Patent application number | Description | Published |
20090277223 | Method and apparatus for producing a crucible of quartz glass - The invention starts from a method for producing a crucible of quartz glass in that SiO | 11-12-2009 |
20090320521 | Method of producing a quartz glass crucible - A method of producing a quartz glass crucible for pulling a single crystal comprising: providing a melting mold comprising a wall having passages between outside and inside; providing an outer layer granulation consisting of first coarser SiO | 12-31-2009 |
20110120189 | Method for producing a component with a layer of transparent quartz glass - In a known method for producing a component with a layer of transparent quartz glass, comprising: applying particles of synthetically produced quartz glass to a base body made of quartz glass and sintering the particles so as to form the quartz glass layer. Starting therefrom, in order to permit a comparatively inexpensive and reproducible production of a component with at least one layer of transparent quartz glass that is distinguished by ultrahigh purity and the absence of bubbles, it is suggested according to the invention that at least part of the SiO | 05-26-2011 |
20110123738 | METHOD OF MAKING A SILICA CRUCIBLE IN A CONTROLLED ATMOSPHERE - A silica crucible is made in a mold cavity of the type in which ambient atmosphere can be drawn through silica grain in the cavity. In one embodiment, a silica grain layer is formed in the mold cavity and gas, which may comprise helium, nitrogen, hydrogen, or a mixture thereof, is introduced into the mold cavity. The silica grain layer is heated while substantially no ambient atmosphere is drawn through the silica grain. Thereafter, at least a portion of the silica grain layer is fused while drawing ambient atmosphere through the silica grain. The gas displaces air in the mold cavity thereby reducing nitrogen oxides and ozone. | 05-26-2011 |
20130219963 | METHOD FOR PRODUCING SYNTHETIC QUARTZ GLASS GRANULES - The production of synthetic quartz glass granules by vitrifying a free-flowing SiO | 08-29-2013 |
20150052948 | METHOD FOR PRODUCING A MOLDED BODY FROM AN ELECTRICALLY MELTED SYNTHETIC QUARTZ GLASS - In a known method for producing a mold body from synthetic quartz glass, quartz glass granules ( | 02-26-2015 |
20150059407 | METHOD FOR PRODUCING SYNTHETIC QUARTZ GLASS GRANULES - The production of quartz glass granules comprises the granulation of pyrogenically produced silicic acid and the formation of a SiO | 03-05-2015 |
20150107301 | METHOD FOR PRODUCING SYNTHETIC QUARTZ GLASS GRANULES - The production of a quartz glass grit comprises the granulation of pyrogenetically produced silicic acid, and the formation of a SiO | 04-23-2015 |