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3976377 |
Method of obtaining the distribution profile of electrically active ions implanted in a semiconductor
A method of obtaining a distribution profile of electrically active ions, of one type conductivity, implanted into a semiconductor, of an opposite type conductivity, is carried out with the aid of...
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3967040 |
Production of colored glass bodies
Glass bodies formed from a vitrifiable composition are given a desired coloration by introducing a reducing agent into surface layers of the body, during or after its formation from a molten...
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3963468 |
Light guide fabrication
A light guide is produced by the out-diffusion of boron oxide through a free surface of a uniform borosilicate mass. The resulting structure consists of increased index silica rich regions near the...
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3961926 |
Preparation of germania cores in optical fibers
A method for forming optical fibers reduces losses of germania dopant due to evaporation during chemical vapor deposition. After deposition of a high purity silica layer on the inner surface of a...
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3957476 |
Method of diffusing ions into quartz glass
Quartz glass element, such as a diffusion tube useful in the production of semiconductor elements, capable of forming an outer layer of uniformly fine crystalline silica such as cristobalite or...
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3941474 |
Light-conducting glass structures
By heat treating a glass member containing at least one kind of cation to constitute a modifying oxide in contact with a source of another kind of cation to cause ion substitution, a...
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3941625 |
Glass passivated gold diffused SCR pellet and method for making
Disclosed is an SCR pellet and a method for the fabrication thereof. A layer of oxide is grown on a semiconductor wafer that has been diffused to form a plurality of SCR pellets and openings are...
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3940531 |
Stain decorated glass-ceramic article
A method for producing decorated glass-ceramic articles is disclosed. The method involves contacting a surface of a crystallizable glass with molten tin and thereafter applying to the...
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3938974 |
Method of producing optical wave guide fibers
Procedures are disclosed for producing both core-cladding optical fibers and self-focusing optical fibers from porous germinate and/or silicate glasses obtained after phase separation and removal...
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3936188 |
Color sorting of irradiated materials and a calibrated color comparison array
Methods of isolating quartz, quartzite, glass or silicate materials having selected aluminum contents are described. The non-destructive method comprises subjecting the materials to ionizing...
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3933609 |
Method of making coloured photomasks
The method of making coloured photomasks used in manufacture of printed-circuit boards and microcircuits, consisting in doping the surface of a glass substrate with a staining metal by virtue of a...
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3920483 |
Method of ion implantation through a photoresist mask
An improvement in the method of ion implantation into a semiconductor substrate through a photoresist mask wherein the photoresist mask is subjected to an RF gas plasma oxidation prior to the ion...
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3912480 |
Glass annealing process
A process for improving the optical properties of glass comprises heating glass to its annealing temperature, holding it at this temperature in a molten salt with a viscosity of not more than 100cp...
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3907586 |
Glass articles having a brown to reddish-brown color from borosilicate glass of a low thermal expansion by means of silver diffusion dye
The silver diffusion dyeability of borosilicate glasses having a low thermal expansion coefficient and which are essentially free of arsenic and antimony is improved by adding 0.005-0.5 wt. % tin...
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3905791 |
Method for making colored transparent articles
In the coloring of bodies of glass by diffusion of coloring ions from a treatment medium into surface layers thereof, the repeatability of the resulting coloration is improved by controlling not...
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3902881 |
Method of forming an opalescent article having a colored bulk and at least one surface strata of a different color than the bulk
A glass article composed of silica and a coloring ion selected from Co, Ni, Cu, Sn, Sb, and Pb is subjected to a specified heat cycle, at least a portion of which is in a reducing atmosphere, to...
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3902882 |
Electrically modified float glass manufacturing methods
A metallic dispersion of predetermined intensity is developed in a glass surface by introducing a concentration of metal ions into the glass surface while the glass is at a temperature at which it...
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3894857 |
Process for exchanging alkali ions for thallium ions in a glass fiber
A novel laser comprises a fiber-like light transmission medium having a gradient in the refractive index which is greatest at its axis and gradually decreases toward the surface and which includes...
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3892904 |
Glass ceramic article having a metallic coating layer in a localized area or its surface and method of making the same
A glass-ceramic article having in a localized area of its surface a coating layer of copper and/or silver integrally bonded to the glass-ceramic body, in which the surface having the metallic layer...
