Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 4830845 | Precursor for production of preoxidized fibers or carbon fibers An acrylic fiber having applied thereto a polyoxyalkylene aminopolysiloxane compound having a viscosity of from 5 to 500 poises at 25° C. and which is represented by formula (I) as an oiling agent: ##STR1## wherein R1, R2, R | 05/16/1989 |
| 4772455 | Filter A filter composed of a mesh structure substrate having deposited thereon and therein activated carbon fiber treated with an alkali and having a length within the range of from 5 to 1,000μ, wherein the mesh structure substrate has an average cell diameter... | 09/20/1988 |
| 4753777 | Apparatus for continuous production of carbon fibers A method for producing carbon fibers in a vertical carbonizing furnace and an apparatus for producing carbon fibers using such a method are disclosed. The furnace includes a heating chamber for carbonizing fibers, the furnace including, (i) a fiber inlet ... | 06/28/1988 |
| 4696742 | Active carbon fibers and filter adsorption unit for water purification comprising said fibers Active carbon fibers derived from acrylic fibers and having a BET specific surface area (SA) of 800 to 2,000 m2 /g, a pore volume (Vp) to (SA) ratio, i.e., (Vp)/(SA), of from 5×10-4 to 14.5×10-4, and a methylene blue ads... | 09/29/1987 |
| 4671950 | High-strength carbonaceous fiber A carbonaceous fiber having a carbon content of from 70 to 90%, a high tensile strength and a high modulus of elasticity, which is produced by a method which comprises preoxidizing an acrylic fiber in an oxidizing atmosphere at a temperature of from 10° ... | 06/09/1987 |
| 4659623 | Acrylic fibers for producing preoxidized fibers Acrylic fibers suitable for producing preoxidized fibers free from coalescence which have a fluorine-containing surface active agent or further have at least one phosphoric surface active agent selected from the group consisting of compounds represented b... | 04/21/1987 |
| 4576929 | Active carbon fibers as adsorbent for water purification Active carbon fibers derived from acrylic fibers and having a BET specific surface area (SA) of 800 to 2,000 m2 /g, a pore volume (Vp) to (SA) ratio, i.e., (Vp)/(SA), of from 5×10-4 to 14.5×10-4, and a methylene blue ads... | 03/18/1986 |
| 4543241 | Method and apparatus for continuous production of carbon fibers A method for producing carbon fibers in a vertical carbonizing furnace and an apparatus for producing carbon fibers using such a method are disclosed. The furnace includes a heating chamber for carbonizing fibers, the furnace including, (i) a fiber inlet ... | 09/24/1985 |
| 4522801 | Process for producing carbon fiber or graphite fiber High-performance carbon fiber or graphite fiber can be produced by treating the preoxidized fiber or carbon fiber strand with an aqueous solution containing at least one member of polyethylene oxide having a molecular weight greater than 100,000, methyl c... | 06/11/1985 |
| 4520623 | Activated carbon fiber spun yarn An activated carbon fiber spun yarn having excellent workability and adsorptive property is disclosed. The activated carbon fiber spun yarn comprising activated carbon fibers having a specific surface area of 500 to 1,500 m2 /g, a ductility of ... | 06/04/1985 |
| 4508851 | Fibrous activated carbon and process of producing it Fibrous activated carbon having a pH not more than 5 which is suitable for recovering halogenated hydrocarbon solvents is disclosed. The fibrous activated carbon is obtained by acid treating raw fibrous activated carbon.... | 04/02/1985 |
| 4500660 | Epoxy resin composition An epoxy resin composition having excellent adhesive and high mechanical strength is disclosed. The composition comprises: (A) a bisphenol A type epoxy resin present in an amount of at least 45 wt % of the total epoxy resin; (B) a novolak type epoxy resin pres... | 02/19/1985 |
| 4482660 | Prepreg for making a composite having high elongation and heat resistance and process for making such composite with the prepreg A prepreg for making a composite is disclosed. The prepreg comprising reinforcing fibers impregnated with a resin composition comprising (A) an epoxy resin, (B) a reaction product of an epoxy resin and a butadiene-acrylonitrile copolymer having carboxyl g... | 11/13/1984 |
