Matches 151 - 200 out of 237 < 1 2 3 4 5 >
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4179530 Process for the deposition of pure semiconductor material  
In a device and process for the deposition of pure semiconductor materials, specially silicon, by thermal decomposition of gaseous compounds of said semiconductor materials on carrier bodies heated...
4170667 Process for manufacturing pure polycrystalline silicon  
A process for the production of high purity polycrystalline silicon from a mixture of silicon tetrachloride and trichlorosilane. Such a mixture can be used for the rapid deposition of...
4150168 Method and apparatus for manufacturing high-purity silicon rods  
A method of manufacturing high-purity silicon rods by subjecting a silicon compound to pyrolysis on a plurality of rod-shaped high-purity silicon carrier members which have been red-heated by...
4147814 Method of manufacturing high-purity silicon rods having a uniform sectional shape  
A method of manufacturing high-purity silicon rods having a uniform sectional shape by thermally decomposing monosilane on a plurality of rod-shaped silicon carrier members which have been...
4138509 Silicon purification process  
A process for producing semiconductor grade silicon. Metallurgical grade silicon, silicon dioxide, and silicon tetrafluoride are chemically combined at an elevated temperature to form silicon...
4132763 Process for the production of pure, silicon elemental semiconductor material  
An improved process for the production of pure, elemental semiconductor material, especially silicon, of the type wherein the semiconductor material is produced by decomposition from the gaseous...
4131659 Process for producing large-size, self-supporting plates of silicon  
Process for producing large-size, self-supporting plates of silicon deposd from the gaseous phase on a substrate body, which comprises heating a graphite substrate to deposition temperature of...
4070444 Low cost, high volume silicon purification process  
Truly amorphous silicon having a low level of undesired impurities, and therefore suitable for semiconductor applications, may be prepared by the present process. Impure silicon, for example,...
4068020 Method of depositing elemental amorphous silicon  
A smooth surfaced amorphous silicon layer useful in semiconductor technology is produced by pyrolytic deposition of elemental silicon onto a heated mandrel along with simultaneous pyrolytic...
4062714 Process for making hollow silicon bodies and bodies utilizing board-shaped members to form the basic geometric shape so made  
A process for making hollow silicon bodies by decomposition from a gaseous ompound containing silicon and depositing said silicon on heated carrier bodies, which comprises assembling in a...
4054641 Method for making vitreous silica  
Method and apparatus for making vitreous silica of high purity including producing a melt of liquid silicon in a first chamber, mixing the liquid silicon with carbon dioxide in an upper zone of a...
4027053 Method of producing polycrystalline silicon ribbon  
A method of producing a ribbon of polycrystalline silicon, which includes contacting a moving surface carrying a layer of particulate semiconductor silicon, with a gaseous silicon source, is...
3963838 Method of operating a quartz fluidized bed reactor for the production of silicon  
In order to prevent breakage of a quartz fluidized bed reactor utilized in the production of silicon, the reactor is cooled as soon as a thin layer of silicon is formed on the reactor walls and...
3956193 Conductivity of silicon nitride  
An electrically conducting artefact is produced by heating a silicon nitride artefact to a temperature high enough to decompose part of the silicon nitride to silicon but not high enough to...
3945864 Method of growing thick expitaxial layers of silicon  
Epitaxial layers of silicon, having thicknesses of at least about 25 μm, are grown on the (100) or (111) planar surfaces of silicon substrates by the vapor deposition of silicon from the reaction...
3941900 Method for producing highly pure silicon  
A method for producing highly pure silicon, or another semiconductor material, includes depositing the element from a corresponding reaction gas at the surface of several rod shaped carrier members...
3900039 Method of producing shaped semiconductor bodies  
A method of removing a graphite carrier member supporting a semiconductor body without damaging such body by disintegrating the carrier member at room temperature with the aid of a concentrated...
3647530 PRODUCTION OF SEMICONDUCTOR MATERIAL  
When producing semiconductor bodies by a process of depositing semiconductor material from a gaseous mixture on an elongated crystalline semiconductor starting filament held between two laterally...
3607067 METHOD OF PRODUCING FILAMENTARY MONOCRYSTALS  
Described is an improvement in the method of producing filamentary monocrystals by precipitation of crystal substance from a vaporous compound in a reaction vessel at elevated temperature, which...
3607054 METHOD FOR EXTENDING THE GROWTH OF VAPOR-LIQUID-SOLID GROWN CRYSTALS  
By maintaining the desired temperature gradient in the molten solvent as the crystal grows and by replenishing the solvent lost by segregation into the growing crystal, a continuous filament...
3527661 METHOD OF OBTAINING PUREST SEMICONDUCTOR MATERIAL BY ELIMINATION OF CARBON-IMPURITIES  
3519492 PROCESS FOR THE PRODUCTION OF PURE SEMICONDUCTOR MATERIALS  
3502516 METHOD FOR PRODUCING PURE SEMICONDUCTOR MATERIAL FOR ELECTRONIC PURPOSES  
3496037 SEMICONDUCTOR GROWTH ON DIELECTRIC SUBSTRATES  
3489621 METHOD OF PRODUCING HIGHLY PURE CRYSTALLINE,ESPECIALLY MONOCRYSTALLINE MATERIALS  
3447977 METHOD OF PRODUCING SEMICONDUCTOR MEMBERS  
3379584 Semiconductor wafer with at least one epitaxial layer and methods of making same  
3341360 Method of precipitating crystalline layers of highly pure, brittle materials  
3329527 Graphite heating elements and method of conditioning the heating surfaces thereof  
3286685 Process and apparatus for pyrolytic production of pure semiconductor material, preferably silicon  
3278342 Method of growing crystalline members completely within the solution melt  
3240623 Method for pyrolytic production of semiconductor material  
3232745 Producing rod-shaped semiconductor crystals  
3212922 Producing single crystal semiconducting silicon  
3160521 Method for producing monocrystalline layers of semiconductor material  
3160522 Method for producting monocrystalline semiconductor layers  
3147141 Apparatus for the manufacture of high purity elemental silicon by thermal decomposition of silane  
3140922 Methods and apparatus for treating reactive materials  
3130013 Methods of producing silicon of high purity  
3120451 Pyrolytic method for precipitating silicon semiconductor material  
3113841 Floating zone melting method for semiconductor rods  
3112997 Process for producing pure crystalline silicon by pyrolysis  
3101257 Preparation of high purity silicon by decomposition of silicon nitride powder having a graphite target buried therein  
3097069 Pyrolytic production of hyperpure silicon  
3095279 Apparatus for producing pure silicon  
3091517 Method for recovery and recycling hydrogen and silicon halides from silicon deposition reactor exhaust  
3078150 Production of semi-conductor materials  
3069244 Production of silicon  
3069241 Manufacture of high purity silicon  
3068078 Apparatus for producing hyperpure silicon for electronic purposes  
Matches 151 - 200 out of 237 < 1 2 3 4 5 >