Inventor · Leesburg, VA, US

David Walker

28Patents
12h-index
48Co-inventors
81Inventor score

Filing activity: Mar 6, 1986 → Dec 10, 2020

Most-cited inventions

PatentTitleAreaCited byStatus
US6755344B1 Systems and methods for determining an authorization threshold Physics 265 Expired
US4696512A Motorized recliner chair with release mechanism Human Necessities 41 Expired
US5682423A Electrical power and telephone ringer signal distribution system Electricity 37 Expired
US10095549B1 Ownership transfer account service in a virtual computing environment Electricity 37 Active
US6935559B2 Systems and methods for determining an authorization threshold Physics 29 Expired
US8572676B2 System, method, and device for mediating connections between policy source servers, corporate repositories, and mobile devices Electricity 25 Active
US7191941B1 Systems and methods for determining a need for authorization Physics 21 Expired
US10810055B1 Request simulation for ensuring compliance Physics 21 Active
US10223176B1 Event handler nodes for visual scripting Physics 17 Active
US5901112A Signal energy enhancement for seismic exploration Physics 16 Expired
US7769638B1 Systems and methods for verifying authorization for electronic commerce Physics 14 Active
US8565726B2 System, method and device for mediating connections between policy source servers, corporate repositories, and mobile devices Electricity 13 Active
USD779513S1 Display screen with graphical user interface General 10 Active
US10771468B1 Request filtering and data redaction for access control Electricity 9 Active
US10972580B1 Dynamic metadata encryption Electricity 7 Active
US8473351B1 Systems and methods for verifying authorization Physics 6 Active
US5020271A Watering devices Human Necessities 6 Expired
US7182255B2 Systems and methods for determining an authorization Physics 5 Expired
US10481963B1 Load-balancing for achieving transaction fault tolerance Electricity 4 Active
US8935384B2 Distributed data revocation using data commands Electricity 3 Active
USD496192S1 Remote control console General 3 Expired
US11394636B1 Network connection path obfuscation using global access points Electricity 1 Active
US10922152B2 Event handler nodes for visual scripting Physics 0 Active
US8528042B2 System, method, and device for mediating connections between policy source servers, corporate repositories, and mobile devices General 0 Revoked
US10740151B1 Parallelized forensic analysis using cloud-based servers Electricity 0 Active

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