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| Number | Title | Issue Date |
| 4062690 | Coating compositions for glass fibres A coating composition for glass fibres intended for use as reinforcement in cementitious products is disclosed, which contains at least one monocyclic or polycyclic aromatic compound having at least three hydroxyl groups on the aromatic ring or (in a poly... | 12/13/1977 |
| 4058387 | Simultaneously baking and sealing a faceplate assembly A sealing glass composition comprises a PbO-containing glass frit, two particulate refractory fillers having controlled particle size distributions, and optionally at least one additive to prevent the chemical reduction of the PbO when the frit is fired i... | 11/15/1977 |
| 4057408 | Method for making photosensitive colored glasses The instant invention relates to photosensitive glasses, i.e., glasses which, after an exposure to high energy or actinic radiations, can be heat treated in a certain manner to develop a colored transparent article, or which can be thermally opacified to ... | 11/08/1977 |
| 4055436 | Glass for manufacturing white-colored glass-crystalline material Glass characterized by the introduction into its composition of K2 O amount to 4 to 7% by weight, in place of Na2 O. Such glass has an increased viscosity at the crystallization temperatures enabling the use of continuous production ... | 10/25/1977 |
| 4038448 | Composite glass articles spontaneous opal glass and enamel of Li2 -O-B2 -O3 -TiO2 -ZrO2 -PbO-SiO2 This invention relates to the production of a composite article consisting of an opal glass body exhibiting a dense, milky-white appearance coated with an adherent enamel demonstrating high gloss and exceptional chemical durability. More specifically, the... | 07/26/1977 |
| 4026692 | Press molding optical articles from acid hydrated glasses A glass article having relatively high degrees of surface smoothness, durability, and light transmissivity can be made by forming a glass comprising, in mole percent on an oxide basis, 70-80% SiO2, 8-18% Na2 O and/or K2 O,... | 05/31/1977 |
| 4018965 | Photochromic sheet glass compositions and articles Chemically-strengthenable silver halide-containing lithium boroaluminosilicate glass compositions having physical and chemical characteristics required for sheet drawing processes and exhibiting excellent photochromic properties after heat treatment, and ... | 04/19/1977 |
| 4017318 | Photosensitive colored glasses The instant invention relates to photosensitive glasses, i.e., glasses which, after an exposure to high energy or actinic radiations, can be heat treated in a certain manner to develop a colored transparent article, or which can be thermally opacified to ... | 04/12/1977 |
| 4014705 | Glass compositions Alkali-resistant continuously-drawn glass fibers, for use in the reinforcement of cement products, are composed of SiO2 67 to 82 mol.%, ZrO2 7 to 10 mol.%, R2 O 9 to 22.5 mol.% (where R = Na, up to 5 mol.% of which may be ... | 03/29/1977 |
| 4006028 | Sealing glass compositions and pastes and use thereof A sealing glass composition comprises a PbO-containing glass frit, two particulate refractory fillers having controlled particle size distributions, and optionally at least one additive to prevent the chemical reduction of the PbO when the frit is fired i... | 02/01/1977 |
| 4000998 | Spontaneously-formed nepheline-carnegieite glass-ceramics The instant invention relates to the manufacture of articles demonstrating the physical properties and internal microstructure of glass-ceramic bodies but which can be formed spontaneously from molten glass. Thus, the heat treatment of a precursor glass b... | 01/04/1977 |
| 3997352 | Mica-spodumene glass-ceramic articles This invention is concerned with the production of glass-ceramic articles wherein phlogopite mica solid solution and beta-spodumene solid solution comprise the primary crystal phases. Such articles demonstrate good machineability characteristics along wit... | 12/14/1976 |
| 3985531 | Spontaneously-formed fluormica glass-ceramics This invention relates to the manufacture of articles exhibiting the physical properties and internal microstructure of glass-ceramics but which can be formed spontaneously from a glass-forming melt, i.e., the heat treatment of a glass body to cause the c... | 10/12/1976 |
| 3985532 | Spontaneously-formed celsian glass-ceramics The instant invention relates to the production of articles exhibiting the physical properties and internal microstructure of glass-ceramic materials but which can be formed spontaneously from a molten glass, i.e., no heat treatment of a glass body to cau... | 10/12/1976 |
| 3985533 | Spontaneously-formed beta-spodumene glass-ceramics The instant invention relates to the production of articles exhibiting the physical properties and internal microstructure of glass-ceramic materials but which can be formed spontaneously from a molten glass, i.e., no heat treatment of a glass body is req... | 10/12/1976 |
| 3981736 | Biocompatible glass ceramic material The glass ceramic material of the present invention has the following composition, in weight percent,: About 20 to about 60 percent of silicon dioxide SiO2, about 5 to about 40 percent of phosphorus pentoxide P2 O5, about 2.7 to abo... | 09/21/1976 |
| 3981707 | Method of making fluorine out-diffused optical device A fluorine containing silicate glass substrate is heated to a temperature sufficiently high to permit fluorine to out-diffuse from the surface thereof. A surface region is formed having a gradient fluorine concentration in a direction perpendicular to the... | 09/21/1976 |
| 3975174 | Manufacture of foam glass Finely divided glass, which may have a viscosity between 106 and 107 poises at 950°C to 1100°C and which may be of a composition suitable to conversion into a vitroceramic, is mixed with up to a few percent by weight of a foaming a... | 08/17/1976 |
| 3969121 | Glass compositions and fibers made therefrom Glass compositions, having improved chemical resistance and useful in the form of fibers for reinforcing cementitious materials, consisting essentially of: From 50 to 75 percent by weight Silica From 10 to 25 percent by weight R2 O from 1 to 15 perc... | 07/13/1976 |
| 3964916 | Casting powder Particulate casting material is applied onto the upper surface of molten steel in a vertical continuous casting mold where it rapidly melts to form a protective flux-lubricant molten glass covering which also flows down between the solidifying cast steel ... | 06/22/1976 |
| 3962514 | Exuded transition metal spinel films on glass-ceramic articles Suitable glass-ceramic base compositions, including some siicates, aluminosilicates, lithium aluminosilicates, and boroaluminates, are modified by the addition of suitable quantities of transition metal oxides prior to melting and forming into thermallycr... | 06/08/1976 |
| 3957498 | Boron-free silver halide photochromic glasses Clear alkali aluminosilicate glasses free of boron but exhibiting good stability against copper and silver reduction, resistance to opalization, reduced temperature melting characteristics, and good photochromic properties after heat treatment are describ... | 05/18/1976 |
| 3955990 | Vitroceramics Vitroceramic products having a dispersed devitrified phase in a vitreous body, of fine grain, are made from particular compositions having specific limitations as to the content of particular ingredients, by methods which involve a controlled nucleation, ... | 05/11/1976 |
| 3954656 | Laser glasses with high damage threshold and method of making such glasses Laser glasses having high resistance to self-damage during operation are formed in all ceramic melting units, in the presence of a fining agent to eliminate the formation of metallic inclusions and semi-conductive inclusions and using base glass compositi... | 05/04/1976 |
| 3938978 | Method of making crystallized glass Crystallized glass has hitherto been made by the use of the mineral petalite as the source of lithium values. Petalite is in short supply, and when attempts are made to use lithium carbonate or a similar lithium salt in place of petalite in the glass batc... | 02/17/1976 |
