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:
Apr. 26, 2011
Filed:
Oct. 23, 2006
Liangde Xie, Pearl River, NY (US);
Mitchell Dorfman, Smithtown, NY (US);
Ashish Patel, Long Valley, NJ (US);
Michael Mueller, Long Valley, NJ (US);
Liangde Xie, Pearl River, NY (US);
Mitchell Dorfman, Smithtown, NY (US);
Ashish Patel, Long Valley, NJ (US);
Michael Mueller, Long Valley, NJ (US);
Sulzer Metco (US), Inc., Westbury, NY (US);
Abstract
According to aspects of the present invention, metal oxide powder, such as yttria and alumina powder (feed material), is processed using a plasma apparatus. The process generally consists of in-flight heating and melting of the feed material by the plasma apparatus. The plasma apparatus contains a plasma torch with required power supply and cooling systems, a powder feeder, a chamber to collect the powder and a dedusting system. The heated powder forms molten spherical droplets that are rapidly cooled under free fall conditions. The plasma densification process removes some impurity oxides, modifies the morphology of the particle and increases the apparent density of the powder.