Inventor
KOTANIGAWA TAKASHI
JP6 patents
Patents
6 patentsUS10250348B2Apr 2, 2019
Optical transport system and resource optimization method
NIPPON TELEGRAPH & TELEPHONE2 citations71
US11942755B2Mar 26, 2024
Optical transmission system and filter penalty reduction method
NIPPON TELEGRAPH & TELEPHONE0 citations49
US11329445B2May 10, 2022
Optical amplifier, optical transmission system, and optical cable failure part measurement method
NIPPON TELEGRAPH & TELEPHONE0 citations49
US10230457B2Mar 12, 2019
Framer and framing method
NIPPON TELEGRAPH & TELEPHONE0 citations40
US10181921B2Jan 15, 2019
Framer and framing method
NIPPON TELEGRAPH & TELEPHONE0 citations40
US10063321B2Aug 28, 2018
Framer, optical transmission device, and framing method
NIPPON TELEGRAPH & TELEPHONE0 citations40