| 4474906 | Carbon fiber and resin composition reinforced by the same A carbon fiber coated with 0.3 to 10 wt. % of a polyurethane resin is disclosed. Also disclosed is a carbon fiber reinforced thermoplastic resin composition consisting preferably of 3 to 60 wt. % of such carbon fiber and 97 to 40 wt. % of a thermoplastic ... | 10/02/1984 |
| 4460650 | Acrylonitrile fibers, a process for producing acrylonitrile fibers, as well as producing peroxidized fibers, fibrous active carbon or carbon fibers therefrom Acrylonitrile fibers suitable for production of preoxidized fibers, fibrous active carbon and carbon fibers, which have thereon a water-soluble basic aluminum salt of the formula: where (1) A, B and C stand for mutually different acid residues; (2) l and q are... | 07/17/1984 |
| 4443726 | Brushes and method for the production thereof A brush, for use for example as an electrical pick-up, includes a brush portion composed of a bundle of metal coated carbon fibers arranged substantially in parallel. A base portion includes a region where the metal coated fibers have been bonded by diffu... | 04/17/1984 |
| 4443507 | Heat-moldable laminate and process for molding said laminated structures A heat-moldable laminate comprising at least one thermoplastic resin layer, at least one fiber reinforced cured thermosetting resin layer, and at least one slippage layer interposed therebetween and bonding the resin layers, said slippage layer comprising... | 04/17/1984 |
| 4438738 | Rocker arm and process for producing the same A rocker arm made from a carbon-fiber reinforced resin is disclosed wherein various axes are defined with particularity such as the central axis of the hole through which the rocker shaft is inserted (Z-axis), a line parallel to the edge of the valve side... | 03/27/1984 |
| 4420512 | Emulsion type sizing agent for carbon fibers, process for its preparation, and method for using same An aqueous emulsion type sizing agent for carbon fibers is disclosed. The sizing agent contains a compound represented by the following general formula (I): ##STR1## wherein A represents (C2 H4 O)l or (C2 H... | 12/13/1983 |
| 4412937 | Method for manufacture of activated carbon fiber A method for manufacturing activated carbon fibers is disclosed. The method is comprised of the steps of: (1) causing an acrylic fiber to contain therein a treating agent selected from the group consisting of phosphorus and boron compounds in a concentrat... | 11/01/1983 |
| 4401533 | Surface-treatment of carbon fiber A method for producing carbon fibers exhibiting excellent adhesive properties to resins and having high strength and heat-oxidation resistance, comprising electrically treating high strength carbon fiber in an aqueous solution of a sulfuric acid salt unde... | 08/30/1983 |
| 4397831 | Production of carbon fibers from acrylonitrile based fibers An acrylonitrile based fiber is disclosed which is composed of copolymers comprising at least 96 mole % of acrylonitrile and 1×10-2 to 70×10-2 mole % of a vinyl component or vinyl components containing acidic groups, and containing... | 08/09/1983 |
| 4366085 | Fibrous activated carbon with metal chelate compound supported thereon, process for producing the same A fibrous activated carbon with a metal chelate compound supported thereon which is suitable for removal of toxic substances in gas. This activated carbon is obtained by attaching a solution or dispersion of the metal chelate compound onto the fibrous act... | 12/28/1982 |
| 4362646 | Process for the production of fibrous activated carbon A fibrous activated carbon having high adsorptivity and excellent mechanical properties is produced by preoxidizing an acrylonitrile-based fiber containing a specific amount of an iron compound at a specific initial heat-treatment temperature and then act... | 12/07/1982 |
| 4347279 | High performance carbon fiber, process for production thereof, and composite materials prepared therewith A carbon fiber, a process for production thereof, and composite materials prepared therewith are described, wherein the carbon fiber has a single yarn diameter of from 2 to 6 microns and showing a strand knot strength of 7 kilograms or more when formed in... | 08/31/1982 |
