Inventor
FUKUDA SEIJI
JP13 patents
⚠️ This page may combine multiple inventors who share the name “FUKUDA SEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TORAY INDUSTRIES
3 patentsUS5644670AJul 1, 1997
Broad bandwidth optical fibers, jacketed optical fibers and optical fiber cords
TORAY INDUSTRIES68 citations94
US5220451AJun 15, 1993
Second-order nonlinear optical device
TORAY INDUSTRIES17 citations72
US10774190B2Sep 15, 2020
Ion-conducting membrane production method and production device
TORAY INDUSTRIES0 citations42
NEC CORP
3 patentsUS4876686AOct 24, 1989
Fault detection signal transmission system
NEC CORP10 citations73
US5481547AJan 2, 1996
SDH radio communication system and transmitter/receiver equipment therefor
NEC CORP11 citations72
US7551642B2Jun 23, 2009
Digital modulating and demodulating device which is compatible with both PDH and SDH signals by dividing input signal in multiple directions and combining input signals from multiple directions with matrix switching unit
NEC CORP4 citations62
SHINETSU CHEMICAL CO
2 patentsUS6326454B1Dec 4, 2001
Composition comprising condensation product of dimer of 2,3-dihydroxynaphthalene and formaldehyde for polymerization
SHINETSU CHEMICAL CO5 citations73
US6121390ASep 19, 2000
Process of producing vinyl chloride polymer by using condensation product of dimer of 2,3-dihydroxynaphthalene and formaldehyde
SHINETSU CHEMICAL CO6 citations73