Inventor · Fraser, MI, US

John A. Blatt

41Patents
16h-index
10Co-inventors
78Inventor score

Filing activity: Jun 28, 1978 → Feb 5, 2001

Most-cited inventions

PatentTitleAreaCited byStatus
USD318718S Quick Disconnect coupling General 64 Expired
US4957318A Vacuum cup assembly Performing Operations; Transporting 47 Expired
US4905973A Power operated clamp with externally mounted adjustable clamp arm Performing Operations; Transporting 47 Expired
US5271651A Work holder support apparatus Mechanical Engineering; Lighting; Heating 42 Expired
US5261715A Work holder support apparatus Mechanical Engineering; Lighting; Heating 40 Expired
US5657972A Clamp with inflatable bladder Performing Operations; Transporting 37 Expired
US4828306A Vacuum cup control system Performing Operations; Transporting 32 Expired
US5299847A Gripper assembly Mechanical Engineering; Lighting; Heating 27 Expired
US5575462A Rotary clamp for a linear actuator Performing Operations; Transporting 27 Expired
US5277468A Vacuum control apparatus Mechanical Engineering; Lighting; Heating 27 Expired
US4988261A Multiple motion transfer apparatus Emerging Cross-Sectional Technologies 25 Expired
US6024392A Vacuum cup actuator Emerging Cross-Sectional Technologies 25 Expired
US5072652A Gripping device having impact cushioning means Performing Operations; Transporting 23 Expired
US5125632A Rotary actuated workpiece holder Mechanical Engineering; Lighting; Heating 23 Expired
US5819783A Modular 3-way valve with manual override, lockout, and internal sensors Emerging Cross-Sectional Technologies 19 Expired
US4444540A Automation lift unit Emerging Cross-Sectional Technologies 16 Expired
US4982652A Fluid operated actuator with recessed position sensor and recessed end cap fastener Mechanical Engineering; Lighting; Heating 16 Expired
US5938257A Power actuated parallel gripper Performing Operations; Transporting 16 Expired
US5152568A Extendible gripper Performing Operations; Transporting 16 Expired
US5152566A Spreader arm mounting device Performing Operations; Transporting 15 Expired
US6836056B2 Linear motor having piezo actuators Electricity 15 Expired
US5762325A Power actuated gripper Performing Operations; Transporting 15 Expired
US5799932A Rotary clamp having a common plane mounting arrangement Performing Operations; Transporting 14 Expired
US5634629A Rotary clamp having a common plane mounting arrangement Performing Operations; Transporting 13 Expired
US5215181A Dual-belt shuttle unit Performing Operations; Transporting 11 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.