Inventor

KOYAMA KOICHI

JP19 patents

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

KOYAMA KOICHI

FUJI PHOTO FILM CO LTD

Functional organic thin film and process for producing the same

Functional organic thin film and method of manufacture thereof

Heat development with reducible dye releaser

Redox dye releasers o-sulfonamidophenol

Photographic element

Color photographic light-sensitive material

Heat developable color light-sensitive material with dye developers

Light-sensitive material with compounds reactive with dye developers

Benzoxazole derivative intermediates for synthesis of dye releasing redox compounds

o-Aminophenol compounds

Color image forming dye bleach process

Photographic light-sensitive material with nucleophilic displacement dye releasers

SUMITOMO ELECTRIC INDUSTRIES

Optical device, optical processing device, and method of producing the optical device

Optical device, optical processing device, method for fabricating optical device

Optical connecting device, light processing apparatus, method for fabricating optical connecting device

Semiconductor light emitting apparatus, stem part

Semiconductor device having a protruding interposer edge face

JAPAN SCIENCE & TECH CORP

Highly sensitive light reception element

FUJIREBIO KK

Phenytoin derivatives