| Patents for C03B 20 - Processes specially adapted for the production of quartz or fused silica articles (2,756) |
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| 12/06/1992 | CA2070481A1 Method for producing glass soot deposit |
| 11/25/1992 | EP0514731A2 Method of producing light wave guides on a substrate |
| 11/19/1992 | CA2068801A1 Method of producing optical waveguides on a substrate |
| 11/17/1992 | US5163987 Method for producing glass preform for optical fiber |
| 10/28/1992 | EP0510816A2 Process and apparatus for the production of fused silica |
| 10/06/1992 | US5152819 Method of making fused silica |
| 09/30/1992 | CN1064953A Quartz-like crystal face for luxury watch |
| 09/29/1992 | US5151117 Solution doping of porous preforms |
| 09/16/1992 | CN1064462A Method for manufacturing lightwave conductor blank |
| 07/29/1992 | EP0496273A1 Method for the production of pure quartz glass |
| 07/28/1992 | US5133796 Air-tight sintering furnace for the production of a quartz preform |
| 07/21/1992 | CA1305375C Method of manufacturing fiber preform for single-mode fibers |
| 07/01/1992 | EP0492124A2 Precipitated silica paste |
| 07/01/1992 | EP0492073A1 Process for fabricating an optical waveguide preform |
| 06/25/1992 | CA2058404A1 Precipitated silica |
| 05/19/1992 | CA1300886C Method of manufacturing a preform for asymmetrical optical fiber |
| 04/01/1992 | EP0478059A1 Body of cerium-doped quartz glass |
| 03/17/1992 | US5096479 Electrolytic purification |
| 02/25/1992 | US5090980 Vapor phase; optical waveguides |
| 02/19/1992 | EP0471139A2 Method of making high purity, non-porous fused silica bodies |
| 02/11/1992 | CA1295519C Conveyor deposition system |
| 02/02/1992 | WO1992002467A1 A method of making sol-gel monoliths |
| 02/02/1992 | CA2088500A1 Method of making sol-gel monoliths |
| 01/21/1992 | US5082484 Apparatus for making quartz glass crucibles |
| 01/09/1992 | WO1992000189A1 Apparatus and method of forming optical waveguides on metalized substrates |
| 01/02/1992 | EP0463543A1 Manufacture of quartz glass crucible for use in the manufacture of single crystal in silicon |
| 12/31/1991 | US5076980 Method of making sol-gel monoliths |
| 12/03/1991 | US5069741 For manufacture of monocrystal silicon rod |
| 12/03/1991 | US5069700 method of manufacturing gradient-index glass |
| 11/13/1991 | CN1014701B Production method suitable for open-tube gallium diffusion quartz tube |
| 11/05/1991 | US5063181 Synthetic silica glass article for dopant-diffusion process in semiconductors |
| 11/05/1991 | US5063003 Prehydrolysis of alkoxysilanes, atomizing oligomers, discharging spray into water to form cured polysiloxane beads in slurry, forming paste of separated beads, casting or molding, drying, heat treatment, sintering |
| 11/05/1991 | CA1291645C Method of manufacturing solid glass preforms from hollow preforms |
| 10/22/1991 | US5059475 Apparatus and method of forming optical waveguides on metalized substrates |
| 10/03/1991 | CA2013731A1 Furnace for heating highly pure quartz preform for optical fiber |
| 10/03/1991 | CA2013730A1 Furnace for producing high purity quartz glass preform |
| 09/25/1991 | EP0258457B1 Process for manufacturing glass |
| 09/25/1991 | CN1014047B Method of and apparatus for overcladding an optical preform rod |
| 09/17/1991 | US5049175 Method of manufacturing a glass body having a non-uniform refractive index |
| 09/10/1991 | US5047076 Impergnation, anhydrous solvent |
| 09/03/1991 | CA1288208C Method and apparatus for forming shaped pieces of insulation |
| 08/27/1991 | US5043002 Oxidation, flame hydrolysis; halogen-free; by-product inhibitor |
| 08/07/1991 | EP0258455B1 Process for manufacturing glass |
| 07/02/1991 | US5028247 Process for the preparation of silica glass powders |
| 06/25/1991 | US5026413 Process for manufacturing quartz glass pipes having a high content of silica with only minor diameter deviations |
| 06/05/1991 | EP0429527A1 Method of enhancing the purity of fused quartz. |
| 06/04/1991 | US5021073 Hydrolyzing methyl silicate with aqueous ammonia, solidification, heating, dehydration, de-solventization, decarburization, and pulverization; sintering |
| 05/28/1991 | CA1284418C Process for manufacturing a product suitable for producing pure quartz glass as well as a process for producing pure quartz glass from this product and use of this product for growing piezoelectric crystals |
| 05/22/1991 | CN1012641B Method for fabricating articles which include high silica glass bodies and articles formed thereby |
