US Patent Issued to SUMITOMO METAL MINING, Panasonic Energy on March 11 for "Positive-electrode active material for lithium-ion secondary battery and lithium-ion secondary battery" (Japanese Inventors)

ALEXANDRIA, Va., March 12 -- United States Patent no. 12,249,711, issued on March 11, was assigned to SUMITOMO METAL MINING Co. LTD. (Tokyo) and Panasonic Energy Co. Ltd. (Osaka, Japan).

"Positive-electrode active material for lithium-ion secondary battery and lithium-ion secondary battery" was invented by Ayumi Miura (Ehime, Japan), Hiroyuki Fujimoto (Osaka, Japan), Masanori Maekawa (Osaka, Japan) and Kaoru Nagata (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A positive-electrode active material for a lithium-ion secondary battery, wherein an average pore size of the positive-electrode active material is 0.2 micro metre to 1.0 micro metre when a pore size is measured in a range of 0.0036 micr...