Yunju Ra

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Irvine, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Inductively coupled plasma generation system with a parallel antenn...
- Patent number 7,871,490
- Issue date Jan 18, 2011
- Top Engineering Co., Ltd.
- Harqkyun Kim
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Method and apparatus for clamping a substrate
- Patent number 5,894,400
- Issue date Apr 13, 1999
- WJ Semiconductor Equipment Group, Inc.
- Andrew J. Graven
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Inductively coupled plasma generation system with a parallel antenn...
- Publication number 20060124059
- Publication date Jun 15, 2006
- Harqkyun Kim
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Inductively coupled plasma generation system with a parallel antenn...
- Publication number 20040182319
- Publication date Sep 23, 2004
- Harqkyun Kim
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...