Joon-Ho Chang

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Kyungki-do, KR

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Patents Grantslast 30 patents

Information Patent Grant
Cutting segment for cutting tool and cutting tools
- Patent number 7,954,483
- Issue date Jun 7, 2011
- Ehwa Diamond Industrial Co., Ltd.
- Soo-Kwang Kim
- B24 - GRINDING POLISHING
Information Patent Grant
Cutting segment for diamond tool and diamond tool having the segment
- Patent number 7,661,419
- Issue date Feb 16, 2010
- Ehwa Diamond Industrial Co., Ltd.
- Soo-Kwang Kim
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
Cutting Segment of Cutting Tool and Cutting Tool
- Publication number 20080219783
- Publication date Sep 11, 2008
- EHWA DIAMOND INDUSTRIAL CO., LTD.
- Soo-Kwang Kim
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Cutting Segment for Cutting Tool and Cutting Tools
- Publication number 20080202488
- Publication date Aug 28, 2008
- EHWA DIAMOND INDUSTRIAL CO., LTD.
- Soo-Kwang Kim
- B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
Information Patent Application
Cutting Segment For Diamond Tool and Diamond Tool Having the Segment
- Publication number 20080171505
- Publication date Jul 17, 2008
- Ehwa Diamond Industrial Co., Ltd.
- Soo-Kwang Kim
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR