 | 2001-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-24 | 2004-09-23 | 2005-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-24 | 2008-09-23 | 2009-03-25 | $7700.00 | Window Closed / Lapsed |