Inventor

KATSUYAMA TOSHIO

JP41 patents

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

KATSUYAMA TOSHIO

HITACHI LTD

Semiconductor optical device with nanowhiskers

Semiconductor device using whiskers

Optical fiber and method of producing the same

Optical switch including bypass waveguide

Member for infrared ray transmission

Optical quantum interference device/optical computer and method of modulating light using same

Optical quantum interference device and method of modulating light using same

Glass material for optical fibers used in infrared region

Temperature-compensated magnetic field measuring instrument

Method for producing mother rods for optical fibers

Dispersion compensator and optical transmission system using same

Optical modulating device utilizing polariton substance

Method of producing optical fiber preform

Optical device

Optical devices and optical integrated circuits

Polarization plane maintaining optical fiber fabricating method

Single-mode-transmission optical fiber and a method of manufacturing the same

Optical fiber and method for producing the same

Method of producing optical fiber

Optical waveguides and optical devices with optical waveguides

Intercalation compound and generator of coherent radiation using the same

Micro-spectroscopic measuring device and micro-chemical system

Semiconductor device with high speed signal transmission arrangement utilizing light

Optical D.C. electric-field measuring apparatus with optic sensing means exhibiting both electrooptic and photoelectric effects

Optical gyroscope with large propagation constant difference

Method and apparatus for dynamic observation of specimen

Micro sensor device

NATIONAL UNIV CORPORATION UNIV OF FUKUI

Multiplexer

Multiplexer, image projection apparatus using the multiplexer and image projection system

Multiplexer

Multiplexer, image projection apparatus using the multiplexer and image projection system

Two-dimensional optical scanning mirror device, manufacturing method for same, two-dimensional optical scanner and image projector

Two-dimensional optical scanning mirror device, manufacturing method for same, two-dimensional optical scanner and image projector

UNIV FUKUI

Image display device using retinal scanning display unit and image display system

Image generating device and image generating method for detecting position of pupil

Light beam emission device and light beam projection device equipped therewith

Optical multiplexer and manufacturing method for the same

Optical multiplexer and optical multiplexing method

Image display device using retinal scanning display unit and method thereof

HITACHI CABLE

Photo semiconductor device having a multi-quantum well structure

SEIREN KST CORP

Optical multiplexer reduced in background light