Inventor

MA YONGHUA

CN3 patents

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

NINGBO WANHAI CARTRIDGE TECH CO LTD

2 patents

US12098773B2Sep 24, 2024

Core seat for a valve core and a valve core module

NINGBO WANHAI CARTRIDGE TECH CO LTD3 citations62

US12473985B2Nov 18, 2025

Valve core and a pull-out faucet thereof

NINGBO WANHAI CARTRIDGE TECH CO LTD1 citations51

CHINA PETROLEUM & CHEM CORP

1 patent

US11401356B2Aug 2, 2022

Olefin polymerization catalyst comprising cyclotriveratrylene and derivatives thereof

CHINA PETROLEUM & CHEM CORP0 citations46