Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7864829 | Dropping model electrostatic levitation furnace A dropping model electrostatic levitation furnace which puts a charged sample in levitation state by an electric field generated between electrodes and subjects the sample to heat treatment, in which a drop tube evacuatable in vacuum is connected vertically at the l... | 01/04/2011 |
| 7202448 | Device for firing ceramic for dental prostheses A heating muffle for a muffle kiln for the production of a dental ceramic product containing titanium, which comprises a hollow unit, which is provided with at least one opening for the uptake of the ceramic product and has completely heatable inner walls, an which ... | 04/10/2007 |
| 7156979 | Thermal cracking process using tubes, pipes, and coils made of novel stainless steel matrix A thermal cracking process using tubes, pipes, and coils made of. An outermost surface covering not less than 55% of stainless steel, said surface having a thickness from 0.1 to 15 microns and being a spinel of the formula MnxCr3-xO... | 01/02/2007 |
| 7148450 | Portable blackbody furnace The present invention discloses a portable blackbody furnace comprising a metallic body, a cylindrical cavity with a tapered end in the metallic body, a shielding plate positioned at an open end of the cylindrical cavity, at least a first heaters positioned in the s... | 12/12/2006 |
| 7006552 | Resistance furnace with tubular heating element A resistance furnace has a tubular heating element with a vertically-oriented longitudinal axis. The heating element has a shell surface defined by an upper side and a lower side and surrounding a furnace chamber. The heating element is connected to at least two sup... | 02/28/2006 |
| 7003985 | Method and apparatus for removing polymeric coatings from optical fiber in a non-oxidizing environment In accordance with the invention, the polymeric coating is removed from a coated optical fiber by disposing the fiber within a non-oxidizing environment and applying sufficient heat to volatilize at least a portion of the polymeric coating. The result is that the co... | 02/28/2006 |
| 6872918 | Multiple zone autoclaves An autoclave is provided for heat treatment of a load whose position relative to the autoclave, whose cross-section and/or whose thermal characteristics may vary along the load, e.g. large panels for an airliner. The autoclave comprises a chamber for receiving the l... | 03/29/2005 |
| 6422861 | Quartz fusion furnace and method for forming quartz articles A crucible for melting a silica for fusion of said silica into a desired shape. The crucible having a main body with inner and outer surfaces comprised of a refractory material. In addition, the inner surface adjacent at least a melting zone of the furnac... | 07/23/2002 |
| 6365877 | Blackbody furnace A blackbody furnace, mainly comprising a radiation cavity, a thermally insulating layer, a heater, a housing, a temperature controller, an airflow controller and a high-pressure air source. Besides, a gas channel is provided at the bottom of the radiation... | 04/02/2002 |
| 6250799 | Thermal analyzing apparatus An integral structure is formed having a downstream opening portion of the first furnace tube joined with a second cylindrical furnace tube side face. A structure is provided by a light transmissive window provided in the opening portions at respective en... | 06/26/2001 |
| 6157667 | Method and calcining furnace for electric calcining of carbonaceous material An electric furnace and method thereof for electric calcining of carbonaceous material for the production of graphite or graphite-containing material, wherein the carbonaceous material is supplied to the top of a vertically arranged furnace having a cylin... | 12/05/2000 |
| 6083625 | Curved graphite furnace elements A graphite furnace element, such as a heat shield or heating element, comprises a plurality of bent, rigid, solid and arcuate-shaped graphite sheets that have been joined together, usually by screws or bolts. The bent graphite sheets typically have a wall... | 07/04/2000 |
| 6031207 | Sintering kiln A kiln, useful for sintering basemetal capacitors comprises an inner zone having vertically oriented gas dispersion conduits for the inlet and radial dispersion of gas and vertically oriented electrical heating elements. Each gas dispersion conduit compri... | 02/29/2000 |
