Inventor

QIU ZHENGJUN

CN3 patents

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

Shenzhen grandsun electronic co ltd

1 patent

USD904998SDec 15, 2020

Audio device

Shenzhen grandsun electronic co ltd21 citations92

SHENZHEN SEA STAR SOUNDS CO LTD

1 patent

US11539824B2Dec 27, 2022

Split mobile phone radiator

SHENZHEN SEA STAR SOUNDS CO LTD2 citations58

UNIV ZHEJIANG

1 patent

US11221320B2Jan 11, 2022

Method and apparatus for measuring leaf nitrogen content

UNIV ZHEJIANG0 citations50