US 12,441,648 B2
Method and apparatus for producing hollow glass body products, and hollow glass body products and their use
André Witzmann, Waldershof (DE); and Fabian Wagner, Mainz (DE)
Assigned to Schott AG, Mainz (DE)
Filed by Schott AG, Mainz (DE)
Filed on Apr. 23, 2019, as Appl. No. 16/392,117.
Claims priority of application No. 10 2018 109 820.0 (DE), filed on Apr. 24, 2018.
Prior Publication US 2019/0322565 A1, Oct. 24, 2019
Int. Cl. C03B 33/085 (2006.01); B01L 3/00 (2006.01); C03B 33/10 (2006.01)
CPC C03B 33/0855 (2013.01) [B01L 3/50851 (2013.01); C03B 33/102 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A hollow glass body product, comprising:
a closed glass tube comprising:
an outer surface facing an environment;
an interior surface facing an interior of the hollow glass body;
a first closed end;
a second closed end opposite the first closed end;
a plurality of spaced apart filamentary defects produced in the outer surface;
a plurality of open passages that are formed by at least some of the filamentary defects and extend through the interior surface and the outer surface to connect the interior and the environment, each one of the plurality of open passages having a diameter less than 50 micrometers; and
an individual code defined by the plurality of open passages in a geometrical pattern comprising the plurality of open passages arranged to form squares, rectangles, parallelograms, ellipses, or mixed shapes thereof.