Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Andreas Langsdorf0
Frank Buellesfeld0
Date of Patent
May 27, 2008
Patent Application Number
10770311
Date Filed
February 2, 2004
Patent Primary Examiner
Patent abstract
The method of making globular or spherical bodies of optical quality includes filling receptacles (2) in a heat-resistant support (3) made of a porous material with glass gobs (1); conducting gas through the heat-resistant support so that a gas flow (4) passes through the support in a direction (14) opposite to a direction in which gravity acts; heating the heat-resistant support (3) to a temperature at which the glass gobs (1) have a viscosity of up to about 106 poise; maintaining the support (3) at this temperature for a predetermined time interval; and then cooling the support (3) to ambient temperature while continuing to provide the gas flow (4) through the support (3).
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