Inventor
SEKI TAKESHI
JP25 patents
⚠️ This page may combine multiple inventors who share the name “SEKI TAKESHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON TELEGRAPH & TELEPHONE
14 patentsUS12316383B2May 27, 2025
Wavelength cross connect device, multiband transmission system, and multiband transmission method
NIPPON TELEGRAPH & TELEPHONE2 citations72
US12244346B2Mar 4, 2025
Wavelength cross connect device and wavelength cross connect method
NIPPON TELEGRAPH & TELEPHONE3 citations72
US11979226B2May 7, 2024
Wavelength cross connect device and wavelength cross connect method
NIPPON TELEGRAPH & TELEPHONE2 citations70
US11750317B2Sep 5, 2023
Wavelength cross connect device and cross connect connection method
NIPPON TELEGRAPH & TELEPHONE1 citations61
US12207030B2Jan 21, 2025
Optical node device, optical transport network system, optical path trace method and program
NIPPON TELEGRAPH & TELEPHONE0 citations60
US11525971B2Dec 13, 2022
Insertion/removal error prevention system
NIPPON TELEGRAPH & TELEPHONE0 citations54
US12581223B2Mar 17, 2026
Optical path route design device and optical path route design method
NIPPON TELEGRAPH & TELEPHONE0 citations51
US11722235B2Aug 8, 2023
Optical branch insertion device and optical branch insertion method
NIPPON TELEGRAPH & TELEPHONE0 citations51
US11677489B2Jun 13, 2023
Wavelength cross connect device, branch ratio variable method, and program
NIPPON TELEGRAPH & TELEPHONE0 citations51
US11528080B2Dec 13, 2022
Optical transmission system and failure diagnosis method for optical transmission system
NIPPON TELEGRAPH & TELEPHONE0 citations51
US11424824B2Aug 23, 2022
OSNR spectrum estimation apparatus, OSNR spectrum estimation method, and program
NIPPON TELEGRAPH & TELEPHONE0 citations51
US11824583B2Nov 21, 2023
Cyclic wavelength band replacement device, multi-band transmission system, and cyclic wavelength band replacement method
NIPPON TELEGRAPH & TELEPHONE0 citations49
US11696056B2Jul 4, 2023
Optical transmission system and optical transmission method
NIPPON TELEGRAPH & TELEPHONE0 citations48
US9749061B2Aug 29, 2017
Digital signal processing device
NIPPON TELEGRAPH & TELEPHONE0 citations40
SEKI TAKESHI
3 patentsUS8085322B2Dec 27, 2011
Defect pixel correction circuit, image processing system using the same, and defect pixel correcting method
SEKI TAKESHI3 citations59
US8218891B2Jul 10, 2012
Filtering circuit, filter processing method, image pickup element circuit and camera
SEKI TAKESHI2 citations51
US8194984B2Jun 5, 2012
Image processing system that removes noise contained in image data
SEKI TAKESHI1 citations48