Yu-Kun Ma

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Taoyuan, TW

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Patents Grantslast 30 patents

Information Patent Grant
Multi-layer common lens arrangement for main focus lens of multi-be...
- Patent number 6,674,228
- Issue date Jan 6, 2004
- Chunghwa Pictures Tubes, Ltd.
- Hsing-Yao Chen
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Color CRT electron gun with asymmetric auxiliary beam passing aperture
- Patent number 6,153,970
- Issue date Nov 28, 2000
- Chunghwa Picture Tubes, Ltd.
- Hsing-Yao Chen
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Multi-layer common lens arrangement for main focus lens of multi-be...
- Publication number 20030189398
- Publication date Oct 9, 2003
- Hsing-Yao Chen
- H01 - BASIC ELECTRIC ELEMENTS