Inventor

ZHANG CHENGJUN

CN4 patents

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

NINGBO SHANGJIN AUTOMATION TECH CO LTD

2 patents

US11420287B2Aug 23, 2022

Wire clamping system for fully automatic wire bonding machine

NINGBO SHANGJIN AUTOMATION TECH CO LTD1 citations55

US12188604B2Jan 7, 2025

Gantry motion platform

NINGBO SHANGJIN AUTOMATION TECH CO LTD0 citations41

A O SMITH CHINA WATER HEATER CO LTD

1 patent

US12398923B2Aug 26, 2025

Condensing heat exchanger and water heater having same

A O SMITH CHINA WATER HEATER CO LTD0 citations43

SMITH CORP A O

1 patent

US10712022B2Jul 14, 2020

Constant pressure switch apparatus and water heating system

SMITH CORP A O0 citations29