US 12,240,777 B2
Glass tube
André Witzmann, Waldershof (DE); Volker Trinks, Mitterteich (DE); and Thomas Lenz, Mainz (DE)
Assigned to Schott AG, Mainz (DE)
Filed by Schott AG, Mainz (DE)
Filed on Jun. 25, 2021, as Appl. No. 17/358,467.
Claims priority of application No. 20182696 (EP), filed on Jun. 26, 2020.
Prior Publication US 2021/0403362 A1, Dec. 30, 2021
Int. Cl. C03B 17/04 (2006.01); A61J 1/05 (2006.01); C03B 33/06 (2006.01); C03C 3/093 (2006.01)
CPC C03B 17/04 (2013.01) [A61J 1/05 (2013.01); C03B 33/06 (2013.01); C03C 3/093 (2013.01)] 19 Claims
OG exemplary drawing
 
1. At least one glass tube having an azimuthal wall thickness deviation WTD of not more than 6.0%, the azimuthal wall thickness deviation being determined based on a lowest wall thickness value and a highest wall thickness value measured within a cross-section of the at least one glass tube, the azimuthal wall thickness deviation WTD being calculated according to the following formula:

OG Complex Work Unit Math