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| Number | Title | Issue Date |
| 7313310 | Plasma directing baffle and method of use The present invention provides an assembly that may be used to clean the external surfaces of fiber optic cable. The assembly includes a baffle housing, a plasma source, a cable guide, and brackets to position the baffle and plasma source. The baffle housing defines... | 12/25/2007 |
| 6988379 | Method of manufacturing large capacity preforms by MCVD The invention provides a low cost method of manufacturing high capacity preforms by chemical vapor deposition. More particularly, there is described a method of manufacturing an optical fiber preform, which method comprises the steps of providing a substrate tube of... | 01/24/2006 |
| 6748769 | Method of producing glass particles deposit A plurality of glass particle synthesizing burners are disposed opposite to a rotating starting rod. The starting rod and the glass particle synthesizing burners are relatively reciprocally moved to each other in parallel to the axial direction, so that glass partic... | 06/15/2004 |
| 6305195 | Process for fabricating silica article involving joining of discrete bodies An improved process for fabricating a refractory dielectric article, in particular silica optical fiber, is provided. The fabrication process involves joining of two elongated bodies--typically silica preforms--end-to-end by use of an isothermal plasma to... | 10/23/2001 |
| 6041623 | Process for fabricating article comprising refractory dielectric body The smoothness of refractory dielectric bodies, particularly silica sol-gel bodies, is substantially improved by a relatively straightforward treatment. In particular, the surface of the body is treated with a plasma fireball, such as induced by a plasma ... | 03/28/2000 |
| 5979190 | Method for manufacturing an article comprising a refractory a dielectric body A refractory dielectric body is heated with a plasma fireball at conditions which do not result in substantial removal of a surface portion of the body, yet which are sufficient to reduce both surface and bulk impurities. Typically, the body is treated wi... | 11/09/1999 |
| 5595669 | Method of forming coupling diopters at the ends of optical fibers To enable surface tension forces to confer upon an optical fiber end (P1), a shape procuring good optical coupling the end is partially melted in an electric arc (ZC). To improve the reproducibility of this shape movement into the arc is achieved by a uni... | 01/21/1997 |
| 5157685 | Method and apparatus for preparing a melt for mineral fibre production A method of preparing a melt for mineral fibre production wherein a mixture of mineral fibre-forming raw materials is introduced into a shaft furnace and is heated to melting temperature by a plasma gas stream formed in a plasma torch and wherein waste ma... | 10/20/1992 |
| 5123941 | Apparatus for producing mineral wool The present invention relates to a method of producing mineral wool, mineral raw material (2) is introduced into a melting unit (3), preferably a cupola furnace, for heating the mineral raw material in such a manner that molten mineral material (4) is for... | 06/23/1992 |
| 5104432 | Process for fiberizing molten glass or refractory oxide materials A process for the treatment of a continuous or perturbated stream of liquid material, which process consists essentially of passing the said stream of liquid material through a plasma arc coupling zone in which at least two plasma arcs are coupled at the ... | 04/14/1992 |
| 5045506 | Process for producing mineral fibers incorporating an alumina-containing residue from a metal melting operation and fibers so produced A process for producing mineral fibers and the fibers thus produced are disclosed. The process involves forming a melt comprising an alumina-containing residue from a metal melting operation and one or more mineral raw materials suitable for forming miner... | 09/03/1991 |
| 4797142 | Method of preparing a melt for the production of mineral wool Method of preparing a melt for the production of mineral wool wherein suitably composed raw material and coke are fed into a preheating zone in the upper portion of a shaft furnace and are caused to descend down through the oxidation zone in which air is ... | 01/10/1989 |
| 4769195 | Manufacturing a silicon carbide fiber reinforced glass composite using plasma spraying A method for manufacturing a silicon carbide fiber reinforced glass composite, which comprises either dipping silicon carbide fibers in molten glass in a tank, the molten glass being given wave vibration of 10-30 KHz by a supersonic vibrator provided with... | 09/06/1988 |
| 4521236 | Method for preparation of porous glass film There is provided a method for preparation of porous glass films, preferably in the form of a hollow filament, comprising heating glass films, formed from sodium borosilicate glass having a composition which can be phase-separated by heat-treatment into a... | 06/04/1985 |
| 4440556 | Optical fiber drawing using plasma torch In order to provide a high power heat source having a very clean and invariable heat flux, a ring plasma is induced in a heating zone of a plasma torch including a plurality of coaxial tubular elements and the optical fiber is drawn through a channel pass... | 04/03/1984 |
