US Patent Issued to SEIKO EPSON on Oct. 20 for "Magnetic beads, magnetic beads dispersion liquid, method of manufacturing magnetic beads, and method of manufacturing magnetic beads dispersion liquid" (Japanese Inventor)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,770,766, issued on Oct. 20, was assigned to SEIKO EPSON Corp. (Japan).

"Magnetic beads, magnetic beads dispersion liquid, method of manufacturing magnetic beads, and method of manufacturing magnetic beads dispersion liquid" was invented by Akira Arai (Shimosuwa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Magnetic beads include: a magnetic metal powder; and a coating layer covering a surface of the magnetic metal powder. t/D50, which is a ratio of a thickness t of the coating layer to the magnetic beads diameter D50, is from 0.0001 to 0.05, and a Vickers hardness of the magnetic metal powder is 100 or more."

The patent was filed on Feb. 14, 20...