US4717595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molded carbonaceous material
Assignee: Murata Manufacturing Co Ltd
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Filing: 1986-11-17
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Granted: 1988-01-05
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Expires: 2006-11-17
Abstract
Abstract A molded carbonaceous material which is a molded mixture comprising a carbonaceous powder and a binder, particles of said carbonaceous powder particles being bound together by means of said binder with the surface of said carbonaceous powder being not wholly covered with said binder.
Inventors
- 👤 Koichi Watanabe
- 👤 Michinobu Maesaka
- 👤 Michihiro Murata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:23
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; H01G; H01G11/00; H01G11/22; H01G11/30; H01G11/32; H01G11/38; H01G11/84; H01G11/86; Y; Y02; Y02E; Y02E60/00; Y02E60/13; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
139 words
A process for producing a molded carbonaceous material, comprising the steps of mixing a carbonaceous powder dispersion with natural or synthetic latex dispersion selected from the group consisting of natrual rubber latex, styrene-butadiene rubber, acrylonitrilebutadiene rubber, chloroprene rubber, polyarylate, polyvinyl acetate, polyvinyl chloride emulsion, natural rubber dispersion, regenerated rubber dispersion, stereo-regular rubber lattice and solution or bulk polymerized polymer latex, stirring the dispersion mixture to attach the solid content of said latex as binder to the surface of the carbonaceous powder particles, removing the solvent portion of the stirred mixture system so as to obtain a mixture in an aggregated state, and molding the mixture in an aggregated state such that the particles of said carbonaceous powder are bound together by means of said binder with the surface of said carbonaceous powder being not wholly covered with said binder.
Claim 2
Dependent Claim
139 words
A process for producing a molded carbonaceous material, comprising the steps of mixing a carbonaceous powder dispersion with natural or synthetic latex dispersion selected from the group consisting of natrual rubber latex, styrene-butadiene rubber, acrylonitrilebutadiene rubber, chloroprene rubber, polyarylate, polyvinyl acetate, polyvinyl chloride emulsion, natural rubber dispersion, regenerated rubber dispersion, stereo-regular rubber lattice and solution or bulk polymerized polymer latex, stirring the dispersion mixture to attach the solid content of said latex as binder to the surface of the carbonaceous powder particles, removing the solvent portion of the stirred mixture system so as to obtain a mixture in an aggregated state, and molding the mixture in an aggregated state such that the particles of said carbonaceous powder are bound together by means of said binder with the surface of said carbonaceous powder being not wholly covered with said binder.
Claim 3
Dependent Claim
36 words
The process for producing a molded carbonaceous material of claim 1, wherein the mixing amounts of the carbonaceous powder and latex are 15 to 85 percent by weight and 85 to 15 percent by weight, respectively.
Claim 4
Dependent Claim
36 words
The process for producing a molded carbonaceous material of claim 2, wherein the mixing amounts of the carbonaceous powder and latex are 60 to 75 percent by weight and 40 to 25 percent by weight, respectively.
Claim 5
Dependent Claim
30 words
The process for producing a molded carbonaceous material of claim 1, wherein the mixture is molded into the form a of a polarized electrode of a electric double layer capacitor.
Claim 6
Dependent Claim
27 words
The process for producing a molded carbonaceous material of claim 1, wherein the solid content of the latex is particles of 0.03 to 5 μm in diameter.
Claim 7
Dependent Claim
20 words
The process for producing a molded carbonaceous material of claim 1, wherein the molding step is a pressure molding step.
Claim 8
Dependent Claim
18 words
The process for producing a molded carbonaceous material of claim 1, wherein the latex is a synthetic latex.
Claim 9
Dependent Claim
28 words
The process for producing a molded carbonaceous material of claim 7, wherein the synthetic latex is a styrenebutadiene rubber, acrylonitrile-butadiene rubber, chloroprene rubber, polyacrylate or polyvinyl chloride emulsion.
Claim 10
Dependent Claim
38 words
The process for producing a molded carbonaceous material of claim 7, wherein the synthetic latex is selected from the group consisting of natural rubber dispersion, regenerated rubber dispersion, stereo-regular rubber lattice and solution or bulk polymerized polymer latex.
Claim 11
Dependent Claim
18 words
The process for producing a molded carbonaceous masterial of claim 1, wherein the latex is a chlorosulfonylated polyethylene.
Claim 12
Dependent Claim
18 words
The process for producing a molded carbonaceous material of claim 1, wherein the latex is a polyvinyl acetate.
Claim 13
Dependent Claim
61 words
The process for producing a molded carbonaceous material of claim 1, wherein the mixing amounts of the carbonaceous powder and latex are 60 to 75 percent by weight and 40 to 25 percent by weight, respectively, the solid content of the lastex is pasrticles of 0.03 to 5 microns in diameter and wherein the molding step is a pressure molding step.
Claim 14
Dependent Claim
53 words
The process for producing as molded carbonaceous material of claim 12, wherein the carbonaceous powder is particles of active carbon, the latex is chlorosulfonylated polyethylene in water and wherein after removal of the solvent portion of the stirred mixture system, the mixture in an aggregated state is dried and granulated before being molded.
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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) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |