| Patents for C03B 29 - Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins (2,193) |
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| 01/23/1992 | WO1992000921A1 Method and apparatus for bending a glass sheet |
| 01/16/1992 | DE4022278A1 Glass pane bending assembly - has suspension conveyor for glass panes to be carried vertically through the work stations |
| 01/15/1992 | CN1057820A Method and apparatus for bending glass sheet |
| 12/24/1991 | US5074900 Method of heating glass sheet for laminated glass |
| 12/03/1991 | US5069704 Method and apparatus for shaping curved glass sheets |
| 11/28/1991 | WO1991017963A1 Combination heater quench |
| 11/28/1991 | DE4017058A1 Lead crystal flame polishing - using burners to direct flames at sections of the outer surface while the workpiece is supported internally |
| 11/27/1991 | CN1056569A Glass sheet heating furnace |
| 11/23/1991 | WO1991017962A1 Glass sheet forming utilizing lower full surface vacuum mold and upper ring mold |
| 11/06/1991 | CN1014600B Heat transfer method in glass sheel bending furnace and bending furnace |
| 10/15/1991 | US5057138 Method and apparatus for preventing the arching of glass sheets in the roller-equipped furnace of a horizontal tempering plant |
| 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 |
| 10/02/1991 | EP0448983A2 Apparatus for blowing onto the two sides of a web-like material |
| 10/01/1991 | US5053604 Process and device for control of electrical resistors, particularly for an industrial furnace |
| 09/19/1991 | DE4008516A1 Glass pane roller hearth furnace - has temp. control for upper heaters according to panel size and movement |
| 09/18/1991 | CN1054577A Gas fired radiant heater for furnace floor |
| 09/10/1991 | US5047077 Combination heater quench |
| 09/05/1991 | WO1991013037A1 Furnace and conveyor method for heating glass sheets |
| 09/03/1991 | US5045503 Microwave monolithic integrated circuit with heat radiating electrode |
| 08/28/1991 | EP0443948A1 Bending of glass-sheets by gravity on a bending mould |
| 08/28/1991 | EP0443947A1 Furnace for reheating sheets of glass |
| 08/22/1991 | CA2036459A1 Glass sheet pressing by flattering jaid sheets against a clamp frame |
| 08/20/1991 | US5041151 Method and apparatus for glass edge finishing |
| 08/08/1991 | WO1991011397A1 Gas fired radiant heater for furnace floor |
| 08/07/1991 | EP0440130A1 Process for producing preforms for optical fibres with regular characteristics |
| 08/07/1991 | EP0439918A1 Method for manufacturing an article comprising a refractory dielectric body |
| 07/24/1991 | EP0437913A1 Glass treating furnace with roller conveyor |
| 07/17/1991 | EP0436591A1 Positioning device for glass bending oven. |
| 07/16/1991 | US5032163 Horizontal flame burner for furnace floor radiant heater |
| 07/02/1991 | US5028250 Glass sheet heating furnace |
| 06/19/1991 | EP0432791A1 Method for heating glass body |
| 06/16/1991 | CA2032173A1 Method for heating glass body |
| 06/11/1991 | US5022911 Gas fired radiant heater for furnace floor |
| 06/11/1991 | US5022908 Heating, shaping, cooling; automobile windows |
| 06/05/1991 | EP0429527A1 Method of enhancing the purity of fused quartz. |
| 05/29/1991 | EP0429347A1 Method of and system for bending sheet glass |
| 05/18/1991 | CA2030239A1 Method of and system for bending sheet glass |
| 05/08/1991 | EP0425998A1 Blow-back barrier |
| 04/28/1991 | CA2026798A1 Blowback barrier |
| 04/24/1991 | EP0423242A1 Apparatus for machining by the means of a plasma beam a workpiece made of a material of high softening or melting point, especially quartz, glass or a metal |
| 04/02/1991 | US5004491 Glass sheet forming method and apparatus utilizing lower full surface vacuum mold and upper ring mold |
| 03/19/1991 | US5000771 Method for manufacturing an article comprising a refractory dielectric body |
| 03/13/1991 | EP0416332A1 Method and apparatus for preventing the arching of glass sheets in the roller-equipped furnace of a horizontal tempering plant |
| 01/29/1991 | CA1279484C Glass plate heating/bending device |
| 01/22/1991 | US4986842 Heat transfer method in a glass sheet bending furnace and bending furnace |
| 01/08/1991 | US4983202 Glass sheet heating furnace and method of using |
| 01/08/1991 | US4983201 Method and apparatus in a glass sheet bending furnace for preventing the deflection of mould wagon bearing rails |
| 12/18/1990 | CA1278063C Detection of a glass sheet heated to deformation temperature |
| 12/12/1990 | CN1047664A Apparatus for processing glass |
