Inventor

ZHANG JIHUA

HK5 patents

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

UNIV HONG KONG SCIENCE & TECHN

2 patents

US5825023AOct 20, 1998

Auto focus laser encoder having three light beams and a reflective grating

UNIV HONG KONG SCIENCE & TECHN24 citations87

US5757491AMay 26, 1998

Laser interferometer system for straightness measurements

UNIV HONG KONG SCIENCE & TECHN23 citations87

DU PONT

1 patent

US12116210B2Oct 15, 2024

Systems and methods for manufacture of controlled release of agricultural cores

DU PONT0 citations58

PIONEER HI BRED INT

1 patent

US11864555B2Jan 9, 2024

Soil application of crop protection agents

PIONEER HI BRED INT0 citations44

TANG CHAOQIAN

1 patent

US9081339B2Jul 14, 2015

Fixing device and image formation device

TANG CHAOQIAN0 citations25