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:
Aug. 18, 2009
Filed:
Jan. 06, 2004
John Sydney Robinson, Iluka, AU;
Lara Michelle Heatley, San Francisco, CA (US);
Takuya Tsuzuki, Winthrop, AU;
David Andrew Lee, Cottesloe, AU;
Paul Gerard Mccormick, Nedlands, AU;
John Sydney Robinson, Iluka, AU;
Lara Michelle Heatley, San Francisco, CA (US);
Takuya Tsuzuki, Winthrop, AU;
David Andrew Lee, Cottesloe, AU;
Paul Gerard McCormick, Nedlands, AU;
Advanced Nano Technologies Pty. Ltd., Welshpool, AU;
Abstract
A process for producing plate-like alumina particles with a high aspect ratio is described. Nano-sized particles of an aluminium precursor compound, optionally formed by milling, are mixed with a sufficient volume fraction of a diluent and heat treated to form substantially discrete plate-like alpha alumina particles dispersed in the diluent. A mineraliser may be added to lower the effective melting point of the system. Substantially discrete plate-like particles may be formed without agitation when the heat treatment is conducted below the melting point of the diluent.