US Patent Issued to RICOH on March 17 for "Alumina powder and method of producing the same, and stack and method of producing the same" (Japanese Inventor)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,405, issued on March 17, was assigned to RICOH COMPANY LTD. (Tokyo).

"Alumina powder and method of producing the same, and stack and method of producing the same" was invented by Hidetoshi Kami (Chiba, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An alumina powder satisfying the following expressions is provided: (Expression 1) 0.7TXless than equal toTAless than equal to1.3TX; (Expression 2) 0.7TXless than equal toTBless than equal to1.3TX; and (Expression 3) 0.7TXless than equal toTCless than equal to1.3TX, where TX represents a mean value of a peak height TA of a peak A in a particle size distribution of 0.3 micro metre or more to less th...