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3891419 |
Glass-ceramic and process therefor
This invention relates generally to articles of glass-ceramic, including glass-ceramic components of articles, and to processes for manufacturing these glass-ceramic articles. Specifically, glass...
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3888648 |
Method for forming an optical wave guide coupler
A method of forming an optical radiation waveguide integral with a glass substrate in combination with a coupler for coupling optical radiation into the waveguide. The waveguide and coupler are...
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3887348 |
Glass coloring process
Bodies made of soda-lime-silica glass of ordinary composition and containing a small concentration of reducing ions at least in surface layers thereof and having no visible coloration are given a...
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3879183 |
Corona discharge method of depleting mobile ions from a glass region
A method of depleting a surface region of a glass body of mobile positive ions, comprising subjecting the body to a corona discharge using an anode and a cathode disposed adjacent opposite surfaces...
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3879274 |
ELIMINATION OF HARMFUL SUBSTANCES FROM MOLTEN SALT USED IN THE ION EXCHANGE TREATMENT OF GLASS ARTICLES
In the method of eliminating from the molten salt used in the ion exchange treatment of glass articles those substances which are harmful to the ion exchange operation, the improvement which...
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3879110 |
Small fly's eye lens array
A fly's eye lens arrangement is formed in a transparent substrate having a first group of ions by electromigration of a second group of ions through a plurality of apertures in a masking film...
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3877783 |
Gradient refractive index light-conducting glass structure
A light-conducting glass structure, the refractive index of which in each cross section perpendicular to the centre line or plane along which light is to advance of the structure decreases...
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3876407 |
Method for producing a metal coated glass-ceramic article
A method for producing a metal-coated glass-ceramic article which comprises melting a glass of a composition in the silica-alumina system containing a nucleating agent and a small amount of copper...
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3875290 |
Process for preparing metal hydrogen ion-exchanged crystalline aluminosilicates
Metal, hydrogen ion-exchanged aluminosilicates are prepared by a process comprising heating an aqueous slurry of a nitrogen compound which hydrolyzes slowly to form ammonia, a metal salt and an...
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3873408 |
Method of producing a refractive index gradient in glass
Method of increasing the refractive index of a surface layer of an alkali-silicate glass by diffusing ions of silver, thallium, copper, or combinations thereof into the glass at temperatures of...
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3859103 |
OPTICAL GLASS BODY HAVING A REFRACTIVE INDEX GRADIENT
An optical glass body comprising at its central axis 50 to 70 mol % of SiO 2 , 10 to 30 mol % of B 2 O, 1 to 25 mol % of Tl 2 O and R 2 O, the total proportion of Tl 2 O and R 2 O being 10 to...
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3857689 |
ION EXCHANGE PROCESS FOR MANUFACTURING INTEGRATED OPTICAL CIRCUITS
An integrated circuit is constructed by first forming a mask that defines a desired optical circuit pattern on a transparent glass substrate. The mask may be made of Ti, Ta, Nb, Zr, Cr, Al or an...
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3852052 |
METHOD OF PRODUCING DECORATED GLASS-CERAMIC SURFACES
A method for producing decorated glass-ceramic articles is disclosed. The method involves contacting a surface of a crystallizable glass with molten tin and thereafter applying to the tin-contacted...
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3850602 |
SALT VAPOR ATMOSPHERE TREATMENT OF QUARTZ CRYSTAL GRANULES
Bubble-free and OH-free quartz glass is made from granular quartz crystal by doping quartz crystal granules with a salt whose cation is selected from the group of lithium, sodium, potassium,...
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3850605 |
MANUFACTURE OF PATTERNED GLASS
Patterned float glass is manufactured by locating in contact with the float ribbon, while it is hot, a shaped molten body of a material for modifying the glass surface. The configuration of the...
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3843228 |
PRODUCTION OF LIGHT-CONDUCTING GLASS STRUCTURES WITH REFRACTIVE INDEX DISTRIBUTION
A contact surface of a glass body, along an axis of which light is to adve, containing at least one modifying oxide is caused to contact an agent having an affinity for the oxide sufficient to...
