Xiangyun CHANG

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Patents Grantslast 30 patents

Information Patent Grant
Floating grid electron source
- Patent number 9,196,449
- Issue date Nov 24, 2015
- FAR-TECH, Inc.
- Xiangyun Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Photocathode enhancement system
- Patent number 9,159,517
- Issue date Oct 13, 2015
- FAR-TECH, Inc.
- Xiangyun Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Multi-dimensional photocathode system
- Patent number 8,907,297
- Issue date Dec 9, 2014
- FAR-TECH, Inc.
- Xiangyun Chang
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
PHOTOCATHODE ENHANCEMENT SYSTEM
- Publication number 20140152175
- Publication date Jun 5, 2014
- FAR-TECH, INC.
- Xiangyun CHANG
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MULTI-DIMENSIONAL PHOTOCATHODE SYSTEM
- Publication number 20140152176
- Publication date Jun 5, 2014
- FAR-TECH, INC.
- Xiangyun CHANG
- H01 - BASIC ELECTRIC ELEMENTS