ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,127, issued on Sept. 8, was assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT Co. LTD. (Osaka, Japan).
"Fine-particle powder containing calcium oxide or calcium hydroxide and production method for same" was invented by Hisao Nagai (Osaka, Japan), Hiroki Maruyama (Osaka, Japan), Takeshi Koiwasaki (Osaka, Japan) and Takafumi Okuma (Fukui, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing a fine-particle powder containing calcium oxide or calcium hydroxide includes: preparing a pulverized powder of shells or eggshells; introducing the pulverized powder of shells or eggshells into a controlled atmosphere, vaporizing the pu...