Inventor

QIN LIANGSHENG

CN2 patents

Patents

2 patents

US12137730B2Nov 12, 2024

Cooling cigarette filter and smoking product

CHINA TOBACCO HUNAN IND CO LTD0 citations56

US12150474B2Nov 26, 2024

Cooling cigarette filter and cigarette

CHINA TOBACCO HUNAN IND CO LTD0 citations44