US Patent Issued to Meta Platforms Technologies on Oct. 27 for "Gray-tone resists and processes" (Washington Inventors)

ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,775,210, issued on Oct. 27, was assigned to Meta Platforms Technologies LLC (Menlo Park, Calif.).

"Gray-tone resists and processes" was invented by Keren Zhang (Woodinville, Wash.), Xu Zhang (Lynnwood, Wash.), Feyza Dundar Arisoy (Redmond, Wash.), Joshua Andrew Kaitz (Woodinville, Wash.), Ankit Vora (Bothell, Wash.), Elliott Franke (Woodinville, Wash.) and John Sporre (Bothell, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein are techniques for fabricating a straight or slanted surface-relief grating with a uniform or non-uniform grating depth. According to certain embodiments, a gray-tone photoresist includes a novolac resin, a dia...