ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,679, issued on June 9, was assigned to OMYA INTERNATIONAL AG (Oftringen, Switzerland).
"Hollow spherical glass particles" was invented by Gerhard Olbert (Ludwigshafen am Rhein, Germany) and Laila Raquel Pasin E Matos (Ludwigshafen am Rhein, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is directed to hollow aluminosilicate glass particles and a process for the production thereof. Further, the present invention is directed to an article comprising said hollow aluminosilicate glass particles as well as the use of said particles as a filler for high temperature products, molten metal, injection moulded synthetic materials,...