| 11/29/1990 | WO1990014315A1 Apparatus for processing glass |
| 11/28/1990 | CN1010581B Method of mfg. optical fibres having core and cladding of glass applying rod-in-tube technique |
| 11/22/1990 | EP0398759A2 Method of heating glass sheet for laminated glass |
| 11/15/1990 | WO1990013392A1 Apparatus for machining by the means of a plasma beam a workpiece made of a material of high softening or melting point, especially quartz, glass or a metal |
| 10/17/1990 | EP0267119B1 Bending/tempering apparatus in the production of flat or bent glass sheets |
| 09/18/1990 | US4957532 Glass-treating furnace with roller conveyor |
| 09/12/1990 | EP0386382A1 Removal of defective quantities in an installation for bending and tempering glass sheets |
| 09/11/1990 | US4956697 Microwave monolithic integrated circuit with heat radiating electrode |
| 09/11/1990 | US4956001 Method and apparatus for bending and annealing glass sheets to be laminated |
| 08/28/1990 | US4952227 Apparatus for processing glass |
| 07/31/1990 | CA1272185A1 Furnace heating |
| 07/04/1990 | EP0376509A1 Method and apparatus for directed energy glass heating |
| 06/27/1990 | EP0375535A1 Production line for bent windshields |
| 06/27/1990 | EP0375484A1 Conveyor rollers for the hot zone of a furnace for quenching and/or bending glass sheets |
| 06/26/1990 | US4936890 Convexing/tempering installation for the manufacture of glass not bent into convex shape on said installation |
| 06/26/1990 | CA1270649A1 Manufacture of curved glass |
| 06/21/1990 | CA2006181A1 Method and apparatus for producing curved glazing |
| 06/13/1990 | CN1042889A Heat transfer method in glass sheel bending furnace and bending furnace |
| 05/30/1990 | EP0370313A1 Heat transfer method in a glass sheet bending furnace and bending furnace |
| 05/30/1990 | EP0370310A1 Method and apparatus for preventing the deflection of the bearing rails of a mould wagon in a glass sheet bending furnace |
| 04/11/1990 | EP0363097A1 Method of shaping sheet glass |
| 04/05/1990 | WO1990003336A1 Heating, bending and cooling system for glass |
| 04/05/1990 | WO1990003335A1 Positioning device for glass bending oven |
| 04/04/1990 | EP0361263A2 In-lehr press bending using pressurized gas |
| 03/20/1990 | US4909822 Heating; control actuator for positioning |
| 03/08/1990 | WO1990002103A1 Vitreous silica articles |
| 02/27/1990 | US4904533 Glass sheet heat treated by opposed burners |
| 02/14/1990 | CN1006780B Support frame for resistor elements in heating furnace for glass sheets |
| 02/14/1990 | CN1006779B Resistor element assembly for heating furnace of glass sheets and method of replacing resistor element |
| 02/08/1990 | DE3917332A1 Method and device for manufacturing hollow glasses from a hollow glass part and at least one solid glass part |
| 02/07/1990 | EP0354001A1 Apparatus for bending glass sheet |
| 02/07/1990 | EP0353548A1 Method and apparatus for manufacturing hollow glassware from a hollow glass part and at least one solid glass part |
| 01/16/1990 | US4894080 In-lehr glass sheet press bending using pressurized gas |
| 12/26/1989 | US4889547 Apparatus for thermal bending of glass sheets |
| 12/19/1989 | US4888038 Apparatus and method for tempering glass sheets |
| 12/12/1989 | US4886540 Blow back control device for a glass sheet tempering system |
| 11/08/1989 | CN2047265U Gas blowtorch |
| 10/24/1989 | US4876480 Low-cost, self-polished color CRT flat faceplate |
| 10/04/1989 | EP0335749A1 Glass plate heating apparatus |
| 09/26/1989 | US4869924 Microwaves from plurality of directions |
| 09/05/1989 | US4863501 Depositing, consolidating silica soot |
| 08/24/1989 | WO1989007581A1 An apparatus and method for tempering glass sheets |
| 08/08/1989 | US4854956 Method of manufacturing optical fibres having a core and a cladding of glass applying the rod-in-tube technique |
| 08/01/1989 | US4853019 Method for the transportation of glass sheets brought to the deformation temperature, its application to bending and device for its implementation |
| 08/01/1989 | CA1258030A1 Apparatus and method for treating glass sheets |
| 07/25/1989 | US4851026 Bearing unit for carrying rollers of a horizontal furnace and a horizontal furnace for glass sheets |
| 07/25/1989 | US4851022 Method and oven for ceramising glass plates |
| 05/24/1989 | EP0317409A1 Method and apparatus for the thermal bending of glass |
| 05/23/1989 | US4832597 Gas burner |
| 04/25/1989 | US4824464 Process and apparatus for heating glass sheets |