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:
Jan. 23, 2024
Filed:
Jul. 10, 2020
Applicants:
Heraeus Quarzglas Gmbh & Co. KG, Hanau, DE;
Heraeus Conamic Uk Limited, Wallsend, GB;
Inventors:
Ian George Sayce, Wallsend, GB;
Michael Schindler, Wallsend, GB;
Fabian Schildt, Hanau, DE;
Eduard Visnow, Hanau, DE;
Assignees:
Heraeus Quarzglas GmbH & Co. KG, Hanau, DE;
Heraeus Conamic UK Limited, Tyne and Wear, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 3/06 (2006.01); C22B 59/00 (2006.01); C22B 60/02 (2006.01); C22B 3/22 (2006.01); B03B 5/62 (2006.01); C01B 33/12 (2006.01); C03C 1/02 (2006.01);
U.S. Cl.
CPC ...
C03C 3/06 (2013.01); B03B 5/623 (2013.01); C01B 33/12 (2013.01); C03C 1/022 (2013.01); C22B 3/22 (2013.01); C22B 59/00 (2013.01); C22B 60/0252 (2013.01); C22B 60/0291 (2013.01); C01P 2004/03 (2013.01); C01P 2004/61 (2013.01); C01P 2006/80 (2013.01); C03C 2201/02 (2013.01);
Abstract
Described is a process for the refinement of a quartz powder, comprising the step of separating microparticles of refractory minerals, in particular minerals containing rare earth metal compounds, from the quartz powder by an elutriation step.