US Patent Issued to Southwest Petroleum University on April 14 for "Particle size statistical method of granular minerals of shale" (Chinese Inventors)

ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,671, issued on April 14, was assigned to Southwest Petroleum University (Chengdu, China).

"Particle size statistical method of granular minerals of shale" was invented by Min Xiong (Chengdu City, China), Lei Chen (Chengdu City, China), Xiucheng Tan (Chengdu City, China), Yubing Ji (Chengdu City, China) and Qingsong Cheng (Chengdu City, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a particle size statistical method of granular minerals of shale, comprising: collecting shale samples; cutting the collected samples into the size of 1 cmx1 cmx1 cm; performing argon ion polishing; magnifying the samples by the fiel...