| 05/02/1991 | EP0258456B1 Process for manufacturing glass |
| 04/10/1991 | EP0420989A1 Sintering furnace for producing quartz base material |
| 04/02/1991 | US5004488 Heating low density silica flour; forming fused silica; grinding |
| 03/13/1991 | EP0416865A1 Synthetic silica glass and a manufacturing method thereof |
| 01/22/1991 | US4986939 Method for the production of cylindrically symmetric bodies with a radial gradient |
| 01/22/1991 | CA1279289C Extruding reduced viscosity silica into green body, purification and sintering |
| 01/16/1991 | CN1011227B Mfg. method for optics fibre |
| 01/15/1991 | CA1279032C Manufacturing glass bodies by means of shearing forces in elastic mould, purification and sintering |
| 01/08/1991 | CA1278685C Method of making polarization preserving optical fiber |
| 01/01/1991 | US4981435 For receiving and holding a work piece |
| 12/25/1990 | US4979973 Preparation of fused silica glass by hydrolysis of methyl silicate |
| 12/19/1990 | EP0402610A2 Process for the preparation of silica glass powders |
| 12/18/1990 | CA1277819C Method of and arrangements for manufacturing glass bodies |
| 12/12/1990 | EP0401742A1 Process and apparatus for plasma outside deposition of silica free from hydroxyl ions |
| 11/28/1990 | CN1010581B Method of mfg. optical fibres having core and cladding of glass applying rod-in-tube technique |
| 11/20/1990 | CA1276588C Electrodeposition of microdispersed silica to form porous green body |
| 10/31/1990 | EP0394640A1 Method for making silica tubes or tubes with a high content of silicic acid with low diameter variation |
| 10/17/1990 | EP0392599A2 Method of manufacturing glass bodies with areas of different optical refraction |
| 10/03/1990 | CN1045758A Production of non-transparent opal quatz glass by gas smelting |
| 10/01/1990 | WO1990011974A1 Sintering furnace for producing quartz base material |
| 09/26/1990 | EP0389128A2 Process for producing high purity fused quartz powder |
| 09/11/1990 | US4956134 Method of and apparatus for controlling the filling of a mold with a pulverulent refractory material |
| 09/04/1990 | CA1273485A1 Apparatus for fabricating optical fiber preform |
| 08/22/1990 | EP0276311B1 Method for manufacturing basic material for optical fiber |
| 08/14/1990 | CA1272604A1 Method for producing glass preform for optical fiber |
| 07/24/1990 | CA1271919A1 Process for fabricating optical fiber |
| 07/18/1990 | EP0265024B1 Method for making a shaped body from ceramics or glass |
| 07/18/1990 | CN2059437U Resistance stove for drawing tube |
| 07/03/1990 | US4938788 Method of producing uniform silica glass block |
| 07/03/1990 | CA1271042A1 Method of manufacturing glass bodies |
| 06/27/1990 | CN1008520B Mfr. device for optical fibres material |
| 06/19/1990 | US4935045 Method of manufacturing a preform for asymmetrical optical fiber |
| 06/13/1990 | EP0372550A1 Method of fabricating optical fibres by the solution-doping technique |
| 05/23/1990 | EP0369091A1 Method for manufacturing amorphous silica objects |
| 05/09/1990 | EP0367127A1 Synthetic silica glass article for dopant-diffusion process in semiconductors |
| 05/08/1990 | US4923497 Method for the continuous production of a tube or rod of vitreous fused silica |
| 04/03/1990 | CA1267425A1 Lithium-aluminum-silicate glass ceramic powders and methods of making them |
| 03/28/1990 | EP0360659A1 Synthetic fused silica glass and method for the preparation thereof |
| 03/28/1990 | EP0199787B1 Vitreous silica |
| 03/27/1990 | US4911896 Drawing a single crystal silicon rod from molten polysilicon |
| 03/08/1990 | WO1990002103A1 Vitreous silica articles |
| 02/20/1990 | US4902328 Method of manufacturing shaped bodies from ceramics or glass |
| 02/20/1990 | US4902325 Method for producing glass preform for optical fiber |
| 02/13/1990 | US4900894 Method of heating a quartz glass tube |
| 02/13/1990 | CA1265711A1 Method for producing glass preform for optical fiber |
| 12/20/1989 | EP0223852B1 Method of fabricating optical fiber preforms having reduced susceptibility to radiation damage |
| 12/06/1989 | EP0344360A2 Method for continuously making tubes or rods from quartz glass |
| 10/24/1989 | US4875918 Method of manufacturing fiber preform for single-mode fibers |
| 10/18/1989 | CN2046122U Automatic air refining apparatus |
| 10/17/1989 | US4874417 Method of purifying vitreous silica |
| 10/17/1989 | US4874416 Base material of optical fibers and a method for the preparation thereof |