Class 423/447.9 - Carbonizing cellulosic material

Subclass of Class 423 - Chemistry of inorganic compounds
Definition: Processes wherein the material carbonized is natural cellulose
No. of patents: 32
Last issue date: 01/17/2012

Number	Title	Issue Date
8097231	Method and system for producing activated carbon An activated carbon producing system includes a carbonizer for carbonizing cellulose triacetate as cellulose acylate to create carbonized material. A pulverizer pulverizes the carbonized material to obtain granules. An activation device activates the granules to cre...	01/17/2012
8080227	Processes for producing carbon nanotubes and carbon nanotubes produced thereby A carbon nanotube formation process of producing carbon nanotubes includes controlled heating of plant fiber materials in an oxygen-limited atmosphere. The plant fiber materials may be heated either cyclically or by rapid heating to produce the carbon nanotubes....	12/20/2011
8038976	Method and system for producing activated carbon An activated carbon producing system includes a heating furnace for thermally decomposing multi-layer film including a polyvinyl alcohol layer and cellulose triacetate (TAC) layers formed on surfaces of the polyvinyl alcohol layer, to produce carbonized material by ...	10/18/2011
6967014	Method of obtaining a carbon fiber fabric by continuously carbonizing a cellulose fiber fabric The carbonization of cellulose fiber fabric comprises an initial stage of heat treatment up to 250° C. to 350° C., with a relatively high mean temperature rise speed of 10° C./min to 60° C./min, an intermediate stage up to 350° C. to 500° C. with a lower mean ...	11/22/2005
6803108	Carbon fiber binder pitch Carbon fiber bundles may be dispersed into substantially single mono-filaments in pitch by stirring a mixture of fibers and pitch at a temperature at which the pitch has a viscosity of about 0.1 to about 5 poise. The resulting fiber pitch binder contains about 0.5 t...	10/12/2004
6743500	Hollow carbon fiber and production method Production of hollow carbon fibers and hollow carbon particles includes baking and carbonization of polymer particles having a specified volume after deformation. A metal-deposited carbon fiber with metal deposited inside and/or outside the hollow carbon fiber is ap...	06/01/2004
6641792	Hollow carbon fiber and production method Production of hollow carbon fibers and hollow carbon particles includes baking and carbonization of polymer particles having a specified volume after deformation. A metal-deposited carbon fiber with metal deposited inside and/or outside the hollow carbon ...	11/04/2003
6576212	Process for the production of carbonized material A process of producing a carbonized material, which includes a step of treating the biomass with a microwave for a period of time sufficient to carbonize an inner region thereof but insufficient to carbonize an outer region thereof, thereby obtaining a pa...	06/10/2003
6573215	Material for bearing rolling element A porous material suitable for use in a bearing rolling element. The porous material is obtained by a process which includes mixing degreased bran derived from rice bran with a thermosetting resin before kneading, subjecting a kneaded mixture to a primary...	06/03/2003
6503655	Gas diffusion electrode and its production A thin, flat, and porous carbon gas diffusion electrode having a side in contact with a supply of gas and a side in contact with an electrolyte, comprises a pyrolysis product of a composite of an organic aerogel or xerogel and a reinforcing skeleton consi...	01/07/2003
6500401	Carbon foams and methods of making the same A method of making carbon foam is described which involves pyrolizing a mixture containing at least one pyrolizable substance and at least one unpyrolizable material and then removing the unpyrolizable material to obtain the carbon foam. Carbon foam made ...	12/31/2002
6395677	Material for bearing retainer There is provided a porous material suitable for use in a bearing retainer, having such properties as a small contraction ratio of the dimensions of a formed workpiece to those of a finished product, excellent hot oil resistance, small contraction change,...	05/28/2002
6143213	Secondary cell and the producing method thereof The present invention discloses a secondary cell. The secondary cell comprises a positive electrode, a negative electrode which is made of a carbon material, and non-aqueous electrolytic solution, wherein the secondary cell is characterized in that the ca...	11/07/2000
5925591	Process for the production of hollow carbon fiber membranes A process for manufacturing a bundle of hollow carbon membranes comprising the steps of: (a) providing a bundle of hollow cellulose fibers; (b) removing substantially all the absorbed water from the said fibers; (c) heating the fibers to a range of temper...	07/20/1999
5843393	Carbon electrode material for electrochemical cells and method of making same A method (50) of fabricating an amorphous carbon material for use as an electrode (20) in a rechargeable electrochemical cell (10) includes the steps of heating (62) a lignin material until it has fully cured, comminuting (68) the lignin material before i...	12/01/1998
5741472	Carbonaceous electrode material for secondary battery A carbonaceous electrode having improved capacities for doping and dedoping of a cell active substance, such as lithium, and suitable for a non-aqueous solvent-type secondary battery, is constituted by a carbonaceous material having a specific microtextur...	04/21/1998
