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4737475 Arsenic-free lead silicate vacuum tube glass  
A glass composition specially useful in the glass envelope of TV receiver tubes and which is of the lead silicate type is disclosed comprising in weight percent 30-65% SiO 2 , 20-40% PbO, 5-20%...
4734388 Glass for cathode ray tube faceplates  
The present invention relates to glass compositions suitable for cathode ray tube faceplates which are essentially free from readily reducible metal oxides, MgO, and fluorine, and which consist...
4719186 Optical and ophthalmic glass with refractive indices greater than or equal to 1.56, Abbe numbers greater than or equal to 40 and densities less than or equal to 2.70 g/cm.sup.3  
An optical and ophthalmic glass with high refractive index, high Abbe number and low density, which is distinguished by good chemical stability, good crystallization behavior and capability of...
4694219 Discharge lamp arc tubes  
An arc discharge lamp is provided using sealing compositions comprising mainly Al 2 O 3 --SiO 2 --MgO. Preferred compositions include between 25 to 28% by weight of MgO and 13 to 21% by weight...
4684847 Glass composition suitable for use in a fluorescent lamp, tube and lamp envelope manufactured from said glass composition, and fluorescent lamp having a lamp envelope manufactured from said glass composition  
A new type of glass, for example for use as a TL-envelope glass which as regards phosphor poisoning and Hg penetration has better properties than the present TL-envelope glasses. Phosphor poisoning...
4608352 Neutron-absorbent glasses containing gadolinium and process for their preparation  
The present invention relates to neutron-absorbent oxide or oxynitride glasses containing gadolinium and a process for their preparation. The glasses according to the invention, which incorporate...
4599319 PbO-free glasses for cathode ray tubes having a high protective effect against X-rays while simultaneously having good resistance to acid and stability to radiation  
New, PbO-free glasses for cathode ray tubes are composed of (in % by weight) 50-52 SiO 2 ; 0-3 Al 2 O 3 ; 1-1.7 Li 2 O; 6.5-10.7 Na 2 O; 0-4.5 K 2 O; 0.4-1.4 F; 0-0.5 TiO 2 ; 0.2-1.2 CeO 2 ...
RE32107 Carbon-containing monolithic glasses and ceramics prepared by a sol-gel process  
What is disclosed is a method of preparing carbon-containing monolithic glassy ceramics from organosilsesquioxanes, metal oxides and metal alkoxides through pyrolysis of their gels. Also disclosed...
4554259 Low expansion, alkali-free borosilicate glass suitable for photomask applications  
Alkali-free borosilicate glass have been developed having coefficients of thermal expansion (+20° C. to +200° C.) below 40.5×10 -7 , densities less than 3.0 g/cm 3 and good visible and UV...
4542105 Glass composition for covering semiconductor element  
A glass composition for covering a semiconductor element. The glass composition has excellent resistance to chemicals and excellent electric characteristics. The glass composition includes 3 to 8%...
4540672 Glasses of low density and high index of refraction for ophthalmic and optical applications  
This invention relates to glasses especially suitable for optical and ophthalmic applications which exhibit densities less than about 2.65 g/cm 3 , refractive indices between about 1.595-1.607, and...
4530909 Aluminosilicate glass containing Y.sub.2 O.sub.3 concentrate and ZrO.sub.2  
A process for preparing aluminosilicate glass comprising from 30 to 60 molar % of SiO 2 , from 20 to 35 molar % of Al 2 O 3 and from 10 to 30 molar % of a total of rare earth oxides composed...
4526874 Optical light weight glass with a refractive index of >1.70, an Abbe index of >22 and a density of <3.5 G/CM.sup.3  
An optical glass with the familiar optical position of n d >1.70 and v d >22, which differs from the familiar optical glasses of the optical position due to its lower density and good...
4521524 Contrast enhancement filter for color CRT display devices  
A glass filter for contrast enhancement in a color CRT display devices comprises 100 parts by weight of a base glass comprising, in % by weight 3 to 70% SiO 2 , 0 to 40% B 2 O 3 , 0 to...
4520115 High absorbance Pb-containing glass for cathode ray tube picture screen  
These objects have been attained by providing highly absorbent lead containing alkali metal silicate glasses for cathode ray tube image screens, having a linear absorption coefficient μ of >30...
