Ricky Ruffin

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Gaithersburg, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Oxygen free plasma stripping process
- Patent number 6,638,875
- Issue date Oct 28, 2003
- Axcelis Technologies, Inc.
- Qingyan Han
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for detecting an endpoint for an oxygen free plasma process
- Patent number 6,492,186
- Issue date Dec 10, 2002
- Eaton Corporation
- Qingyan Han
- G01 - MEASURING TESTING
Information Patent Grant
Oxygen free plasma stripping process
- Patent number 6,281,135
- Issue date Aug 28, 2001
- Axcelis Technologies, Inc.
- Qingyuan Han
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Oxygen free plasma stripping process
- Publication number 20010027016
- Publication date Oct 4, 2001
- Axcelis Technologies, Inc.
- Qingyan Han
- H01 - BASIC ELECTRIC ELEMENTS