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3837827 |
METHOD FOR PRODUCING OPTICAL WAVEGUIDING LAYERS IN SOLID TRANSPARENT MEDIA
The specification describes a method for producing light guiding layers in transparent crystals, such as LiNbO 3 and LiTaO 3 , by selectively outdiffusing the Li 2 O component, by heating above...
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3837826 |
COLOR SORTING OF IRRADIATED QUARTZ MATERIALS
Methods of isolating quartz, glass or silicate materials having selected aluminum contents are described. The non-destructive method comprises subjecting the materials to ionizing irradiation for a...
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3836348 |
METHOD FOR MANUFACTURING OPTICAL INTEGRATED CIRCUITS UTILIZING AN EXTERNAL ELECTRIC FIELD
A method for manufacturing optical integrated circuits forms light guide paths in a substrate by an ionic exchange process. Ions initially present in the substrate are replaced by ions from a...
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3836347 |
CONTINUOUS PRODUCTION OF LIGHT-CONDUCTING GLASS FILAMENTS WITH REFRACTIVE INDEX GRADIENT
An electric current is passed by means of electrode means through a body of molten glass which is maintained at a temperature above its softening point and is flowing in contact with the electrode...
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3830640 |
PRODUCTION OF LIGHT-CONDUCTING GLASS STRUCTURES WITH INDEX GRADIENT
A light-conducting glass rod is passed continuously through a furnace when it is heated to a temperature above its softening point and is stretched into a thin filament. The rod has a refractive...
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3827785 |
GLASS LENS HAVING REDUCED CHROMATIC ABERRATION AND REFRACTIVE INDEX GRADIENT
A glass lens having a reduced chromatic aberration and a refractive index gradient such that its refractive index is expressed by the following equation N = No (1 - ar 2 ) Wherein N is the...
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3816222 |
METHOD FOR PREPARING VITREOUS BODY BY DIFFUSION OF IONS THROUGH A COATING LAYER
A process, and a body treated in accordance therewith, for adding a layer to a body of vitreous, vitrocrystalline or ceramic material which layer is subsequently at least partially crystallized....
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3816161 |
GLASS-CERAMIC DECORATION
An improved method for decorating glass-ceramic articles whereby high fidelity decorations having uniform color and sharply defined edges are integrated into the glass-ceramic crystal structure by...
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3811855 |
METHOD OF TREATING A GLASS BODY TO PROVIDE AN ION-DEPLETED REGION THEREIN
A method that modifies the composition of a region adjacent the surface of an ion conducting glass body comprises applying an electric field, at an elevated temperature, between opposite surfaces...
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3808060 |
METHOD OF DOPING SEMICONDUCTOR SUBSTRATES
There is disclosed a method of controlling surface dopant concentration in a semiconductor material in which the dopant is diffused from a doped oxide source. The method involves the use of an...
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3805734 |
DEVICE FOR THE DIFFUSION OF DOPING MATERIAL
A device used for receiving semiconductor discs and doping material during a diffusion process which includes a heating step to diffuse the doping material into the semiconductor disc characterized...
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3802761 |
OPTICAL WAVEGUIDE EDGE COUPLER USING GRADED INDEX PROFILE
An optical radiation waveguide integral with a glass substrate in combination with a coupler for coupling optical radiation into the waveguide. The waveguide and coupler are formed by thermal...
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3798016 |
MANUFACTURE OF FLAT GLASS
Float glass having a predetermined characteristic is manufactured by maintaining a body of surface modifying molten material against the hot glass surface, and later cleansing the treated glass...
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3791806 |
CONTINUOUS PRODUCTION OF LIGHT-CONDUCTING GLASS FIBERS WITH ION DIFFUSION
In a process for continuously producing a light conducting glass fiber whin the refractive index in a plane perpendicular to the optical axis of the glass fiber is so distributed that it...
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3791714 |
METHOD OF PRODUCING GLASS FOR OPTICAL WAVEGUIDES
Deuterium is used instead of hydrogen in a process for producing glass having low hydroxyl ion content. In a flame hydrolysis process deuterium gas, or a deuterium compound gas, is passed through a...
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