Inventor

DOUCHI SADAO

JP6 patents

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

NIPPON STEEL CORP

3 patents

US11719365B2Aug 8, 2023

NIPPON STEEL & SUMITOMO METAL CORP

2 patents

US10495241B2Dec 3, 2019

Threaded joint for steel pipe

NIPPON STEEL & SUMITOMO METAL CORP3 citations70

US10883319B2Jan 5, 2021

Threaded connection for steel pipe

NIPPON STEEL & SUMITOMO METAL CORP0 citations50

VALLOUREC OIL & GAS FRANCE

1 patent

US11473373B2Oct 18, 2022

Threaded connection for tubular component

VALLOUREC OIL & GAS FRANCE2 citations65