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| Number | Title | Issue Date |
| 7269974 | Bushing temperature controller A bushing temperature controller includes a transformer 3 which supplies a main current I1 to the bushing 2 for accommodating molten glass, and regulation current supply units 7 and 8 which are adapted to supply regulation currents... | 09/18/2007 |
| 7149034 | Assessing mark for microlens An assessing mark of microlens array fabricated in a scribe line region includes two vertical line patterns arranged substantially in parallel with each other, and a horizontal line pattern connecting the vertical line patterns. The vertical line patterns and horizo... | 12/12/2006 |
| 7099540 | Optical coupling device and process for fabrication thereof An optical coupling device has an optical wave-guide varied in difference in specific refractive index between a clad layer and a core layer, and the optical wave-guide serves as a convergent/divergent spot size converter; since reduction in cross section of the cor... | 08/29/2006 |
| 5618325 | Method of manufacturing a multi-component glass cylindrical part in the form of a tube and/or rod Method of manufacturing a multi-component glass cylindrical part comprising the operations of providing a vertical cylindrical cavity lined with porous membranes whose inside dimensions are very slightly larger than those of the glass cylindrical part and... | 04/08/1997 |
| 4995892 | Process and apparatus for controlling the thermal environment of glass fiber forming The subject matter of this invention relates to an improved method for controlling an industrial glass fiber-forming process. More particularly, it involves a method for controlling the thermal environment of several fiber glass bushing assemblies by the ... | 02/26/1991 |
| 4650508 | Method and apparatus for changing bushings An apparatus for changing bushings in a glass melting furnace is disclosed. A support attached to the furnace holds the bushings beneath an opening in the forehearth. A replacement bushing is placed in the framework, translated next to the operating bushi... | 03/17/1987 |
| 4525188 | Fiber forming bushing and method for using same The invention involves a fiber glass bushing which is provided with a plurality of tubular feed inlets, through a top cover chamber, which by means of controlled introduction of a gaseous medium allows a gaseous void to be maintained above the glass level... | 06/25/1985 |
| 4217123 | Double crucible method of optical fiber manufacture A method for forming optical fibres from a double crucible wherein one crucible supplies the core material and the other crucible supplies the cladding material. The two melts are supplied in a continuous process to insure a constant core to cladding diam... | 08/12/1980 |
| 3981704 | Method and apparatus for processing glass This invention embraces a method of and apparatus for processing heat-softenable fiber-forming material, such as glass, involving treatment of a surface of a feeder from which flow streams of the heat-softened glass through the establishment of an environ... | 09/21/1976 |
