Nun-Choi Jun

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Seoul, KR

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Patents Grantslast 30 patents

Information Patent Grant
Ring having improved weight, durability, damage resistance, shine a...
- Patent number 10,646,009
- Issue date May 12, 2020
- Quantum Jewelry (Hong Kong) Limited
- Jeong-su Song
- B22 - CASTING POWDER METALLURGY

Patents Applicationslast 30 patents

Information Patent Application
RING HAVING IMPROVED WEIGHT, DURABILITY, DAMAGE RESISTANCE, SHINE A...
- Publication number 20210010643
- Publication date Jan 14, 2021
- QUANTUM JEWELRY (HONG KONG) LIMITED
- Jeong-su Song
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
RING HAVING IMPROVED WEIGHT, DURABILITY, DAMAGE RESISTANCE, SHINE A...
- Publication number 20190174886
- Publication date Jun 13, 2019
- Jeong-su Song
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...