Jung-Jen A. Cheng

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Easton, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Lightweight tundish refractory composition
- Patent number 5,073,525
- Issue date Dec 17, 1991
- Quigley Company, Inc.
- Jung-Jen A. Cheng
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES