Inventor · San Diego, CA, US

Phil Dixon

25Patents
15h-index
11Co-inventors
74Inventor score

Filing activity: Jun 10, 1999 → Jan 30, 2015

Most-cited inventions

PatentTitleAreaCited byStatus
US6577229B1 Multiple protocol smart card communication device Physics 300 Expired
US7482925B2 Apparatus and method to electromagnetically shield portable consumer devices Physics 120 Expired
US7522905B2 Apparatus and method for preventing wireless interrogation of portable consumer devices Physics 90 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
US8118223B2 Smart sign mobile transit fare payment Physics 41 Active
US7809652B2 Signature based negative list for off line payment device validation Physics 31 Active
US7567920B2 On-line authorization in access environment Physics 29 Active
US8448852B2 Open system account remote validation for access Physics 21 Active
US8523069B2 Mobile transit fare payment Physics 21 Active
US8733663B2 Mobile phone containing contactless payment card used in transit fare collection Physics 21 Active
US8256666B2 Processing transactions of different payment devices of the same issuer account Physics 19 Active
US8973818B2 Processing transactions of different payment devices of the same issuer account Physics 16 Active
US8746556B2 Open system account remote validation for access Physics 16 Active
US8407082B2 Aggregation of validated transactions for settlement Physics 15 Active
US8412640B2 Signature based negative list for off line payment device validation Physics 15 Active
US7227449B2 Multiple protocol smart card communication device Physics 14 Expired
US8688554B2 Bank issued contactless payment card used in transit fare collection Physics 14 Active
US9256875B2 Processing transactions of different payment devices of the same issuer account Physics 8 Active
US10055735B2 Delayed transit fare assessment Physics 6 Active
US8427317B2 Apparatus and method to electromagnetically shield portable consumer devices Physics 5 Active
US8825517B2 On-line authorization in access environment Physics 5 Active
US8145191B2 Apparatus and method for preventing wireless interrogation of phones Physics 2 Active
US8827156B2 Mobile payment device Physics 1 Active
US9704087B2 Apparatus and method to electromagnetically shield portable consumer devices Physics 0 Active

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