Jiaqing Yu

5 Patents

• US124355852025

  Hydraulic Control Apparatus and Method for a Downhole Tool

  China National Petroleum Corporation

  0 cites
• US120117732024

  Cutting Elements with Reduced Variable Back Rake Angle

  Beijing Huamei, Inc.

  0 cites
• US118792962024

  Blade Cap Force Modulation System for a Drill Bit

  Beijing Huamei, Inc. CNPC

  0 cites
• US118080902023

  Force Modulation System for a Drill Bit

  Beijing Huamei Inc. CNPC

  0 cites
• US115918582023

  Cutting Elements with Increased Curvature Cutting Edges

  CHINA NATIONAL PETROLEUM CORPORATION

  0 cites