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:
Nov. 19, 2002
Filed:
Nov. 14, 2000
National Science Council, Taipei, TW;
Abstract
This invention provides a method for production of AlN powder. An Al powder was poured into a refractory container having an opening end. If the packing density of the Al powder was less than 0.8 g/cm , the container containing the Al powder was placed in a reaction chamber filled with nitrogen. If the packing density was larger than 0.8 g/cm , porous aluminum tubes were placed vertically in Al powder or an initiator was placed on top of the Al powder or both were taken. The container was then placed in the reaction chamber filled with nitrogen. A nitrogen stream was allowed to flow through the Al powder from the bottom to the top and the combustion synthesis reaction was ignited by heating the top surface of the reactant powder.