Inventor

PAN YANHUI

CN19 patents

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

PAN YANHUI

INFRASTRUCTURE RENEWAL INST OF SOUTHERN CHINA

Trenchless integrative repair method for concrete drainage pipeline with cracking, corrosion and subsidence

Rapid-hardening underground pipeline grouting repair polymer and preparing method

Trenchless methods for forming curved hole channel with steel sleeve and pipeline lifting

Support tool and back-pressure grouting device for leakage repair of inspection well and repair method thereof

Assembled recyclable rectangular working well with preset detachable door opening and construction method thereof

Detecting and repairing method for external diseases of buried drainage pipeline

Rectangular working well with preset pipe jacking hole and sliding back wall in water-rich stratum and construction method thereof

In-service and trenchless repair method for disconnection of drainage pipeline

Thin-slotting lifting synchronous grouting device and its usage method

Track-type jet grouting integrated system

WELEAD INFRASTRUCTURE ENGINEERING TECH ZHENGZHOU LTD

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

Trenchless rehabilitation device for disconnects on large-diameter concrete drainage pipe and method thereof

Trenchless rehabilitation system for deformation of large diameter HDPE pipelines and method thereof

In-service repair method combining externally bonded pre-stressed FRP and polymer grouting for PCCP with broken wire

UNIV ZHENGZHOU

Polymer expanding material used in infiltration or seepage watery environment and preparation method thereof

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

Pipeline radar and television inspection robot

SAFEKEY ENGINEERING TECH ZHENGZHOU LTD

Silicate-modified polymer grouting material for leakage plugging

HENAN POLYTECH INFRASTRUCTURE REHABILITATION LTD

Polymer grouting method for constructing vertical supporting system