Inventor

ZHAO XIANFENG

CN10 patents

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

SAFEKEY ENGINEERING TECH ZHENGZHOU LTD

2 patents

US12152360B2Nov 26, 2024

Vibratory grouting drilling rig with auxiliary moving mechanism

SAFEKEY ENGINEERING TECH ZHENGZHOU LTD0 citations59

US12371869B2Jul 29, 2025

Grouting pipe with vibration function

SAFEKEY ENGINEERING TECH ZHENGZHOU LTD0 citations48

UNIV ZHENGZHOU

2 patents

US11499284B2Nov 15, 2022

Trough plate for constructing locked polymer anti-seepage wall and construction method of locked polymer anti-seepage wall

UNIV ZHENGZHOU0 citations56

US11598065B2Mar 7, 2023

Method for stabilizing and lifting channel boards by underwater grouting

UNIV ZHENGZHOU0 citations45

INFRASTRUCTURE RENEWAL INST OF SOUTHERN CHINA

2 patents

US11149399B2Oct 19, 2021

Track-type jet grouting integrated system

INFRASTRUCTURE RENEWAL INST OF SOUTHERN CHINA0 citations49

US11149400B2Oct 19, 2021

Thin-slotting lifting synchronous grouting device and its usage method

INFRASTRUCTURE RENEWAL INST OF SOUTHERN CHINA0 citations49

HENAN POLYTECH INFRASTRUCTURE REHABILITATION LTD

1 patent

US9045865B2Jun 2, 2015

Polymer grouting method for uplifting ballastless track of high-speed rail

HENAN POLYTECH INFRASTRUCTURE REHABILITATION LTD5 citations70

WELEAD INFRASTRUCTURE ENGINEERING TECH ZHENGZHOU LTD

1 patent

US11085166B2Aug 10, 2021

Composite slotting equipment combined static pressure and vibration of polymer anti-seepage wall and using method thereof

WELEAD INFRASTRUCTURE ENGINEERING TECH ZHENGZHOU LTD0 citations57

SHIJIAZHUANG PHARMA GROUP OUYI

1 patent

US7678921B2Mar 16, 2010

Method for the enantiomoeric separation of optical active amlodipine

SHIJIAZHUANG PHARMA GROUP OUYI0 citations39

MCDOWELL MATTHEW

1 patent

US8982412B2Mar 17, 2015

Systems and methods for facilitating reproduction of arbitrary colors

MCDOWELL MATTHEW0 citations33