Inventor

KUWAHARA AKIO

JP5 patents

⚠️ This page may combine multiple inventors who share the name “KUWAHARA AKIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NIPPON TELEGRAPH & TELEPHONE

2 patents

US5357362AOct 18, 1994

Optical telephone using optical modulator

NIPPON TELEGRAPH & TELEPHONE28 citations90

US5259045ANov 2, 1993

Optical modulation method operable in an optical transmission path and an optical modulator using the optical modulation method

NIPPON TELEGRAPH & TELEPHONE14 citations71

NIPPON KAYAKU KK

2 patents

US7942962B2May 17, 2011

Monoazo metal complex, azo-type pigment dispersant, and pigment composition comprising the azo-type pigment dispersant

NIPPON KAYAKU KK0 citations40

US10167405B2Jan 1, 2019

Aqueous coloring agent dispersion for inkjet, ink composition, inkjet recording method, and colored body

NIPPON KAYAKU KK0 citations39

DAIICHI SEIYAKU SAITAMA

1 patent

US6039971AMar 21, 2000

Composition for skin patch preparation and process for preparing the same

DAIICHI SEIYAKU SAITAMA8 citations63