Siwen WANG

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Ningbo, CN

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Patents Grantslast 30 patents

Information Patent Grant
Portable airtight box and box cover thereof
- Patent number 11,472,607
- Issue date Oct 18, 2022
- Ningbo Shijia Cleaning Tools Co., Ltd.
- Hui Hu
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents

Information Patent Application
CLEANING BRUSH AND KIT THEREOF
- Publication number 20240065495
- Publication date Feb 29, 2024
- Ningbo Shijia Cleaning Tools Co., Ltd.
- Siwen WANG
- A46 - BRUSHWARE
Information Patent Application
BRUSH HEAD MOUNTING STRUCTURE OF LIQUID SPRAYING BRUSH
- Publication number 20230232972
- Publication date Jul 27, 2023
- Ningbo Shijia Cleaning Tools Co., Ltd.
- Siwen WANG
- A46 - BRUSHWARE
Information Patent Application
PORTABLE AIRTIGHT BOX AND BOX COVER THEREOF
- Publication number 20220297898
- Publication date Sep 22, 2022
- Ningbo Shijia Cleaning Tools Co., Ltd.
- Hui HU
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL