Patents Assigned to LENS TECHNOLOGY CO., LTD
  • Disc containing copper for sapphire polishing, and method for preparing discs containing copper facing each other
    Patent number: 10220486
    Abstract: A disc containing copper for sapphire polishing; the annular surface of the disc is provided with a spiral grinding groove or concentric circular grinding grooves thereon; and stepped grooves are provided at the edges along both the outer ring and inner ring of the annular surface of the disc.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: March 5, 2019
    Assignee: Lens Technology Co., Ltd.
    Inventors: Qunfei Zhou, Qiaobing Rao, Liang Fu
  • Copper Disc for Sapphire Polishing, and Method of Repairing Double-Face Copper Disc
    Publication number: 20170129071
    Abstract: A disc containing copper for sapphire polishing; the annular surface of the disc is provided with a spiral grinding groove or concentric circular grinding grooves thereon; and stepped grooves are provided at the edges along both the outer ring and inner ring of the annular surface of the disc.
    Type: Application
    Filed: June 18, 2015
    Publication date: May 11, 2017
    Applicant: LENS TECHNOLOGY CO., LTD
    Inventors: Qunfei Zhou, Qiaobing Rao, Liang Fu