Inventor

ZHAO ZHENGGANG

CN5 patents

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

GUANGZHOU SINOGEN PHARMACEUTICAL CO LTD

2 patents

US12478664B2Nov 25, 2025

Use of genetically engineered strain VNP20009-M in preventing and treating cancer metastasis

GUANGZHOU SINOGEN PHARMACEUTICAL CO LTD0 citations56

US11318172B2May 3, 2022

Use of genetically engineered bacterium of attenuated Salmonella typhimurium in for treating liver cancer

GUANGZHOU SINOGEN PHARMACEUTICAL CO LTD0 citations56

NANJING SINOGEN BIOTECH & PHARMACEUTICAL INC

1 patent

US9439934B1Sep 13, 2016

Application of an attenuated salmonella typhimurium, its genetically engineered bacterium in preparing drugs for the treatment of prostate cancer

NANJING SINOGEN BIOTECH & PHARMACEUTICAL INC2 citations56

GUANGZHOU HUAZHEN PHARMACEUTICAL CO LTD

1 patent

US12441732B2Oct 14, 2025

Potassium salt crystal form B of phosphodiesterase type 5 inhibitor, and preparation method and use therefor

GUANGZHOU HUAZHEN PHARMACEUTICAL CO LTD0 citations46

SHENZHEN HANHUI PHARMACEUTICAL TECH CO LTD

1 patent

US12569484B2Mar 10, 2026

Use of phosphodiesterase 5 inhibitor in preparation of medicament for resisting fibrotic diseases

SHENZHEN HANHUI PHARMACEUTICAL TECH CO LTD0 citations45