4495298 Thallium-containing optical glass  
A thallium-containing optical glass composition which comprises the following oxides in the indicated proportions in mole %: SiO 2 35-80, Tl 2 O 1-30, Tl 2 O+R 2 O (R being an alkali metal)...
4473653 Ballistic-resistant glass-ceramic and method of preparation  
A composition and method of making a high strength semi-crystalline ceramic material of the lithium, aluminum, silicon oxides system type. The composition is characterized by a relatively narrow...
4472030 Cesium-containing optical glass  
A cesium-containing optical glass comprising, by weight, 32-56% of SiO 2 , 6-25% of K 2 O, 6-32% of Cs 2 O, 0-30% of BaO, 0-2.5% of MgO, 5-34% of ZnO, 0-3% of ZrO 2 and 0-5% of SnO 2 , provided...
4454446 Cathode ray tube for a light source  
In a cathode ray tube for a light source, a fluorescent surface adapted to emit light having one of three colors, red, green and blue is formed on the inner surface of a face plate which is...
4439008 Optical fiber of the graded index type and method of producing same  
An optical fiber of the graded index type consisting of a glass having predominantly the composition 60-70 mole % SiO 2 , 15-30 mole % alkali metal oxides, and 10 to 15 mole % MgO in combination...
4437192 Implants of biologically active glass or glass ceramic containing titania  
A biologically active glass and class-ceramic composition useful for making surgical and dental implants comprising, by mol %,: TBL ______________________________________ SiO 2 ...
4429007 Electrical wire insulation and electromagnetic coil  
An electromagnetic coil for high temperature and high radiation application in which glass is used to insulate the electrical wire. A process for applying the insulation to the wire is disclosed...
4412963 Method of producing discharge lamp arc tubes  
The invention provides a method of producing discharge lamp arc tubes of ceramic material complete with metal cermet end closure members using initially incompletely fired sintered components and a...
4406681 Method of making manganese sensitized neodymium fluorescent glasses  
Disclosed is a process for preparing fluorescent inorganic glasses containing Nd 2 O 3 as a fluorescent species and containing MnO as a sensitizer but containing essentially no higher oxides of...
4390637 X-Ray absorbing glass for a color cathode ray tube having a controlled chromaticity value and a selective light absorption  
A panel glass of a color cathode ray tube exhibiting a high absorption of X-radiation and an excellent resistance to electron and/or X-ray browning, which is modified by 0.1-5.0 wt % Nd 2 0 3 to...
4376829 Glass for use in monochromatic colored light emitting cathode ray tubes  
In a plurality of monochromatic colored light emitted cathode ray tubes arranged in a surface to form a huge screen for displaying a colored picture, glass for use in light-source cathode ray tubes...
4366253 Phosphate glass compositions, and glass-ceramic materials, and methods of making the same  
Phosphate glass compositions are described comprising from 8 to 35 wt % P 2 O 5 , from 8 to 48 wt % SiO 2 and GeO 2 , provided that the GeO content is not more than 6 wt %, from 3 to 18 wt % B 2 ...
4366252 Fluorine-free, zirconia-free, X-ray absorbing silica based glass, containing oxides of lead, barium and strontium plus oxides of calcium, magnesium, sodium, potassium, cerium, titanium, arsenic and antimony  
A fluorine-free glass composition is disclosed especially adapted for forming the faceplate of a cathode ray tube such as a television tube. The glass is silica based and includes a fluorine-free...
4358542 Photochromic glass suitable for microsheet and simultaneous heat treatment and shaping  
The instant invention is directed to the production of photochromic glasses having compositions consisting essentially, as analyzed in weight percent on the oxide basis, of SiO 2 --55-60 Al...
4345037 Alkali resistant glass fibres for cement reinforcement  
Alkali-resistant glass fibres for use as reinforcement in cementitious products are formed from a composition comprising, in weight percentages: TBL ______________________________________ SiO 2 ...
4345036 Optical glass fibres and method of forming such fibres  
In optical glass fibres formed of high-silica glass which is susceptible to the production of color centers on drawing into fibres, the attenuation due to such drawing-induced color centers is...
4337410 Cathode-ray tube face-plate  
Glass compositions which are suitable for making face-plates of cathode-ray tubes used for displaying television pictures, particularly for displaying color television pictures. A problem in...
