David H. Yao

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Essex, VT, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for controlling extrusions in aluminum metal lines and the d...
- Patent number 6,420,263
- Issue date Jul 16, 2002
- International Business Machines Corporation
- Roger W. Cheek
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Method of annealing copper metallurgy
- Patent number 6,339,022
- Issue date Jan 15, 2002
- International Business Machines Corporation
- Arne W. Ballantine
- H01 - BASIC ELECTRIC ELEMENTS