GENEVA, July 29 -- SUMITOMO ELECTRIC INDUSTRIES, LTD. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-shi, Osaka5410041), 住友電気工業株式会社 (大阪府大阪市中央区北浜四丁目５番３３号) filed a patent application (PCT/JP2025/001031) for "OPTICAL FIBER PREFORM, OPTICAL FIBER, AND METHOD FOR PRODUCING OPTICAL FIBER PREFORM" on Jan 15, 2025. With publication no. WO/2025/154738, the details related to the patent application was published on Jul 24, 2025.
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the ...