Heung Sub Song

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Daejon, KR

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Patents Grantslast 30 patents

Information Patent Grant
Sintering method for tungsten-nickel-manganese type heavy alloy
- Patent number 5,970,307
- Issue date Oct 19, 1999
- Agency for Defense Development
- Moon Hee Hong
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Fabrication method for tungsten heavy alloy
- Patent number 5,956,558
- Issue date Sep 21, 1999
- Agency for Defense Development
- Moon Hee Hong
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Irregular shape change of tungsten/matrix interface in tungsten bas...
- Patent number 5,956,559
- Issue date Sep 21, 1999
- Agency for Defense Development
- Heung Sub Song
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Repeated sintering of tungsten based heavy alloys for improved impa...
- Patent number 5,294,269
- Issue date Mar 15, 1994
- Poongsan Corporation
- Young M. Lee
- B22 - CASTING POWDER METALLURGY