| 5912080 | Shaped graphite elements fabricated from thin graphite sheets A sheet of high strength graphite material is bent into an arcuate shape, and the bent sheet is retained in that shape for use in a high temperature furnace. The bent sheet is rigid and can replace prior art machined blocks of lower strength graphite in a... | 06/15/1999 |
| 5903591 | Apparatus and process for activation of carbonaceous char or reactivation of spent carbon by electrical resistance heating An apparatus and process for the activation or reactivation of carbon in a tubular reactor that consists of two or more sequential sections, each section containing a descending column of carbon, with the inlets to introduce steam into any one or more of ... | 05/11/1999 |
| 5869810 | Impedance-heated furnace There is disclosed an impedance-heated furnace for processing a nonflowable but conveyable material at the processing temperature comprising a nonrotating shell having electrical-conducting properties, and heated to a processing temperature using electric... | 02/09/1999 |
| 5848093 | Fiber-drawing furnace for drawing down an optical-fiber preform into an optical fiber The fiber-drawing furnace includes a graphite tube positioned vertically, heated by induction, and subjected internally to an inert atmosphere, said tube internally defining a fiber-drawing chamber. In the furnace said graphite tube is a double-walled tub... | 12/08/1998 |
| 5838716 | Leak check procedure for a dry oxidation furnace tube A method of testing a dry oxidation furnace for leaks which permit the entry of moisture into the oxidizing ambient is described. Such moisture, when present in sufficient concentration, can cause a high degree of boron depletion in silicon at p-type cont... | 11/17/1998 |
| 5703901 | Calcination furnace A calcination furnace capable of variably setting calcination conditions such as a size of a calcination chamber, a temperature, a temperature distribution and flowing of gas in the calcination chamber; and the like depending on calcined intermediate prod... | 12/30/1997 |
| 5698158 | Vacuum distillation apparatus for producing ultra high purity material Ultra high purity materials, particularly metallic materials such magnesium and similarly high volatility materials, are produced by a vacuum distillation method and apparatus to increase purity by approximately five hundred times in a single step. For ex... | 12/16/1997 |
| 5579334 | Method and apparatus for reacting solid particulate reagents in an electric furnace A furnace comprises a furnace shell rotatable about a rotational axis. The furnace shell provides a furnace chamber for holding a solid particulate reagent as the furnace shell rotates. At least two electrodes are exposed to the chamber and are mounted in... | 11/26/1996 |
| 5573689 | Fluidized bed reactor for preparing metal nitride In a fluidized bed reactor for preparing a metal nitride by feeding metal powder and a non-oxidizing gas containing N2 or NH3 into a reaction tube (1) to form a fluidized bed (2) therein and heating the fluidized bed for nitriding th... | 11/12/1996 |
| 5559826 | Calcination furnace A calcination furnace capable of variably setting calcination conditions such as a size of a calcination chamber, a temperature, a temperature distribution and flowing of gas in the calcination chamber; and the like depending on calcined intermediate prod... | 09/24/1996 |
| 5555259 | Process and device for melting down of scrap A process and device for melting scrap in a direct current-driven closed shaft furnace. The scrap is fed with an annular cross-section into one end of the furnace and hot gases which flow against the falling scrap are sucked below the scrap feeding area v... | 09/10/1996 |
| 5524020 | Vacuum furnace with movable hot zone A high temperature vacuum heat treating furnace has a hot zone, including heating elements and thermal insulation, which is movable between a heating location at least partly surrounding a load space and a cooling location remote from the load space. A co... | 06/04/1996 |
| 5414927 | Furnace elements made from graphite sheets A high strength graphite material is fabricated into a sheet, the sheet is bent into a tube, and the tube is retained in that shape for use in a high temperature furnace. The retained tube is rigid and can replace prior art machined blocks of lower streng... | 05/16/1995 |
| 5406579 | Dynamic seal A method and apparatus for limiting the passage of a gas such as air through an opening, particularly an opening through which solid material passes, by providing a sealing chamber in advance of the entrance to the low pressure chamber having a large plen... | 04/11/1995 |
