GENEVA, Oct. 22 -- NTT, INC. filed a patent application (JP2025/014797) for “OPTICAL MULTIPLEXING/DEMULTIPLEXING CIRCUIT, WAVELENGTH FILTER, AND METHOD FOR MANUFACTURING OPTICAL MULTIPLEXING/DEMULTIPLEXING CIRCUIT”. With publication no. WO/2026/220502, here are the other details related to the patent application:
Kind: Initial Publication with ISR [A1]
IPC: G02B 6/125
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization (WIPO).
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