Jianshe Ma

Follow

Person

Beijing, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Multilevel read-only optical disk and method for producing the same
- Patent number 7,680,024
- Issue date Mar 16, 2010
- Shanghai Xiangzhang Electronics Co., Ltd.
- Duanyi Xu
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Multilevel read-only optical disk and method for producing the same
- Publication number 20060203706
- Publication date Sep 14, 2006
- Duanyi Xu
- G11 - INFORMATION STORAGE