US Patent Issued to DISCO on Jan. 20 for "Protective film substance for laser processing and method of processing workpiece" (Japanese Inventors)

ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,532,684, issued on Jan. 20, was assigned to DISCO Corp. (Tokyo).

"Protective film substance for laser processing and method of processing workpiece" was invented by Senichi Ryo (Tokyo), Yuki Ikeda (Tokyo), Yukinobu Ohura (Tokyo) and Toshiyuki Yoshikawa (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A protective film substance for laser processing includes a solution including a water-soluble resin, an organic solvent, and a light absorbent. The solution has an absorbance, i.e., an absorbance converted for a solution diluted 200 times, equal to 0.05 or more per an optical path length of 1 cm at a wavelength of 532 nm. Alternatively, the protective...