Matches 251 - 300 out of 346 < 1 2 3 4 5 6 7 >


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3751539 USE OF VAPOR DEPOSITION TO FORM A HOLLOW TUBULAR BODY CLOSED ON ONE END  
3748169 METHOD AND APPARATUS FOR THE PRODUCTION OF HOLLOW MEMBERS OF ANY LENGTH OF SEMICONDUCTOR MATERIAL  
3747559 APPARATUS FOR PRODUCTION OF A CLOSED TUBE OF SEMICONDUCTOR MATERIAL  
An apparatus comprised of a housing member having an inner hollow chamber, a pair of electrically conductive mounting members electrically insulated from each other and positioned within the...
3746496 DEVICE FOR PRODUCING TUBULAR BODIES OF SEMICONDUCTOR MATERIAL, PREFERABLY SILICON OR GERMANIUM  
A device for producing tubular bodies of semiconductor material, preferably of silicon or germanium. To this end, a rod or tube shaped carrier is heated in a reaction gas for precipitating the...
3741796 SILICA DEPOSITION UTILIZING MULTIPLE TORCHES  
3715253 COMPOSITE MATERIALS  
A method for making shaped pyrolytic graphite articles which comprises progressively positioning continuous carbon strand onto a shaped form and simultaneously pyrolyzing carbonaceous gas onto the...
3708325 PROCESS FOR METAL COATING BORON NITRIDE OBJECTS  
3698936 PRODUCTION OF VERY HIGH PURITY METAL OXIDE ARTICLES  
3686378 IMPROVED SEPARATION OF THE DEPOSITION MANDREL FROM A VAPOR PHASE DEPOSITED SEMICONDUCTOR BODY  
An at least unilaterally open, hollow body of semiconductor material, such as a tubular or cup-shaped body for example, is produced by precipitating the semiconductor material from a gaseous phase...
3682759 LOW DENSITY PYROLYTIC CARBON COATING PROCESS  
3681132 METHOD OF PRODUCING A PROTECTIVE LAYER OF SIO2 ON THE SURFACE OF A SEMICONDUCTOR WAFER  
3677795 METHOD OF MAKING A PROSTHETIC DEVICE  
3673051 PYROLYTIC GRAPHITE  
Curved pyrolytic graphite bodies of increased thickness-to-radius ratios are produced by codepositing with the pyrolytic graphite a refractory metal in progressively decreasing quantities from the...
3671306 BORON CARBIDE FILM PRODUCT  
3666526 REFRACTORY POROUS BODIES  
3658954 DUPLICATING PROCESS FOR VIDEO DISC RECORDS  
3658469 CONTINUOUS PRODUCTION OF ALUMINA WHISKERS  
A method and apparatus for making single crystal alpha-alumina in the form of whiskers of width and thickness generally of 0.100-100 microns. Whiskers are grown in a continuous process within the...
3657404 METHOD AND APPARATUS FOR CLEAVING ANISOTROPIC PYROLYTICALLY DEPOSITED MATERIALS ON CURVED SURFACES  
3647511 METHOD OF PREPARING CURVED PYROLYTIC GRAPHITE BODIES HAVING INCREASED THICKNESS TO RADIUS RATIOS  
Curved pyrolytic graphite bodies of increased thickness-to-radius ratios are produced by codepositing with the pyrolytic graphite a refractory element in progressively decreasing quantities from...
3645686 PRODUCTION OF ULTRAPURE SEMICONDUCTOR MATERIALS  
A method of reducing the contamination of ultrapure materials, such as silicon, with impurities from carbon bodies used in the production of said material s which method comprises pretreating the...
3644607 USE OF VAPOR PHASE DEPOSITION TO MAKE FUSED SILICA ARTICLES HAVING TITANIUM DIOXIDE IN THE SURFACE LAYER  
3642521 PRODUCTION OF METAL OXIDES  
High-purity metal oxide articles are produced by a process wherein a vaporous stream containing a volatile compound of the metal is intimately contacted with a vaporous combustible stream...
