ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,536,641, issued on Jan. 27, was assigned to DAIICHI JITSUGYO VISWILL Co. LTD. (Osaka, Japan).

"Visual inspection system for annular product" was invented by Koji Matsui (Osaka, Japan) and Koichi Sasaki (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A visual inspection system includes a conveyance device conveying an inspection target on a glass plate in a rotating direction of the glass plate, an outer-side-surface image capturing device capturing an image of the inspection target at an outer-side-surface image capturing position, and a judgment device judging based on the captured image whether the inspection target is defective in appear...