EHWA DIAMOND INDUSTRIAL CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B28D WORKING STONE OR STONE-LIKE MATERIALS 188
 
  
 
B24B MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING 858
 
  
 
B24D TOOLS FOR GRINDING, BUFFING, OR SHARPENING 624
 
  
 
B23D PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR 425
 
  
 
B23F MAKING GEARS OR TOOTHED RACKS 313
 
  
 
B25D PERCUSSIVE TOOLS 317
 
  
 
B23B TURNING; BORING 250
 
  
 
E21B EARTH OR ROCK DRILLING 294
 
  
 
0805 OTHER TOOLS AND IMPLEMENTS230
 
  
 
1509 MACHINE TOOLS, ABRADING AND FOUNDING MACHINERY227

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0107,334 STONE CUTTING DEVICEJun 10, 14Apr 21, 16[B28D, B23D]
2014/0154,956 Pad Conditioning and Wafer Retaining Ring and Manufacturing Method ThereofNov 29, 13Jun 05, 14[B24B]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9868226 Stone cutting deviceJun 10, 14Jan 16, 18[B28D, B27B, B23D]
9776306 Method for manufacturing an electrodeposited diamond wire saw using patterned non-conductive materialsMar 19, 12Oct 03, 17[C25D, B25D, B24D, B23D]
9694512 Brazing bond type diamond tool with excellent cuttability and method of manufacturing the sameAug 03, 15Jul 04, 17[B28D, B23D]
9421668 CMP apparatusJun 07, 12Aug 23, 16[B24B]
9314901 CMP pad conditioner, and method for producing the CMP pad conditionerMay 15, 12Apr 19, 16[B24B, B24D]
9115551 Reaming shell for miningFeb 21, 11Aug 25, 15[E21B]
9028300 Grinding tool adapted to collect grinding particlesJun 15, 12May 12, 15[B24B, B24D]
8973566 Workpiece for frame gang saw, method for cutting the workpiece, and product cut by the methodDec 23, 09Mar 10, 15[B28D, B32B]
8801342 Drill bitApr 10, 09Aug 12, 14[B23B, B28D]
8656901 Cutting tip of frame saw and frame saw with the cutting tipFeb 28, 07Feb 25, 14[B28D]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2016/0082,619 CUTTING TOOL AND CUTTING APPARATUS COMPRISING SAMEAbandonedMay 02, 14Mar 24, 16[B28D, B23D]
2013/0344,779 CONDITIONER FOR SOFT PAD AND METHOD FOR MANUFACTURING SAMEAbandonedMar 07, 12Dec 26, 13[B24B, B24D]
2013/0059,510 BRAZING BOND TYPE DIAMOND TOOL WITH EXCELLENT CUTTABILITY AND METHOD OF MANUFACTURING THE SAMEAbandonedAug 02, 12Mar 07, 13[B24D]
2008/0219,783 Cutting Segment of Cutting Tool and Cutting ToolAbandonedDec 28, 05Sep 11, 08[B26D, B23D]
2007/0056,574 CUTTING SEGMENT, METHOD FOR MANUFACTURING CUTTING SEGMENT, AND CUTTING TOOL COMPRISING THE SAMEAbandonedApr 13, 06Mar 15, 07[B28D]
7134430 Cutting segment, method of manufacturing cutting segment, and cutting toolExpiredDec 09, 04Nov 14, 06[B28D]
2006/0130,823 Gear type machining tip and tool attaching the same thereonAbandonedMar 07, 03Jun 22, 06[B28D]
2006/0128,288 Conditioner for chemical mechanical planarization padAbandonedDec 07, 05Jun 15, 06[B24B]
6890250 Diamond blade having rim type cutting tip for use in grinding or cutting apparatusExpiredSep 03, 99May 10, 05[B23F]
6872133 Wave saw bladeExpiredJul 24, 03Mar 29, 05[B23F]
6638153 Diamond saw blade equipped with undercut preventing tipExpiredJun 22, 01Oct 28, 03[B23F]
2003/0114,085 Superabrasive composition and superabrasive article comprising same for grinding CRT front panelAbandonedSep 27, 01Jun 19, 03[B24B]
6478021 Saw blade for preventing undercutExpiredNov 16, 00Nov 12, 02[B28D]
2001/0023,690 Saw blade for cutting steel-reinforced structureAbandonedDec 05, 00Sep 27, 01[B28D]
5782682 Grinding wheel having abrasive tipsExpiredJun 04, 96Jul 21, 98[B24B]
D347562 Disk-shaped diamond sawExpiredSep 29, 92Jun 07, 94[]
D342270 Core drill for perforating stoneExpiredSep 29, 92Dec 14, 93[]

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