US Patent Issued to Northern Digital on Dec. 16 for "Retro-reflective disc target having exposed retro-reflective beads" (Canadian Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,509, issued on Dec. 16, was assigned to Northern Digital Inc. (Waterloo, Canada).

"Retro-reflective disc target having exposed retro-reflective beads" was invented by Larry Chen (Fergus, Canada), David Willms (Waterloo, Canada), Athanasios Tommy Balkos (Waterloo, Canada) and Shaulaine White (Cambridge, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A retro-reflective marker comprising a bare retro-reflective layer; a protective layer with a near-infrared (NIR) wavelength specific anti-reflective coating; and a border with an NIR absorbent coating."

The patent was filed on June 24, 2022, under Application No. 17/848,440.

*For further informa...