US4246009A
Expired / Lapsed
US
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Smoke filter material and use thereof
Assignee: DAICEL Ltd AND GOSEIKAGAKU INSTITUTE Ltd
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Filing: 1978-07-17
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Granted: 1981-01-20
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Expires: 1998-07-17
Abstract
Abstract A smoke filter for removing injurious components from the smoke. Comprises a fiber matrix in conjunction with a water-swellable synthetic mica. The fiber matrix may be made of cellulose acetate, regenerated cellulose, or the like. The water-swellable synthetic mica is of the general formula W.sub.1/3 to 1 (X,Y).sub.2.5 to 3 (Si.sub.4 O.sub.10)F.sub.2 wherein W is Na or Li cation, and X and Y represent 6-coordinate ions, for example, Mg and Li. Suitable synthetic micas include Na-tetrasilicic mica, Na-taeniolite, Li-taeniolite, Na-hectorite, and Li-hectorite.
Inventors
- 👤 Hideo Sawada
- 👤 Motoharu Kotani
- 👤 Koji Sato
- 👤 Toichiro Izawa
- 👤 Ken-ichiro Sugimori
- 👤 Akisato Katanosaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:02
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/06; A24D3/08; A24D3/16; A24D3/166
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
76 words
A method of removing injurous components from smoke containing said components comprising passing said smoke through a filter material comprising a fiber matrix in combination with a water-swellable synthetic mica, wherein said synthetic mica is a product obtained from a synthetic mica of the formula W.sub.1/3 to 1.sup.(X,Y) 2.5 to 3(Si.sub.4 O.sub.10)F.sub.2 wherein W represents interlayer ions and is Na- or Li-cations and X and Y represent 6 coordinate ions; by substitution of the interlayer ions.
Claim 2
Independent Claim
76 words
A method of removing injurous components from smoke containing said components comprising passing said smoke through a filter material comprising a fiber matrix in combination with a water-swellable synthetic mica, wherein said synthetic mica is a product obtained from a synthetic mica of the formula W.sub.1/3 to 1.sup.(X,Y) 2.5 to 3(Si.sub.4 O.sub.10)F.sub.2 wherein W represents interlayer ions and is Na- or Li-cations and X and Y represent 6 coordinate ions; by substitution of the interlayer ions.
Claim 3
Dependent Claim
42 words
The method of claim 1 wherein said interlayer ions are substituted by cations selected from the group consisting of (H 3 O)+, K+, NH 4 +, Ca++, Mg++, Sr++, Ba++, Cu++, Fe+++, Bi+++, Ti++++, Zr++++, Al+++, and hydroxy-formed cations of metal hydroxide.
Claim 4
Dependent Claim
23 words
The method of claim 1 wherein said synthetic mica H+-hectorite, H 2 O+-hectorite, Al 3+ hectorite, Al 2 (OH) 5 H 2 O+-hectorite.
Claim 5
Dependent Claim
16 words
The method of claim 1 wherein synthetic mica has a size of 4 to 100 mesh.
Claim 6
Dependent Claim
15 words
The method of claim 1 wherein said synthetic mica is dispersed in said fiber matrix.
Claim 7
Dependent Claim
30 words
The method of claim 1 wherein at least one layer of said synthetic mica and at least one layer of said fiber matrix are in surface contact with one another.
Claim 8
Dependent Claim
17 words
The method of claim 1 wherein X is the Mg ion and Y is the Li ion.
Claim 9
Dependent Claim
27 words
The method of claim 1 wherein said synthetic mica is present in an amount of from about 10 to 200 percent by weight of said fiber matrix.
Claim 10
Dependent Claim
27 words
The method of claim 13 wherein said synthetic mica is present in an amount of from about 10 to 100 percent by weight of said fiber matrix.
Claim 11
Dependent Claim
67 words
A smoke filter material for removing injurous components from smoke comprising a fiber matrix in combination with a water-swellable synthetic mica, wherein said synthetic mica is a product obtained from a synthetic mica of the formula W.sub.1/3 to 1.sup.(X,Y) 2.5 to 3(Si.sub.4 O.sub.10)F.sub.2 wherein W represent the interlayer ions and is Na- or Li-cations, and X and Y represent 6-coordinate ion; by substitution of the interlayer ions.
Claim 12
Dependent Claim
67 words
A smoke filter material for removing injurous components from smoke comprising a fiber matrix in combination with a water-swellable synthetic mica, wherein said synthetic mica is a product obtained from a synthetic mica of the formula W.sub.1/3 to 1.sup.(X,Y) 2.5 to 3(Si.sub.4 O.sub.10)F.sub.2 wherein W represent the interlayer ions and is Na- or Li-cations, and X and Y represent 6-coordinate ion; by substitution of the interlayer ions.
Claim 13
Dependent Claim
18 words
The filter material of claim 10 wherein said synthetic mica has a size of 4 to 100 mesh.
Claim 14
Dependent Claim
16 words
The filter material of claim 10 wherein said synthetic mica is dispersed in said fiber matrix.
Claim 15
Dependent Claim
31 words
The filter material of claim 10 wherein at least one layer of said synthetic mica and at least one layer of said fiber matrix are in surface contact with one another.
Claim 16
Dependent Claim
18 words
The filter material of claim 10 wherein X is the Mg ion and Y is the Li ion.
Claim 17
Dependent Claim
44 words
The smoke filter material of claim 1 wherein said interlayer ions are substituted by cation selected from the group consisting of (H 3 O)+, K+, NH 4 +, Ca++, Mg++, Sr++, Ba++, Cu++, Fe+++, Bi+++, Ti++++, Zr++++, Al+++, and hydroxy-formed cation of metal hydroxide.
Claim 18
Dependent Claim
25 words
The filter material of claim 10 wherein said synthetic mica is H+-hectorite H 2 O+-hectorite, Al 3+ -hectorite, Al 2 (OH) 5 H 2 O+-hectorite.
Claim 19
Dependent Claim
28 words
The filter material of claim 10 wherein said synthetic mica is present in an amount of from about 10 to 200 percent by weight of said fiber matrix.
Claim 20
Dependent Claim
28 words
The filter material of claim 4 wherein said synthetic mica is present in an amount of from about 10 to 100 percent by weight of said fiber matrix.
References Cited (Backward Citations)
US3001571A
Cited
US3019127A
Cited
US2978064A
Cited
US3428054A
Cited
US3925248A
Cited
US3936383A
Cited
US4067819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-20 | 1984-07-21 | 1985-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-20 | 1988-07-21 | 1989-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-20 | 1992-07-21 | 1993-01-20 | $7700.00 | Window Closed / Lapsed |