Yuanfeng Ma

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Shenzhen, CN

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Patents Grantslast 30 patents

Information Patent Grant
High speed barrel polishing device
- Patent number 9,550,266
- Issue date Jan 24, 2017
- International Business Machines Corporation
- Yuanfeng Ma
- B24 - GRINDING POLISHING
Information Patent Grant
High speed barrel polishing device
- Patent number 8,932,108
- Issue date Jan 13, 2015
- International Business Machines Corporation
- Yuanfeng Ma
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
High Speed Barrel Polishing Device
- Publication number 20150099435
- Publication date Apr 9, 2015
- International Business Machines Corporation
- Yuanfeng Ma
- B24 - GRINDING POLISHING
Information Patent Application
HIGH SPEED BARREL POLISHING DEVICE
- Publication number 20110256808
- Publication date Oct 20, 2011
- International Business Machines Corporation
- Yuanfeng Ma
- B24 - GRINDING POLISHING