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Grinding pad
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Patent number D1004393
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Issue date Nov 14, 2023
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EHWA DIAMOND INDUSTRIAL CO., LTD.
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Jang Hyuk Ahn
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D08 - Tools and hardware
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-
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CMP pad conditioner
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Patent number 10,166,653
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Issue date Jan 1, 2019
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EHWA DIAMOND INDUSTRIAL CO., LTD.
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Seh Kwang Lee
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B24 - GRINDING POLISHING
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Grinding tool
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Patent number 9,925,645
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Issue date Mar 27, 2018
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EHWA DIAMOND INDUSTRIAL CO., LTD.
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Young-Choul Song
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B24 - GRINDING POLISHING
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CMP apparatus
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Patent number 9,421,668
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Issue date Aug 23, 2016
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EHWA DIAMOND INDUSTRIAL CO., LTD.
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Seh Kwang Lee
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B24 - GRINDING POLISHING
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Reaming shell for mining
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Patent number 9,115,551
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Issue date Aug 25, 2015
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EHWA Diamond Industrial Co., Ltd.
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Ki-Ho Kim
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E21 - EARTH DRILLING MINING
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Drill bit
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Patent number 8,801,342
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Issue date Aug 12, 2014
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EHWA Diamond Industrial Co., Ltd.
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Jae-Hyun Hong
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Diamond tool
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Patent number 8,028,687
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Issue date Oct 4, 2011
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Ehwa Diamond Industrial Co., Ltd.
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Soo-Kwang Kim
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Tip for a grinding wheel
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Patent number D563440
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Issue date Mar 4, 2008
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Ehwa Diamond Industrial Co., Ltd.
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Jang Hyuk Ahn
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D15 - Machines not elsewhere specified
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Tip for a grinding wheel
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Patent number D563186
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Issue date Mar 4, 2008
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Ehwa Diamond Industrial Co., Ltd.
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Jang Hyuk Ahn
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D08 - Tools and hardware
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Grinding wheel shank
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Patent number D559649
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Issue date Jan 15, 2008
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Ehwa Diamond Industrial Co., Ltd.
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Jang Hyuk Ahn
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D08 - Tools and hardware
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Grinding wheel shank
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Patent number D554671
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Issue date Nov 6, 2007
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Ehwa Diamond Industrial Co., Ltd.
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Jang Hyuk Ahn
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D15 - Machines not elsewhere specified
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Metal-cutting saw blade
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Patent number D526553
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Issue date Aug 15, 2006
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Ehwa Diamond Industrial Co., Ltd.
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Tae Min Um
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D08 - Tools and hardware
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GRINDING TOOL
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Publication number 20160221155
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Publication date Aug 4, 2016
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EHWA DIAMOND INDUSTRIAL CO., LTD.
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Young-Choul SONG
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B24 - GRINDING POLISHING
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CMP APPARATUS
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Publication number 20150140900
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Publication date May 21, 2015
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Samsung Electronics Co., Ltd.
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Seh Kwang Lee
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B24 - GRINDING POLISHING
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CMP PAD CONDITIONER
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Publication number 20140154960
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Publication date Jun 5, 2014
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EHWA DIAMOND INDUSTRIAL. CO., LTD.
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Seh Kwang Lee
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B24 - GRINDING POLISHING
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DRILL BIT
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Publication number 20110033253
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Publication date Feb 10, 2011
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EHWA DIAMOND INDUSTRIAL CO., LTD.
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Jae-Hyun Hong
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Wave saw blade
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Publication number 20040242138
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Publication date Dec 2, 2004
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EHWA DIAMOND INDUSTRIAL CO., LTD.
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Seung Weon Lee
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B28 - WORKING CEMENT, CLAY, OR STONE