Yingchun Zhang

4 Patents

• US125519832026

  Large Area Quartz Crystal Wafer Lapping Device and a Lapping Method Thereof

  0 cites
• US124431002025

  Mask Pattern

  Semiconductor Manufacturing International (Shanghai) Corporation

  0 cites
• US122591552025

  Air Purifier

  SHENZHEN CHENBEI TECHNOLOGY CO., Ltd.

  0 cites
• US117201872023

  Touchpad Assembly and Electronic Device

  HUAWEI TECHNOLOGIES CO., Ltd.

  0 cites