4331770 Low liquidus glasses for television tube faceplates  
The instant invention is directed to faceplate glasses for television picture tubes which, because they are essentially free from MgO, have liquidus temperatures below 800° C. Such glasses consist...
4330628 Alkali-resistant glass fibres  
Alkali-resistant glass fibres, in the form of continuous-filament for use as reinforcement in cementitious products, or in the form of glass wool, are given enhanced alkali resistance by the...
4314909 Highly refractory glass-ceramics suitable for incorporating radioactive wastes  
This invention is concerned with the production of glass-ceramics especially suitable for incorporating radioactive wastes. The inventive glass-ceramics contain at least two crystal phases selected...
4311529 Tinted opal glass  
The present invention is concerned with the production of spontaneous opal glasses which, after thermal tempering, demonstrate a dense coloration ranging from ivory through yellow-beige to tan to a...
4298388 Alkali-free sealing glasses for molybdenum  
SiO 2 -Al 2 O 3 -alkaline earth oxides glass compositions suitable for glass/molybdenum sealings with high thermal load capability, having coefficients of thermal expansion in the temperature...
4288250 Glass filter for contrast enhancement in CRT displays  
A green contrast enhancement filter for CRT display devices which is prepared by adding about 0.1 to 1.5 part by weight of Cr 2 O 3 , about 0 to 0.5 part by weight of CuO and about 0 to 0.2 part...
4284686 Spectacle lenses to reduce discomfort from aphakia and certain eye diseases  
This invention is concerned with producing glasses suitable for use as spectacle lenses for aphakics or for persons subject to photoretinitis or retinitis pigmentosa. The glasses exhibit near-zero...
4265667 Step-type light-transmitting body having excellent water resistance  
A step-type light-transmitting body having excellent water resistance, said light-transmitting body comprising a core material of a glass having the following composition in % by weight: (1) SiO 2 ...
4257811 Solarization and irradiation resistant optical glasses  
Optical glass is disclosed which has an increased resistance to solarization and irradiation as well as little or no undesirable coloring. This glass is designed to exhibit as many properties...
4223077 Na.sup.+ -conducting glass, glass-ceramic and crystalline cubic composition  
Na + -conducting glass and glass-ceramic of the composition comprising aNa 2 O, bSiO 2 , cM 2 O 3 , dM'O 2 and eM"O wherein, based on the combined molar amounts totaling 100%, a is 32-41 mole...
4200467 Zirconium-containing borosilicate glasses  
Disclosed are zirconium-containing borosilicate glass compositions having a refractive index n e between 1.55 and 1.72, and Abbe number ν e between 50 and 34 and a negative anomalous partial...
4194807 Optical fiber wave-guides for signal transmission comprising multiple component glass with an adjusted expansion co-efficient between the core and mantle  
The present invention discloses an optical fiber wave-guide for signal transmission in which the signal fiber has a linear thermal expansion co-efficient in all of the fiber elements above 15×10...
4190451 Photochromic glass  
The instant invention is concerned with transparent photochromic glass compositions which not only exhibit desirably rapid darkening and fading characteristics, but which also demonstrate the other...
4179638 Cathode ray tube panel  
There is disclosed an improved glass panel for a cathode ray tube adapted to use in color television reception. The panel glass undergoes a minimum amount of compaction on reheating, has a strain...
4162921 Glass-crystalline material and method of producing same  
Glass-crystalline material has dielectric properties close those of alumina ceramics (dielectric constant is 10 and dielectric loss factor (3-5) 0.10 -4 at a frequency of 10 10 Hz). The material...
4160672 Glass-ceramics for semiconductor doping  
Disclosed are B 2 O 3 -containing glass-ceramic bodies made by in situ thermal crystallization of glasses and useful as a host for diffusion doping of semiconductors by the vapor phase transport...
4134747 Method of forming transparent and opaque portions in a reducing atmosphere glass  
This invention is concerned with the preparation of glass articles wherein a portion thereof is opaque and another portion thereof is transparent and, optionally, integrally colored. The opaque...
4130680 Strong, lightweight photosensitive laminate  
Photosensitive laminated glass useful for providing strong, lightweight glass articles incorporating integral surface decorations resistant to mechanical and chemical deterioration in use are...
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