Inventor · Pleasanton, CA, US

Ayman Hammad

266Patents
39h-index
94Co-inventors
93Inventor score

Filing activity: Sep 13, 2002 → Sep 30, 2023

Most-cited inventions

PatentTitleAreaCited byStatus
US8577803B2 Virtual wallet card selection apparatuses, methods and systems Physics 647 Active
US9280765B2 Multiple tokenization for authentication Electricity 265 Active
US7818264B2 Track data encryption Electricity 245 Active
US8215563B2 Method and system for facilitating memory and application management on a secured token Physics 238 Active
US9355393B2 Multi-directional wallet connector apparatuses, methods and systems Physics 159 Active
US7243853B1 Method and system for facilitating memory and application management on a secured token Physics 153 Expired
US7482925B2 Apparatus and method to electromagnetically shield portable consumer devices Physics 120 Expired
US8645971B2 Real-time balance updates Electricity 107 Active
US8219490B2 Payment transaction using mobile phone as relay Electricity 103 Active
US8528067B2 Anytime validation for verification tokens Physics 101 Active
US8266205B2 Multiple channel optimization for transaction messages Electricity 93 Active
US7522905B2 Apparatus and method for preventing wireless interrogation of portable consumer devices Physics 90 Active
US7891560B2 Verification of portable consumer devices Physics 81 Active
US6837425B2 Compact protocol and solution for substantially offline messaging between portable consumer device and based device Physics 81 Expired
US8761809B2 Transaction using a mobile device with an accelerometer Electricity 74 Active
US8326759B2 Verification of portable consumer devices Physics 73 Active
US8453226B2 Token validation for advanced authorization Electricity 73 Active
US7527208B2 Bank issued contactless payment card used in transit fare collection Physics 70 Active
US8376227B2 Smart sign mobile transit fare payment Physics 65 Active
US9424603B2 Mobile location notifications system and method Physics 63 Active
US7152780B2 Compact protocol and solution for substantially offline messaging between portable consumer device and base device Physics 62 Expired
USD568388S1 Asymmetrical contactless data card with off-center aperture General 55 Expired
USD571856S1 Symmetrical contactless data card with off center aperture and shield General 53 Expired
US9317848B2 Integration of verification tokens with mobile communication devices Electricity 52 Active
US7668785B1 Notification social networking Physics 50 Active

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