3632406 LOW-TEMPERATURE VAPOR DEPOSITS OF THICK FILM COATINGS  
The application of metal coatings through vapor deposition is improved by activating the coating with an abrasivelike action during the deposition process. The resultant coatings have increased...
3629049 SHAPED PYROLYTIC GRAPHITE ARTICLES  
A shaped pyrolytic graphite article comprising a pyrolytic graphite matrix containing embedded therein at least one reinforcing carbon strand layer. The carbon strand layer comprises a plurality...
3626046 METHOD OF MAKING A SOLIDIFIED DISC FROM MATERIAL WHICH IS A GAS AT ROOM TEMPERATURE  
A method for making a thin, self-supporting disc from a substance, such as hydrogen, which is a gas at room temperature said disc being eventually located in a vacuum. A metal member is provided...
3620827 METHOD OF APPLYING A LAYER OF SILICON NITRIDE  
A method of applying a layer of silicon nitride to the surface of a semiconductor substrate wherein the silicon nitride is formed in a gaseous phase containing compounds of silicon and nitrogen...
3609829 APPARATUS FOR THE FORMATION OF SILICA ARTICLES  
3607343 FLAME SPRAY POWDERS AND PROCESS WITH ALUMINA HAVING TITANIUM DIOXIDE BONDED TO THE SURFACE THEREOF  
A flame spray process and a powder composition for use therein consisting of alumina particles having 1 to 50 percent by volume of titanium dioxide bonded to the surface thereof in which said...
3600213 APERTURE MASKS  
3576932 SINTERING VAPOR DEPOSITED SILICA ON A MANDREL DESIGNED TO REDUCE SHRINKAGE  
3565674 DEPOSITION OF SILICON NITRIDE  
3565346 METHOD AND APPARATUS FOR FORMING AN ARTICLE OF HIGH PURITY METAL OXIDE  
A torch flame resulting from the combustion of gaseous silicon tetrachloride and a mixture of hydrogen and oxygen is directed upon a mandrel in order to form a high purity silica article thereon....
3565345 PRODUCTION OF AN ARTICLE OF HIGH PURITY METAL OXIDE  
A torch is provided for decomposing a volatile metal chloride by hydrolysis to directly form an oxide article on a mandrel. The torch includes a nozzle which provides an output jet stream of...
3560364 METHOD FOR PREPARING THIN UNSUPPORTED FILMS OF SILICON NITRIDE  
3549411 METHOD OF PREPARING SILICON NITRIDE FILMS  
3540871 METHOD FOR MAINTAINING THE UNIFORMITY OF VAPOR GROWN POLYCRYSTALLINE SILICON  
3531249 PYROLYTIC GRAPHITE FILAMENTS  
3529988 METHOD FOR MAKING HYPERSTOICHIOMETRIC CARBIDE COMPOSITIONS  
3522076 PHOTOPOLYMERIZED FILM,COATING AND PRODUCT,AND METHOD OF FORMING  
3522226 POLYMERIZED HEXACHLOROBUTADIENE  
3492153 SILICON CARBIDE-ALUMINUM NITRIDE REFRACTORY COMPOSITE  
3476640 SMOOTH SURFACED POLYCRYSTALS  
3467583 PROCESS FOR MAKING A HOLLOW BODY WITH PROTECTIVE INNER LAYER FOR HIGH-TEMPERATURE APPLICATIONS  
3462522 DEPOSITION OF PYROLYTIC MATERIAL  
3454691 METHOD OF MAKING FIBER-REINFORCED STRUCTURES  
3451772 PRODUCTION OF ULTRAPURE TITANIUM NITRIDE REFRACTORY ARTICLES  
3445554 MANUFACTURE OF SILICON CARBIDE RIBBONS  
3442617 METHOD FOR DEPOSITING PYROLYTIC GRAPHITE  
3441429 THIN FILM FERRITES  
3438810 METHOD OF MAKING SILICON  

Matches 251 - 300 out of 346 < 1 2 3 4 5 6 7 >