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4021216 |
Method for making strip microchannel electron multiplier array
A linear array of electron multiplier microchannels is formed by fusing a plurality of solid core glass fibers into a rectangular array. A number of arrays is then sandwiched between a pair of...
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4019884 |
Method for providing porous broad-band antireflective surface layers on chemically-durable borosilicate glasses
A method for providing broad-band antireflective surface layers on a chemically durable borosilicate glass which comprises phase-separating the glass by heat treatment at 630°-660° C., removing a...
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4018958 |
High-frequency raster with irregular structure of raster elements
What is proposed is a high-frequency raster with an irregular structure of raster elements. This raster is a plane-parallel glass plate with transparent roughnesses on its surface characterized by...
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4015965 |
Method of making artificial intraocular lenses with holes
Making perforate optical sections (lenses) of pseudophakoi with avoidance of drilling operations and adversities thereof. Lens material is cast over wires corresponding in diametral size and...
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4013493 |
Process for etching glass or ceramic surface
Glasslike materials have been produced by heating plumbite-treated cellulosics in a limited oxygen atmosphere while in contact with a glass or ceramic surface. Cotton-lace, knits, and other designs...
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4011091 |
Ceramic materials containing keatite
Disclosed are low expansion, chemically resistant, ceramic articles containing keatite as the principal crystalline phase. The articles are prepared from compositions in the Li 2 O.Al 2 O 3 .SiO...
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4011071 |
Method of making glass shaving instrument
A glass blade is produced from a preform of insoluble glass having a sharp edge encased in soluble glass. The encased preform is heated and drawn to the reduced cross-sectional size desired of the...
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3997312 |
Method of manufacturing colored glass articles
A method of manufacturing colored pressed glass articles by indiffusion of ions under reducing conditions, in which method before the indiffusion a layer having a thickness of at least 10 μm is...
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3989495 |
Method of making optical prisms
Making an optical prism of an enlarged ground and polished insoluble glass preform encased with soluble glass. The glass combination is heated and drawn to the reduced cross-sectional size desired...
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3982917 |
Method of increasing the strength of silicate glass laser rods
Glass laser rods are treated and strengthened by a method which produces a ardened surface that protects the laser rods from physical abrasion, prevents failure due to thermal shock, and removes...
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3981706 |
Method for making flexible colored fiber optic device
A leached fiberscope formed of a multiplicity of optical fibers each surrounded by a stray light absorber adjacent opposite ends of the fiberscope. This light absorber is formed by adding a...
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3977071 |
High depth-to-width ratio etching process for monocrystalline germanium semiconductor materials
A process for etching high depth-to-width ratio grooves in the surface of monocrystalline germanium-comprising semiconductor material by orienting the material so that the surface to be etched is...
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3975175 |
Process for increasing the strength of sealing glass
The strength of high lead or alkaline earth oxide sealing glass articles is increased by treating the surface of the articles with a solution of dilute nitric acid containing about 1-10 weight...
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3964942 |
Chemical polishing of single crystal dielectrics
A polishing method for single crystal dielectrics such as sapphire and magnesium spinel is disclosed. A single crystal wafer of sapphire or magnesium spinel is immersed in a mixture of sulphuric...
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3958058 |
Ultra-low expansion ceramic articles
Ultra-low expansion ceramic articles, having average linear coefficients of thermal expansion below about 5.4 × 10 - 7 /°C over the range from room temperature to 1000°C, are produced by...
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3951707 |
Method for fabricating glass-backed transducers and glass-backed structures
A glass or other dielectric backed transducer structure is formed by utilizing a series of processes including at least one electrostatic bond. The processes enable one to bond a semiconductor...
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3945816 |
Method for forming a refractory cellular product
A lightweight refractory foam primarily of silica can be formed from a phase-separable silicate glass such as borosilicate glass, by melting the glass, foaming the glass at elevated temperatures,...
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3933455 |
Method for joining optical fibre bundles
Misregistration and losses between the ends of coupled optical fibre-bundles are reduced by tapering the fibre ends. The ends are etched to remove a portion of the outer cladding glass around each...
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3933453 |
Flame hydrolysis mandrel and method of using
There is disclosed a method and apparatus for providing optically pure glass blanks, tubing, crucibles and the like for use in forming optical waveguides, lenses, prisms, filters, lamp envelopes...
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3926601 |
Method for making glass blades
A blank of a plurality of vitreous materials is prepared by selecting a first vitreous material which is relatively resistant to chemical etching and grinding it to a desired blade configuration...
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3913148 |
Intraocular lens apparatus
An intraocular lens apparatus for insertion into a posterior chamber adjacent the iris of an eye. The apparatus includes a lens having a front face, a central portion and an outer periphery and a...
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3912481 |
Method for making alkali metal silicate thermoplastic materials
This invention is concerned with the production of inorganic silicate materials which exhibit properties akin to the desirable characteristics of high-polymer organic plastics. Thus, the materials...
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3911167 |
Electron multiplier and method of making same
Dynode plates useful in electron multiplying devices and method of forming same, which comprises providing a plate of insulating material having a plurality of holes therethrough, glazing a layer...
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3905792 |
Method of manufacturing semi-conducting glasses exhibiting electrical conductivity in the mass
A method of manufacturing semi-conductor glasses exhibiting conductivity in the mass comprising the steps of obtaining conventional reducible or oxidizable glasses, grinding the glasses to a...
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3904422 |
Porous glass support material
Porous glass support materials having two essentially distinct zones of porosity. An outer surface zone comprises an outer shell with relatively large pores of controlled diameter while an inner...
