P

Inventor

SUGAWARA TOSHIHIRO

JP6 patents
⚠️ This page may combine multiple inventors who share the name “SUGAWARA TOSHIHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ISHIKAWAJIMA HARIMA HEAVY IND

3 patents
US5329785AJul 19, 1994

Refractory element

ISHIKAWAJIMA HARIMA HEAVY IND14 citations79
US5390729AFeb 21, 1995

Refractory element

ISHIKAWAJIMA HARIMA HEAVY IND5 citations71
US5379610AJan 10, 1995

Refractory element

ISHIKAWAJIMA HARIMA HEAVY IND2 citations60

ADVANTEST CORP

3 patents
US11762072B2Sep 19, 2023

Optical testing apparatus and method of testing optical measuring instrument

ADVANTEST CORP3 citations71
US12321054B2Jun 3, 2025

Optical testing apparatus

ADVANTEST CORP0 citations50
US11635374B2Apr 25, 2023

Optical testing apparatus

ADVANTEST CORP0 citations50