The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 14, 2026
Filed:
Jun. 22, 2022
Heraeus Quarzglas Gmbh & Co. KG, Hanau, DE;
Andreas Götzendorfer, Hanau, DE;
Gerrit Scheich, Hanau, DE;
Nadine Tscholitsch, Hanau, DE;
Joerg Hammerschmidt, Hanau, DE;
Miriam Sonja Höner, Hanau, DE;
Heraeus Quarzglas GmbH & Co. KG, Hanau, DE;
Abstract
Producing a molded body made of opaque quartz glass includes providing SiOgrains obtained by comminuting quartz glass having a purity of at least 99.9 wt % SiO, forming a slurry containing a suspension liquid and the SiOgrains and which has a total solids content, wet grinding the SiOgrains in the slurry so as to form ground SiOgrain particles, forming a porous green body from the slurry, and sintering the porous green body. To provide a low cost quartz glass, the wet grinding of the SiOgrains takes place at least temporarily in the presence of SiOnanoparticles, the proportion of which in the total solids content of the slurry is in the range of 0.1 wt % to 10 wt %, and the slurry has a solids content in the range of 76 to 80 wt % after addition of the SiOnanoparticles and after the wet grinding.