Chenhai ZHAO

Follow

Person

Beihai (GX), CN

People

Patents Grantslast 30 patents

Information Patent Grant
Ink cartridge having inner container and processing method therefor
- Patent number 11,440,328
- Issue date Sep 13, 2022
- SPEED INFOTECH (BEIHAI) COMPANY LIMITED
- Chenhai Zhao
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Patents Applicationslast 30 patents

Information Patent Application
INK CARTRIDGE
- Publication number 20240424802
- Publication date Dec 26, 2024
- SPEED INFOTECH (BEIHAI) COMPANY LIMITED
- Chenhai ZHAO
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
INK CARTRIDGE PACKAGING ASSEMBLY, AND INK CARTRIDGE ASSEMBLY
- Publication number 20240351339
- Publication date Oct 24, 2024
- SPEED INFOTECH (BEIHAI) COMPANY LIMITED
- Chenhai ZHAO
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
INK CARTRIDGE HAVING INNER CONTAINER AND PROCESSING METHOD THEREFOR
- Publication number 20220143983
- Publication date May 12, 2022
- SPEED INFOTECH (BEIHAI) COMPANY LIMITED
- Chenhai ZHAO
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS