Wen Du

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Changsha, Hunan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Low-temperature smoking body and preparation method thereof
- Patent number 12,213,513
- Issue date Feb 4, 2025
- China Tobacco Hunan Industrial Co., Ltd.
- Qian Chen
- A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
Information Patent Grant
Cooling cigarette filter and cigarette
- Patent number 12,150,474
- Issue date Nov 26, 2024
- China Tobacco Hunan Industrial Co., Ltd.
- Wei Luo
- A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
Information Patent Grant
Cooling cigarette filter and smoking product
- Patent number 12,137,730
- Issue date Nov 12, 2024
- China Tobacco Hunan Industrial Co., Ltd.
- Wei Luo
- A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES

Patents Applicationslast 30 patents

Information Patent Application
LOW-HARM CIGARETTE SUBJECTED TO SMOKE ENHANCEMENT
- Publication number 20230068565
- Publication date Mar 2, 2023
- CHINA TOBACCO HUNAN INDUSTRIAL CO., LTD.
- Jianfu Liu
- A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
Information Patent Application
COOLING CIGARETTE FILTER AND SMOKING PRODUCT
- Publication number 20220079215
- Publication date Mar 17, 2022
- CHINA TOBACCO HUNAN INDUSTRIAL CO., LTD.
- Wei Luo
- A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
Information Patent Application
LOW-TEMPERATURE SMOKING BODY AND PREPARATION METHOD THEREOF
- Publication number 20210401030
- Publication date Dec 30, 2021
- CHINA TOBACCO HUNAN INDUSTRIAL CO., LTD.
- Qian Chen
- A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
Information Patent Application
COOLING CIGARETTE FILTER AND CIGARETTE
- Publication number 20210315268
- Publication date Oct 14, 2021
- CHINA TOBACCO HUNAN INDUSTRIAL CO., LTD.
- Wei Luo
- A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES