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. 25, 2023
Filed:
Aug. 04, 2020
Heraeus Quarzglas Gmbh & Co. KG, Hanau, DE;
Matthias Otter, Hamm, DE;
Walter Lehmann, Leipzig, DE;
Michael Hünermann, Alzenau, DE;
Nils Christian Nielsen, Göllheim, DE;
Nigel Robert Whippey, Seligenstadt, DE;
Boris Gromann, Aschaffenburg, DE;
Abdoul-Gafar Kpebane, Hanau-Mittelbuchen, DE;
Matthias Söhn, Darmstadt, DE;
Heraeus Quarzglas GmbH & Co. KG, Hanau, DE;
Abstract
One aspect relates to a process for the preparation of a quartz glass body, including providing a silicon dioxide granulate, wherein the silicon dioxide granulate was made from pyrogenic silicon dioxide powder and the silicon dioxide granulate has a BET surface area in a range from 20 to 40 m/g, making a glass melt out of silicon dioxide granulate in an oven and making a quartz glass body out of at least part of the glass melt. The oven has at least a first and a further chamber connected to one another via a passage. The temperature in the first chamber is lower than the temperature in the further chambers. On aspect relates to a quartz glass body which is obtainable by this process. One aspect relates to a light guide, an illuminant and a formed body, which are each obtainable by further processing of the quartz glass body.