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:
Sep. 21, 2021
Filed:
Nov. 06, 2018
Applicant:
Dennert Poraver Gmbh, Postbauer-Heng, DE;
Inventor:
Wolfram Neidhardt, Hilpoltstein, DE;
Assignee:
Dennert Poraver GmbH, Postbauer-Heng, DE;
Primary Examiner:
Int. Cl.
CPC ...
C03B 19/10 (2006.01); C03C 11/00 (2006.01); C03C 1/00 (2006.01); C03C 1/02 (2006.01);
U.S. Cl.
CPC ...
C03B 19/107 (2013.01); C03C 1/002 (2013.01); C03C 1/02 (2013.01); C03C 11/002 (2013.01);
Abstract
A method for producing hollow glass microspheres includes preparing an aqueous suspension of starting materials including finely ground glass and waterglass. Combustible particles are produced from the suspension and are mixed with an AlO(OH)-containing pulverulent release agent. The mixture of combustible particles and release agent is introduced into a combustion chamber of a furnace where it is expanded at a combustion temperature which exceeds the softening temperature of the finely ground glass, to form the hollow microspheres. Hollow glass microspheres produced according to the method are also provided.