Inventor

DE ROOIJ PETER JACOBUS NICOLAA

BE3 patents

⚠️ This page may combine multiple inventors who share the name “DE ROOIJ PETER JACOBUS NICOLAA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KONINKL KPN NV

2 patents

US6016955AJan 25, 2000

Electronic payment method and system having several calculation units and electronic payment devices

KONINKL KPN NV89 citations93

US6003764ADec 21, 1999

Method of securely storing and retrieving monetary data

KONINKL KPN NV52 citations85

(unassigned)

1 patent

US5924084AJul 13, 1999

Method for tracing payment data in an anonymous payment system

38 citations87