US5043310A
Expired / Lapsed
US
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Moldable compositions of activated carbon and molded articles produced therefrom
Assignee: Japan Enviro Chemicals Ltd
•
Filing: 1990-01-19
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Granted: 1991-08-27
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Expires: 2010-01-19
Abstract
Abstract A moldable composition is disclosed which comprises activated carbon and a polysaccharide of natural origin in an amount of 0.1-10 parts by weight in relation to 100 parts by weight of the activated carbon. There is further disclosed a process of producing molded articles of activated carbon using the composition.
Inventors
- 👤 Tatsuro Takeuchi
- 👤 Masaaki Kameno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:52
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/28; B01J20/28014; B01J20/28042; B01J20/28045; B01J20/02; B01J20/20; B01J20/28033; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
45 words
A plastic and moldable composition which comprises activated carbon and a polysaccharide of natural origin in an amount of 0.1-10 parts by weight in relation to 100 parts by weight of the activated carbon, and water in an amount effective to render the composition kneadable.
Claim 2
Dependent Claim
45 words
A plastic and moldable composition which comprises activated carbon and a polysaccharide of natural origin in an amount of 0.1-10 parts by weight in relation to 100 parts by weight of the activated carbon, and water in an amount effective to render the composition kneadable.
Claim 3
Dependent Claim
16 words
The composition as claimed in claim 1 wherein the polysaccharide of natural origin is a glucan.
Claim 4
Dependent Claim
13 words
The composition as claimed in claim 2 wherein the glucan is a β-1,3-glucan.
Claim 5
Dependent Claim
12 words
The composition as claimed in claim 3 wherein the β-1,3-glucan is curdlan.
Claim 6
Dependent Claim
12 words
The composition as claimed in claim 3 wherein the β-1,3-glucan is paramylon.
Claim 7
Dependent Claim
12 words
The composition as claimed in claim 2 wherein the glucan is pullulan.
Claim 8
Dependent Claim
14 words
The composition as claimed in claim 1 which further contains a second mold assistant.
Claim 9
Dependent Claim
15 words
The composition as claimed in claim 7 wherein the second molding assistant is methyl cellulose.
Claim 10
Dependent Claim
47 words
A process of producing molded articles of activated carbon which comprises preparing a composition comprising activated carbon and a polysaccharide of natural origin in amounts of 0.1-10 parts by weight in relation to 100 parts by weight of the activated carbon, and molding and drying the composition.
Claim 11
Dependent Claim
47 words
A process of producing molded articles of activated carbon which comprises preparing a composition comprising activated carbon and a polysaccharide of natural origin in amounts of 0.1-10 parts by weight in relation to 100 parts by weight of the activated carbon, and molding and drying the composition.
Claim 12
Dependent Claim
16 words
The process as claimed in claim 9 wherein the polysaccharide of natural origin is a glucan.
Claim 13
Dependent Claim
13 words
The process as claimed in claim 9 wherein the glucan is a β-1,3-glucan.
Claim 14
Dependent Claim
12 words
The process as claimed in claim 11 wherein the β-1,3-glucan is curdlan.
Claim 15
Dependent Claim
12 words
The process as claimed in claim 11 wherein the β-1,3-glucan is paramylon.
Claim 16
Dependent Claim
12 words
The process as claimed in claim 10 wherein the glucan is pullulan.
Claim 17
Dependent Claim
16 words
The process as claimed in claim 9 wherein the composition further contains a second molding assistant.
Claim 18
Dependent Claim
15 words
The process as claimed in claim 15 wherein the second molding assistant is methyl cellulose.
Claim 19
Dependent Claim
15 words
The process as claimed in claim 9 wherein the molded article is a honeycomb structure.
Claim 20
Dependent Claim
45 words
A molded article of activated carbon produced by preparing a composition comprising activated carbon and a polysaccharide of natural origin in an amount of 0.1-10 parts by weight in relation to 100 parts by weight of the activated carbon, and molding and drying the composition.
Claim 21
Dependent Claim
45 words
A molded article of activated carbon produced by preparing a composition comprising activated carbon and a polysaccharide of natural origin in an amount of 0.1-10 parts by weight in relation to 100 parts by weight of the activated carbon, and molding and drying the composition.
Claim 22
Dependent Claim
17 words
The molded article as claimed in claim 18 wherein the polysaccharide of natural origin is a glucan.
Claim 23
Dependent Claim
14 words
The molded article as claimed in claim 19 wherein the glucan is a β-1,3-glucan.
Claim 24
Dependent Claim
13 words
The molded article as claimed in claim 20 wherein the β-1,3-glucan is curdlan.
Claim 25
Dependent Claim
13 words
The molded article as claimed in claim 20 wherein the β-1,3-glucan is paramylon.
Claim 26
Dependent Claim
13 words
The molded article as claimed in claim 19 wherein the glucan is pullulan.
Claim 27
Dependent Claim
17 words
The molded article as claimed in claim 18 wherein the composition further contains a second molding assistant.
Claim 28
Dependent Claim
16 words
The molded article as claimed in claim 24 wherein the second molding assistant is methyl cellulose.
Claim 29
Dependent Claim
16 words
The molded article as claimed in claim 18 wherein the molded article is a honeycomb structure.
References Cited (Backward Citations)
US4242226A
Cited
US4818293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-26 | 1995-02-25 | 1995-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-26 | 1999-02-25 | 1999-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-26 | 2003-02-25 | 2003-08-27 | $7700.00 | Window Closed / Lapsed |