Duanyi Xu

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Beiging, CN

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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
Information Patent Grant
Photolithography system having multiple adjustable light sources
- Patent number 7,012,270
- Issue date Mar 14, 2006
- Tsinghua University
- Duanyi Xu
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING

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
Information Patent Application
Device and method for photoengraving integrated circuits
- Publication number 20030201399
- Publication date Oct 30, 2003
- Duanyi Xu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Multi-wavelength optical disc, apparatus and method for reading and...
- Publication number 20010038596
- Publication date Nov 8, 2001
- Duanyi Xu
- G11 - INFORMATION STORAGE