Zhijia REN

Follow

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Scroll compressor with two step inverter control
- Patent number 11,603,839
- Issue date Mar 14, 2023
- Hitachi Industrial Equipment Systems Co., Ltd.
- Zhijia Ren
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Air compressing apparatus and control method
- Patent number 11,193,482
- Issue date Dec 7, 2021
- Hitachi Industrial Equipment Systems Co., Ltd.
- Zhijia Ren
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Fluid compression system and control device therefor
- Patent number 10,514,026
- Issue date Dec 24, 2019
- Hitachi Industrial Equipment Systems Co., Ltd.
- Zhijia Ren
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

Information Patent Application
GAS COMPRESSION SYSTEM AND CONTROL METHOD THEREOF
- Publication number 20240026874
- Publication date Jan 25, 2024
- Hitachi Industrial Equipment Systems Co., Ltd.
- Zhijia REN
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Scroll Compressor
- Publication number 20190345935
- Publication date Nov 14, 2019
- Hitachi Industrial Equipment Systems Co., Ltd.
- Zhijia REN
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Air Compressing Apparatus and Control Method
- Publication number 20180223832
- Publication date Aug 9, 2018
- Hitachi Industrial Equipment Systems Co., Ltd.
- Zhijia REN
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Fluid Compression System and Control Device Therefor
- Publication number 20150370265
- Publication date Dec 24, 2015
- HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.
- Zhijia REN
- G05 - CONTROLLING REGULATING