Inventor

DU HAIYANG

CN2 patents

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

CHINA PETROLEUM & CHEM CORP

1 patent

US12252986B2Mar 18, 2025

Steerable drilling device

CHINA PETROLEUM & CHEM CORP0 citations43

SUZHOU BETTER TECH CO LTD

1 patent

US10715002B2Jul 14, 2020

Ammonia-resistant motor used for closed-type refrigerating compressor

SUZHOU BETTER TECH CO LTD0 citations30