Inventor · Bunker, UT, US

Daniel Madsen

58Patents
7h-index
34Co-inventors
68Inventor score

Filing activity: Jun 30, 2004 → Jun 23, 2020

Most-cited inventions

PatentTitleAreaCited byStatus
US7254383B2 Voice over IP based biometric authentication Electricity 28 Expired
US7995995B2 Voice over IP based biometric authentication Electricity 26 Active
US7107220B2 Centralized biometric authentication Electricity 23 Expired
US7324946B2 Centralized biometric authentication Electricity 12 Active
US9399566B2 Grooved drum and associated roller for motorized lifting device Performing Operations; Transporting 11 Active
US7546454B2 Automated digital certificate discovery and management Electricity 10 Active
US8700902B2 Methods and apparatus to certify digital signatures Electricity 9 Active
US8082154B2 Centralized biometric authentication Electricity 7 Active
US10173870B1 Swivel winch rotated via an actuator in response to pressure sensor data Performing Operations; Transporting 5 Active
US10294087B2 Directional winch-cable wiper with sensor Performing Operations; Transporting 5 Active
US7765398B2 Method of promulgating a transaction tool to a recipient Physics 4 Active
US9637360B2 Locking mechanism for motorized lifting device Performing Operations; Transporting 4 Active
US10640344B1 Extendable pivoting winch assembly Performing Operations; Transporting 4 Active
US9988118B1 Load-leveling suspended hanger Mechanical Engineering; Lighting; Heating 3 Active
US9567194B2 Grooved drum and associated passive guide for motorized lifting device Performing Operations; Transporting 3 Active
US10677388B2 Overhead mounting system and attachments Mechanical Engineering; Lighting; Heating 3 Active
US8384514B2 Enhanced biometric authentication Electricity 3 Active
US10723601B2 Winch and fairlead with a detachable line guide Performing Operations; Transporting 2 Active
US10036119B1 Thimble assembly for a cord Textiles; Paper 2 Active
US9988251B2 Motorized lifting device with mounting flanges Performing Operations; Transporting 2 Active
US9863238B2 Submersible electrical machine and method Electricity 2 Active
US10280051B2 Multiple motorized lifting devices mounted to a structure Performing Operations; Transporting 2 Active
US9975745B2 Compact motorized lifting device Performing Operations; Transporting 2 Active
US10273125B2 Bristled winch-guide Performing Operations; Transporting 2 Active
US10544017B2 Winch with one-way reverse tensioner Performing Operations; Transporting 2 Active

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