US Patent Issued to QUADRATIC 3D on Feb. 17 for "Photoinitiators, photohardenable compositions, and methods for forming an object in a volume" (Ohio, Massachusetts Inventors)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,761, issued on Feb. 17, was assigned to QUADRATIC 3D INC. (Charlestown, Mass.).

"Photoinitiators, photohardenable compositions, and methods for forming an object in a volume" was invented by Samuel N. Sanders (Arlington, Mass.) and Emily M. Arndt (Akron, Ohio).

According to the abstract* released by the U.S. Patent & Trademark Office: "Photoswitchable photoinitiators comprising a naphthopyran molecule including one or more substituents wherein at least one substituent comprises a substituted or unsubstituted diaryl ketone moiety are disclosed. Photohardenable compositions and methods for forming an object in a volume and products thereof, which photohardenable compositions and me...