ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,379,533, issued on Aug. 5, was assigned to MITUTOYO Corp. (Kanagawa, Japan).
"Grating part and manufacturing method thereof" was invented by Toshihiko Aoki (Kanagawa, Japan) and Kosaku Miyake (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A grating part includes a first transparent substrate having an optical grating on a surface thereof, a second transparent substrate having an optical grating on a surface thereof, and a spacer positioned between the first transparent substrate and the second transparent substrate, the spacer bonding the first transparent substrate and the second transparent substrate."
The patent was filed on Aug. 11,...