| 4339021 | Carbon fiber reinforced carbon friction element and method of making A friction material comprising a carbon fiber reinforced carbon with an oxidation temperature of at least 800° C. and a crystallinity index of matrix carbon of from 2.3 to 5.0, a process for the production of the same, and a friction element comprising t... | 07/13/1982 |
| 4321446 | Apparatus for production of graphite fibers A vertical heating apparatus for production of graphite fibers from preoxidized fibers or carbon fibers comprises of a tubular heating element which generates heat by high frequency induction. A heat-insulating material layer surrounds the tubular heating... | 03/23/1982 |
| 4309473 | Non-tacky strand prepreg comprising a resin composition containing a combination of (1) a thermosetting resin and (2) a high molecular weight epoxy resin and a process for forming an article from the same A strand prepreg which comprises (i) a resin composition comprising 100 parts by weight of thermosetting resin having a softening point of 60° C. or less and about 5 to 60 parts by weight of epoxy resin having a number average molecular weight of 5,000 o... | 01/05/1982 |
| 4304746 | Process for producing preoxidized fiber spun yarns A process for producing preoxidized fiber spun yarns is described comprising subjecting an acrylonitrile fiber tow to a preoxidation, applying a surface active agent, stretch cutting without crimping, crimping to form slivers, processing in a gilling step... | 12/08/1981 |
| 4285831 | Process for production of activated carbon fibers A process for producing activated carbon fibers of high adsorption capacity which comprises oxidizing an acrylonitrile based fiber, wherein the acrylonitrile based fiber is a homopolymer of acrylonitrile, a copolymer containing about 60% by weight or more... | 08/25/1981 |
| 4259397 | Brake lining material A brake pad or lining comprising a binder and a peroxidized fiber derived from an acrylic fiber said peroxidized fiber containing at least about 5 wt % bonded oxygen. The material has a relatively high coefficient of friction as well as good wear resistan... | 03/31/1981 |
| 4256607 | Process for production of activated carbon fibers A process for producing activated carbon fibers comprising subjecting an acrylonitrile based fiber to oxidation processing in an oxidizing atmosphere at a temperature of about 200° C. to about 300° C. while applying a tension to the fiber until the amou... | 03/17/1981 |
| 4231169 | Insole and method of producing the same A light insole, with a high modulus of elasticity, which has a shank comprising a fiber-reinforced resin sheet and which is produced by putting a shank element on an insole element and heating under pressure to mold the sheet and adhere the sheet to the i... | 11/04/1980 |
| 4197279 | Carbon fiber having improved thermal oxidation resistance and process for producing same An acrylic carbon fiber with excellent thermal oxidation resistance, which contains 50 ppm or more of a phosphorus component (as phosphorus) and/or a boron component (as boron) and which contains 100 ppm or more of a zinc component (as zinc) and/or a calc... | 04/08/1980 |
| 4195649 | Tobacco smoke filter A tobacco smoke filter capable of selectively removing irritating materials and unpleasant bitter components from tobacco smoke and containing as a filter element nitrogen-containing activated carbon fibers produced by oxidizing acrylonitrile polymer fibe... | 04/01/1980 |
| 4132828 | Assembly of metal-coated carbon fibers, process for production thereof, and method for use thereof An assembly, useful in producing a carbon fiber-reinforced metal, of a plurality of carbon fibers each coated with a matrix metal layer, the fibers having bonded points at the metal layers to form a two-dimensional network structure or both a two-dimensio... | 01/02/1979 |
| 4073870 | Process for producing carbon fibers A process for producing carbon fibers which comprises feeding an inert gas into a vertical furnace at about 500 to about 1,000° C. and into a transverse furnace at about 800 to about 2,000° C. connected thereto so that the inert gas flows from the trans... | 02/14/1978 |
| 4069297 | Process for producing carbon fibers A process for continuously producing carbon fibers which comprises preoxidizing polyacrylonitrile fibers containing at least about 90% by weight of acrylonitrile at a temperature of about 200° to about 300° C in an oxidizing atmosphere while allowing th... | 01/17/1978 |
