Peter Jacobus Nicolaas De Rooij

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3000 Leuven, BE

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Patents Grantslast 30 patents

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Electronic payment method and system having several calculation uni...
- Patent number 6,016,955
- Issue date Jan 25, 2000
- Koninklijke KPN N.V.
- Peter Jacobus Nicolaas De Rooij
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method of securely storing and retrieving monetary data
- Patent number 6,003,764
- Issue date Dec 21, 1999
- Koninklijke KPN N.V.
- Peter Jacobus Nicolaas De Rooij
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method for tracing payment data in an anonymous payment system
- Patent number 5,924,084
- Issue date Jul 13, 1999
- Peter Jacobus Nicolaas De Rooij
- G06 - COMPUTING CALCULATING COUNTING