Patent ID: 8496893

Claim:
A method of forming a dielectric powder, the method comprising: placing a precipitated precursor powder into a chamber of a chamber assembly, the chamber assembly comprising: a first section including first and second ends, a first joint disposed at the first end, a conical portion at the second end, a first filter disposed between the first and second ends, and a lumen extending through the first section in fluid communication with the first filter; and a second section including first and second ends, a second joint disposed at the first end, an opening disposed at the second end to receive the conical portion of the first section, a second filter disposed between the first and second ends, and a lumen extending through the second section in fluid communication with the second filter; when engaged, the first and second sections forming the chamber between the first and second filters, the chamber being in fluid communication with the respective first ends of the first and second sections; and heating the precipitated precursor powder to a calcining temperature.