TREA

EHWA Diamond Ind. Co. Ltd.

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Organization

  • Kyongki-do, KR
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Pad conditioner having reduced friction and method of manufacturing...
    • Patent number 10,478,941
    • Issue date Nov 19, 2019
    • Ehwa Diamond Ind. Co., Ltd.
    • So Young Yoon
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Polishing pad
    • Patent number D852601
    • Issue date Jul 2, 2019
    • Ehwa Diamond Ind. Co., Ltd.
    • Jun Seok Son
    • D08 - Tools and hardware
  • Information Patent Grant

    Stone cutting device
    • Patent number 9,868,226
    • Issue date Jan 16, 2018
    • EHWA DIAMOND IND. CO., LTD.
    • Dae-Yeon Rhee
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Saw blade
    • Patent number D513952
    • Issue date Jan 31, 2006
    • Ehwa Diamond Ind. Co., Ltd.
    • Chang Hyun Lee
    • D08 - Tools and hardware
  • Information Patent Grant

    Diamond blade having rim type cutting tip for use in grinding or cu...
    • Patent number 6,890,250
    • Issue date May 10, 2005
    • EHWA Diamond Ind., Co., Ltd.
    • Soo Kwang Kim
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Diamond blade having segment type cutting tip for use in cutting, g...
    • Patent number 6,638,152
    • Issue date Oct 28, 2003
    • Ehwa Diamond, Ind., Co., Ltd.
    • Soo Kwang Kim
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Diamond saw blade equipped with undercut preventing tip
    • Patent number 6,638,153
    • Issue date Oct 28, 2003
    • EHWA Diamond Ind. Co. Ltd.
    • Chang Hyun Lee
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Saw blade shank
    • Patent number 6,588,310
    • Issue date Jul 8, 2003
    • Ehwa Diamond Ind. Co., Ltd.
    • Chang Hyun Lee
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Core drill
    • Patent number 6,564,887
    • Issue date May 20, 2003
    • Ehwa Diamond Ind. Co., Ltd.
    • Jae Hyun Hong
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Grinding wheel with segments for preventing one-sided wear
    • Patent number 6,527,634
    • Issue date Mar 4, 2003
    • Ehwa Diamond Ind. Co., Ltd.
    • Chang Hyun Lee
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Adhesive sheet for noise and shock absorption, and saw blade making...
    • Patent number 6,526,959
    • Issue date Mar 4, 2003
    • Ehwa Diamond Ind. Co., Ltd.
    • Chang Hyun Lee
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Grinding wheel
    • Patent number D463965
    • Issue date Oct 8, 2002
    • Ehwa Diamond Ind. Co., Ltd.
    • Chang Hyun Lee
    • D08 - Tools and hardware
  • Information Patent Grant

    Saw blade
    • Patent number D460767
    • Issue date Jul 23, 2002
    • Ehwa Diamond Ind. Co.,Ltd.
    • See Hyung Kim
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Abrasive dressing tool and method for manufacturing the tool
    • Patent number 6,416,878
    • Issue date Jul 9, 2002
    • Ehwa Diamond Ind. Co., Ltd.
    • Jung Soo An
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Saw blade
    • Patent number D459374
    • Issue date Jun 25, 2002
    • Ehwa Diamond Ind. Co., Ltd.
    • See Hyung Kim
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Wheel for saw blade
    • Patent number D459171
    • Issue date Jun 25, 2002
    • Ehwa Diamond Ind. Co., Ltd.
    • Jae Hyun Hong
    • D08 - Tools and hardware
  • Information Patent Grant

    Segment tip for saw blade
    • Patent number D458619
    • Issue date Jun 11, 2002
    • Ehwa Diamond Ind. Co., Ltd.
    • Chang Hyun Lee
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Segment tip for saw blade
    • Patent number D456425
    • Issue date Apr 30, 2002
    • Ehwa Diamond Ind. Co., Ltd.
    • See Hyung Kim
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Grinding wheel for use in grinding apparatus
    • Patent number 6,299,522
    • Issue date Oct 9, 2001
    • EHWA Diamond Ind. Co. Ltd.
    • Chang Hyun Lee
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Saw blade for cutting steel-reinforced structure
    • Patent number D447496
    • Issue date Sep 4, 2001
    • EHWA Diamond Ind. Co. Ltd.
    • Chang Hyun Lee
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Grinding wheel having abrasive tips
    • Patent number 5,782,682
    • Issue date Jul 21, 1998
    • EHWA Diamond Ind. Co. Ltd.
    • Jung Su Han
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Diamond cutting tool for hard articles
    • Patent number 5,392,759
    • Issue date Feb 28, 1995
    • EHWA Diamond Ind. Co. Ltd.
    • Kim S. Kwang
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Diamond cutting tool for hard articles
    • Patent number 5,316,416
    • Issue date May 31, 1994
    • EHWA Diamond Ind. Co., Ltd.
    • Soo K. Kim
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Core drill for perforating stone
    • Patent number D342270
    • Issue date Dec 14, 1993
    • EHWA Diamond Ind. Co., Ltd.
    • Kim S. Kwang
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Wire saw
    • Patent number 5,216,999
    • Issue date Jun 8, 1993
    • EHWA Diamond Ind. Co., Ltd.
    • Jung S. Han
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

  • Information Trademark

    74581784 - EHWA
    • Serial number 74581784
    • Registration number 2004942
    • Filing date Oct 4, 1994
    • EHWA DIAMOND IND. CO., LTD.
    • 7 - Machines and machine tools
  • Information Trademark

    74581782 - EHWA DIAMOND IND. CO., LTD.
    • Serial number 74581782
    • Filing date Oct 4, 1994
    • EHWA DIAMOND IND. CO., LTD.
    • 35 - Advertising
  • Information Trademark

    74581783 - EHWA
    • Serial number 74581783
    • Filing date Oct 4, 1994
    • EHWA DIAMOND IND. CO., LTD.
    • 35 - Advertising