Zhefu Zhang

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Collapsible wheelchair
- Patent number 12,303,441
- Issue date May 20, 2025
- SHANGHAI BANGBANG ROBOTICS CO., LTD
- Jianguo Li
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Electric wheelchair
- Patent number D1069656
- Issue date Apr 8, 2025
- Jianguo Li
- D12 - Transportation
Information Patent Grant
Wheelchair
- Patent number D1049943
- Issue date Nov 5, 2024
- Jiangsu BangBang Intelligent Technology Co., Ltd.
- Jianguo Li
- D12 - Transportation
Information Patent Grant
Collapsible wheelchair
- Patent number 12,016,804
- Issue date Jun 25, 2024
- SHANGHAI BANGBANG ROBOTICS CO., LTD
- Jianguo Li
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Foldable electric wheelchair
- Patent number D998509
- Issue date Sep 12, 2023
- Jianguo Li
- D12 - Transportation

Patents Applicationslast 30 patents

Information Patent Application
VEHICLE AND METHOD OF USE THEREOF
- Publication number 20250205095
- Publication date Jun 26, 2025
- Shanghai Bangbang Robotics Co., Ltd.
- Jianguo LI
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
COLLAPSIBLE WHEELCHAIR
- Publication number 20240299223
- Publication date Sep 12, 2024
- Shanghai Bangbang Robotics Co., Ltd.
- Jianguo LI
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
COLLAPSIBLE WHEELCHAIR
- Publication number 20240293275
- Publication date Sep 5, 2024
- Shanghai Bangbang Robotics Co., Ltd.
- Jianguo LI
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
COLLAPSIBLE WHEELCHAIR
- Publication number 20230085749
- Publication date Mar 23, 2023
- SHANGHAI BANGBANG ROBOTICS CO, LTD.
- Jianguo LI
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE