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:
Dec. 14, 1999
Filed:
Aug. 26, 1998
Madhav B Ranade, Bethesda, MD (US);
Rohitha K Wijayatilleke, Glen Bunie, MD (US);
M Kamal Akhtar, Ellicott City, MD (US);
Geoffrey J Varga, Ellicott City, MD (US);
Particle Technology, Inc., Beltsville, MD (US);
Abstract
A precursor solution composition is provided for making highly pure, fine barium-containing silicate glass powders and specifically barium aluminoborosilicate (BABS) glass powders. An atomized precursor solution containing colloidal silica, a water soluble source of barium, boric acid, and aluminum nitrate is used to make the powders. After mixing, the liquid precursor solution is formed into fine droplets, classified for size, and pyrolyzed into fine powders. The resulting spherical particles of the BABS glass is in the 0.1 to 10 micrometer size range.