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3902880 |
Method of making a fiber optic illuminating halo
An illuminating halo for use in conjunction with an image-transporting fiber optic bundle. The halo is formed of a multiplicity of light-conducting fibers each having a leachable outer cladding....
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3899314 |
Lens manufacturing process
Manufacturing semifinished and certain finished opthalmic lenses without surface grinding and polishing operation. A flat preform comprised of a thickness of a desired lens glass, e.g. ophthalmic...
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3899315 |
Method of making glass clad glass lenses
Lenses clad with a relatively thin layer of glass for enhancing their impact resistance and, by choice of the manufacturer, providing a uniform lens coloration from edge to edge in each case...
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3898092 |
Method for reducing acid lead solubility of a lead-containing glaze or frit
A method for reducing the acid lead solubility of a lead-containing glaze or frit. A lead-containing glass consisting essentially of not more than 70 percent by weight of lead oxide and at least 30...
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3883337 |
Method of manufacturing a glass object by molding and sintering glass powder
In the disclosed method of manufacturing glass objects by molding and sintering glass powder, a layer of colloidal silica is applied onto the surface of the glass particles of the powder prior to...
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3881944 |
Porous glass-ceramic bodies for catalyst supports
This invention relates to the development of strong, highly porous glass-ceramic bodies exhibiting extremely high surface areas such as to render them eminently suitable for catalyst supports...
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3864111 |
Reducing Stress Birefringence in Fused Silica Optical Elements
Stress-birefringence in light transmitting fused-silica optical elements is reduced by the etch removal of surface layers stressed by mechanical abrasion and thermal effects in the fabrication of...
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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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3831466 |
GLASS BLADE AND GLASS BLADE BLANK
A blank of a plurality of vitreous materials is prepared by selecting a first vitreous material which is relatively resistant to chemical etching and grinding it to a desired blade configuration...
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3813205 |
ULTRASONICALLY ETCHED PHOTOFLASH LAMP
A miniature photoflash lamp is provided having a hermetically sealed glass envelope which has been given a liquid etching treatment on the exterior surface to reduce thermal failure of the lamp by...
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3808065 |
METHOD OF POLISHING SAPPHIRE AND SPINEL
The (1102) crystallographic oriented surfaces of sapphire wafers and the (100) crystallographic oriented surfaces of spinel wafers are chemically polished by immersing the wafers in a melt of...
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3805387 |
FIBER RAZOR BLADE
A cutting instrument wherein a plurality of generally axially aligned hollow fibers are fused to form a substantially integral assembly. The assembly has at least one surface contoured to define a...
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3792987 |
METHOD OF MAKING AN IMPROVED POROUS GLASS SUPPORT MATERIAL
Porous glass support materials having two essentially distinct zones of porosity. An outer surface zone comprises an outer shell with relatively large pores of controlled diameter while an inner...
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3785793 |
METHOD OF LEACHING HIGH SILICA GLASS HAVING 0.5-2.0% P O
The addition of small controlled amounts of P 2 O 5 to a borosilicate glass improves the speed and homogenity of phase separation upon heating of the glass. A borosilicate glass of the formula...
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3779732 |
METHOD OF MAKING GLASS LASERS OF INCREASED HEAT DISSIPATION CAPABILITY
Glass lasers containing at least 1 mole percent of lithium oxide based on the total glass composition expressed in oxide content and having a compressive stress surface layer whereby increased...
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3775075 |
METHOD OF FORMING OPTICAL WAVEGUIDE FIBERS
A method of forming an optical waveguide by first forming a coating of glass with a predetermined index of refraction on the outside peripheral wall surface of a glass cylinder having a different...
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3775078 |
PROCESS FOR MAKING CARBON-CONTAINING CERAMICS
A process for carbon-impregnating a refractory porous article,particularly a porous glass article, comprising the steps of impregnating the porous article with a polymerizable furan derivative,...
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3771983 |
METHOD FOR FABRICATION OF PRECISION MINIATURE GLASS CIRCUITS
Precision miniature glass circuits, such as fluidic circuits and optical waveguide and laser circuits, are fabricated by assembling a plurality of glass members of at least two differing types of...
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3769113 |
METHOD OF ETCHING GLASS
A method of etching glass, and particularly relatively large glass plates, to provide art form panels. A material resistant to acid, such as asphaltum, is applied to a surface of the glass plate...
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3767384 |
RECOVERY OF TIN FROM ORE CONCENTRATES AND OTHER TIN-BEARING MATERIALS
Tin bearing materials are converted to a glass and the glass is acid-leached to obtain the tin in solution in chemically combined form.
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3765853 |
PROCESS FOR MAKING METAL SPHERES IN OXIDE GLASSES
A process for making small metal spheres encapsulated in an oxide glass. A metal compound, which decomposes to the elemental metal upon heating is mixed with oxide glass particles such that the...
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3753840 |
FABRICATION OF CURVED GLASS SHEETS
A process for bending glass sheets to form permanently curved sheets by subjecting the sheets to a surfacing treatment which removes a layer from at least one surface of the sheet and thus removes...
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3746785 |
DEFLECTABLE MEMBRANE OPTICAL MODULATOR
A deflectable membrane optical modulator with an improved substrate for support of the deflectable member is described. The improved substrate supports the deflectable member in close proximity to...
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3735213 |
A NONPOROUS VITREOUS BODY FOR SUPPORTING ELECTRONIC DEVICES
A support for electronic circuitry comprises a generally cylindrical metallic frame to which a ground lead is attached and a body of homogeneous glass, ceramic, pyroceram or other vitreous hard...
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3734802 |
APPARATUS FOR LEACHING GLASS FILMS
Apparatus and method for leaching films including a container having within it means for supporting the film in inclined disposition during introduction and removal of heated fluids.
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