Patents Assigned to CORE TOOL GROUP, INC.
  • Bit
    Patent number: 11839956
    Abstract: Various embodiments of bits are described having a drive portion, a shank and a head portion or tip. The shank can comprise a set of raised rings that extend from an outer surface of the shank. The rings are spaced apart along the shank starting from the head portion, and preferably have different distances between at least two adjacent pairs of rings.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: December 12, 2023
    Assignee: CORE Tool Group, Inc.
    Inventor: Zhong-Yue Wu
  • Bit
    Patent number: D883062
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: May 5, 2020
    Assignee: CORE TOOL GROUP, INC.
    Inventor: Zhong-Yue Wu
  • Bit
    Patent number: D885157
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: May 26, 2020
    Assignee: CORE TOOL GROUP, INC.
    Inventor: Zhong-Yue Wu