GENEVA, Sept. 2 -- TOPPAN HOLDINGS INC. (5-1, Taito 1-chome, Taito-ku, Tokyo1100016), ＴＯＰＰＡＮホールディングス株式会社 (東京都台東区台東１丁目５番１号) filed a patent application (PCT/JP2025/002859) for "PHOTOCHROMIC SHEET" on Jan 29, 2025. With publication no. WO/2025/177792, the details related to the patent application was published on Aug 28, 2025.
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization (WIPO).
Inventor(s):...