Hae Jin Hwang

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Patents Grantslast 30 patents

Information Patent Grant
High-performance lubricant oil
- Patent number 5,985,802
- Issue date Nov 16, 1999
- Koji Watari
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Ceramic composite
- Patent number 5,854,157
- Issue date Dec 29, 1998
- Agency of Industrial Science and Technology
- Hae Jin Hwang
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES