ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,449,309, issued on Oct. 21, was assigned to Applied Materials Inc. (Santa Clara, Calif.).

"Methods for detection using optical emission spectroscopy" was invented by Zuoming Zhu (Sunnyvale, Calif.), Martin A. Hilkene (Gilroy, Calif.), Avinash Shervegar (Karnataka, India), Surendra Singh Srivastava (Santa Clara, Calif.), Ala Moradian (Sunnyvale, Calif.), Shu-Kwan Lau (Sunnyvale, Calif.), Zhiyuan Ye (San Jose, Calif.), Enle Choo (Saratoga, Calif.), Flora Fong-Song Chang (Saratoga, Calif.), Bindusagar Marath Sankarathodi (San Jose, Calif.), Patricia M. Liu (Saratoga, Calif.), Errol Antonio C. Sanchez (Tracy, Calif.), Jenny Lin (Saratoga, Calif.), Nyi O. Myo (San Jose, Calif.) and Schuber...