Inventor

HISHIKAWA YOSHIFUMI

JP4 patents

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

SUMITOMO ELECTRIC INDUSTRIES

2 patents

US6206583B1Mar 27, 2001

Optical fiber fusion splicer with communication device

SUMITOMO ELECTRIC INDUSTRIES66 citations93

US10523317B2Dec 31, 2019

Measurement system and measurement method

SUMITOMO ELECTRIC INDUSTRIES6 citations71

SUMITOMO ELECTRIC OPTIFRONTIER CO LTD

2 patents

US11965801B2Apr 23, 2024

Measurement system

SUMITOMO ELECTRIC OPTIFRONTIER CO LTD0 citations50

US12111224B2Oct 8, 2024

Optical transmission path inspecting system, and optical transmission path inspecting device

SUMITOMO ELECTRIC OPTIFRONTIER CO LTD0 citations48