Inventor

NAKAGAWA TSUTOMU

JP24 patents

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

NAKAGAWA TSUTOMU

MITSUBISHI ELECTRIC CORP

Semiconductor device

Semiconductor device

Semiconductor thyristor device with recess

Method of making thyristor with a high tolerable bias voltage

Thyristor with abrupt anode emitter junction

RICOH KK

Developing device in image-forming device

Image forming apparatus and developing device

Image forming system having charge balancing system

Image formation apparatus

DAINIPPON PRINTING CO LTD

Color monitor white chromaticity measuring device

Color modification utilizing two coefficients

HITACHI KOKI KK

Electrophotographic apparatus

POWEREX INC

Gate structure of thyristor

LINTEC CORP

Membrane for separating an organic solvent from a water-organic solvent mixture

ASAHI CHEMICAL IND

Surface-hydrophilic, highly selective semipermeable membrane

DAI NIPPON INSATSU KAUSHIKI KA

Apparatus for color modification adapted to represent the pictorial image

DIRECTOR GENEREAL OF AGENCY OF

Catalyst membrane

RICOH CO LTD

Development apparatus having two developer bearers and two development chambers

RICOH PRINTING SYS LTD

Fixing device including heating roller and pressure roller

NAKAGAWA TSUTOMU

Roller bearing

ASAHI KASEI CHEMICALS CORP

Water-absorbent polymer and process for producing the same

AGENCY IND SCIENCE TECHN

Translucent film and method for manufacturing the same

NTN TOYO BEARING CO LTD

Rolling bearing

FUKAMI RINO

Rolling bearing