Leber; Helmut

Patent Applications and Registrations

Patent applications and USPTO patent grants for Leber; Helmut.The latest application filed is for "method and device for drawing a quartz glass cylinder from a melt crucible".

Company Profile

0.9.7

Leber; Helmut - Hanau DE

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Method and apparatus for producing a quartz glass cylinder Grant 8,613,207 - Leber , et al. December 24, 2	2013-12-24
Method And Device For Drawing A Quartz Glass Cylinder From A Melt Crucible App 20120174629 - Leber; Helmut ; et al.	2012-07-12
Melting Crucible For Use In A Crucible Drawing Method For Quartz Glass App 20110281227 - Franz; Bernhard ; et al.	2011-11-17
Method For Producing Quartz Glass Doped With Nitrogen And Quartz Glass Grains Suitable For Carrying Out The Method App 20110183138 - Trommer; Martin ; et al.	2011-07-28
Method for coating a component for use in a crucible drawing method for quartz glass, and coated component obtained according to the method Grant 7,955,715 - Trommer , et al. June 7, 2	2011-06-07
Method And Apparatus For Producing A Quartz Glass Cylinder App 20110113829 - Leber; Helmut ; et al.	2011-05-19
Method and device for drawing a tubular strand of quartz glass App 20090064715 - Horn; Roland ; et al.	2009-03-12
Method for coating a component for use in a crucible drawing method for quartz glass, and coated component obtained according to the method App 20070178329 - Trommer; Martin ; et al.	2007-08-02
Process for manufacture of a component made of opaque synthetic quartz glass Grant 6,684,664 - Werdecker , et al. February 3, 2	2004-02-03
Process for manufacture of a component made of opaque synthetic quartz glass, and quartz glass tube manufactured according to the method App 20020134108 - Werdecker, Waltraud ; et al.	2002-09-26
Coated quartz glass component Grant 5,562,774 - Breidenbach , et al. October 8, 1	1996-10-08
Method for producing a composite glass body with drawing of concentric melts Grant 5,364,432 - Leber November 15, 1	1994-11-15
Method for the tool-free reshapingof a tubular body Grant 5,171,343 - Leber , et al. December 15, 1	1992-12-15
Process for the purification of granular silicon dioxide Grant 4,956,059 - Englisch , et al. September 11, 1	1990-09-11
Method for the continuous production of a tube or rod of vitreous fused silica Grant 4,923,497 - Leber , et al. May 8, 1	1990-05-08

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