| 5298196 | Method and apparatus for extracting tritium and preparing radioactive waste for disposal Apparatus for heating an object such as a nuclear target bundle to release and recover hydrogen and contain the disposable residue for disposal. The apparatus comprises an inverted furnace, a sleeve/crucible assembly for holding and enclosing the bundle, ... | 03/29/1994 |
| 5287383 | Method and apparatus for producing active carbon using carbon-containing material An apparatus for producing an active carbon using a carbon-containing material inclusive of an used active carbon as a raw material wherein the carbon-containing raw material is carbonized in a carbonizing unit to produce a carbonized material having elec... | 02/15/1994 |
| 5251231 | Vacuum furnace An electrically heated vacuum furnace has a plurality of heating elements (13) distributed in an array extending within the furnace. This allows accurate control of the application of radiant heat energy from the elements (13) of the array to articles (10... | 10/05/1993 |
| 5222074 | Thermal decomposition cell A thermal decomposition cell for producing a molecular beam from a material gas, includes: a crucible maintained at a given temperature necessary for thermal decomposition of the material gas which is effused in the crucible in a given direction; and a th... | 06/22/1993 |
| 5206880 | Furnace having tubes for cracking hydrocarbons A furnace for cracking of hydrocarbons, comprising one or several tubes through which the hydrocarbons flow during intensive heating and subsequent cracking. The starting material for the process can be e.g. naphtha or propane, mixed with a small amount o... | 04/27/1993 |
| 5173921 | Apparatus and process for activation of carbon by electrical resistance heating in the presence of steam In an apparatus and process for the activation of carbon from carbon feedstocks by electrical resistance heating in the presence of steam, which comprises preheating particles of the carbon feedstock in a preheater, having the particles descend by gravity... | 12/22/1992 |
| 4804633 | Silicon-on-insulator substrates annealed in polysilicon tube A silicon-on-insulator substrate having a very low threading dislocation density is made by implanting oxygen ions into a silicon substrate while heating the substrate to form a layer of silicon dioxide buried in the silicon substrate and annealing the im... | 02/14/1989 |
| 4734127 | Process and apparatus for refining aluminum A process for refining aluminum using a segregation solidification process under a positive pressure inert gas protecting atmosphere comprising, maintaining the temperature of molten aluminum in the vessel by a plurality of electric heater sections arrang... | 03/29/1988 |
| 4601887 | Apparatus for improving the degree of graphitization of carbon black, and its use The invention relates to improving the degree of graphitization of carbon black produced by subjecting hydrocarbons which are liquid or gaseous under normal conditions to a thermal conversion reaction in the presence of oxygen or an oxygen-containing gas ... | 07/22/1986 |
| 4542513 | Heater for hot isostatic pressing apparatus A stacked type heater construction particularly suitable for large HIP apparatus, having a number of heating unit assemblies stacked one on another to provide a vertical series of independently controllable heating zones, the heater including a generally ... | 09/17/1985 |
| 4509179 | Vacuum sintering and hot isostatic pressing in the same vessel An apparatus for heating a workpiece at elevated temperatures both under vacuum and under superatmospheric pressures comprises a vacuum pressure vessel comprising a cylindrical pressure shell having an inner cylindrical sealing face near the upper edge th... | 04/02/1985 |
| 4429403 | Heating element insulating and support system An arrangement for mounting and insulating strip sheet heating elements in the heated interior of vaccum furnaces comprises a plurality of rods secured at one end to a support liner and supporting at their other ends a heating element assembly which inclu... | 01/31/1984 |
| 4423516 | Dynamic gradient furnace with controlled heat dissipation A furnace producing a precisely controlled temperature gradient within a central bore by a plurality of heating elements sandwiched between respective insulating layers with each heating element loosely thermally coupled to a thermally conductive ring ext... | 12/27/1983 |