5603867	Method of production for active carbon electrode for use as electrical double layer condenser and active carbon electrode obtained thereby It is the objective of the present invention to provide an active carbon electrode which is of sufficient mechanical strength to be formed into a large plate, may be suitably used as an electrical double layer condenser capable of a large current discharg...	02/18/1997
5336443	Anisotropically electroconductive adhesive composition An improvement is proposed in an anisotropically electroconductive adhesive composition comprising an insulating adhesive resin as a matrix and electroconductive carbon particles dispersed in the matrix used for electrically connecting oppositely facing e...	08/09/1994
4938942	Carbon graphite component for an electrochemical cell and method for making the component A method for making a carbon-graphite component, such as a fuel cell substrate, suited for use in an electrochemical cell includes forming a precursor sheet structure comprising a resin, fibers that are graphitizable, and an inorganic compound containing ...	07/03/1990
4861575	Method of producing carbon fibers by overwrappings tows Carbon fibers may be made by a process comprising: overwrapping a multifilament polyacrylonitrile tow with a thread of material to maintain the tow as an integral bundle, followed by stabilizing said tow by heating in an oxidizing atmosphere at a temperature b...	08/29/1989
4814145	Apparatus for carbonizing and activating fiber materials A vertical apparatus for continuously carbonizing and activating various types of fiber materials. The apparatus comprising a chamber having openings at upper and lower portions thereof, at least one port through which an activating gas is passed for acti...	03/21/1989
4759839	Process for producing pitch useful as raw material for carbon fibers A process for producing a pitch useful as a raw material for carbon fibers, which comprises (1) heat-treating at least one starting material selected from the group consisting of a heavy oil obtained by fluid catalytic cracking of a petroleum, a distillat...	07/26/1988
4728535	Method of manufacturing thin carbon products Thin carbon products are produced from cellulose material by impregnation with a carbonaceous material followed by curing and baking. The baked product may optionally be graphitized depending on end use....	03/01/1988
4723959	Non-inflammable fiber materials and process for producing the same A non-inflammable fiber material and a process for producing the same are disclosed, said process comprising the steps of: obtaining thready materials, knitted goods, or woven goods, which are composed of a mixed yarn consisting of polymetaphenylene isophthala...	02/09/1988
4699896	Manufacture of fibrous activated carbons A method of preparing a fibrous activated carbon including the steps of carbonizing and activating cellulose fibre at temperatures between 200° C. and 1000° C. in an inert atmosphere, characterized in that, prior to activation, the fibre is impregnated ...	10/13/1987
4627944	Method for producing a carbon sheet and a fuel cell separator A carbon sheet which is suitable for use as a fuel cell separator is produced by the steps of: forming a shaped body in the form of a sheet comprising cellulose fibers and a thermosetting resin which is filled between the cellulose fibers; curing the ther...	12/09/1986
4619796	Process for preparation of porous carbon plates Porous carbon plates are made by forming a sheet from a mixture comprising 65-90 weight parts of a carbon fiber-forming organic fiber and 10-35 weight parts of a pulp according to a paper-making method; impregnating the sheet with a solution of an organic...	10/28/1986
4409125	Process for producing activated fibrous carbon A process for producing activated fibrous carbon comprises carbonizing and activating vegetable fibers in the presence of at least a member selected from the group consisting of ammonium salts of inorganic acids, nitric acid and boric acid and zinc chlori...	10/11/1983
4318710	Conversion of cellulose into charcoal A process for converting wood stock or other cellulosic material into charcoal, use being made for this purpose of liquid anhydrous hydrogen chloride at ambient temperatures....	03/09/1982
4274979	Manufacture of activated carbon Activated carbon is made by pre-treating a fibrous cellulose material with a Lewis acid comprising one or more selected halides, drying and softening the treated material, suspending the material from a frame in a tensionless manner, heating the suspended...	06/23/1981
4226816	Method of manufacturing a clutch facing of the type used for automotive automatic transmissions A paper based frictional material is formed by forming a paper material of a desired size from a mixture comprising wood pulp, a lubricant and an organic fiber; soaking said paper material in a binder agent, and then drying the soaked material; and heatin...	10/07/1980
3961025	Method of carbonizing a substance comprising cellulose A method of treating municipal waste which contains cellulose comprises combining the waste with an alkali metal meta-aluminate, such as sodium aluminate, to form a carbonizing mixture and then heating the carbonizing mixture, in air, to carbonize the was...	06/01/1976

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Class 423/447.9 - Carbonizing cellulosic material