Ronald Ferreira

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Paris, FR

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Patents Grantslast 30 patents

Information Patent Grant
Payment scheme for a mobile communication service
- Patent number 6,115,601
- Issue date Sep 5, 2000
- U.S. Philips Corporation
- Ronald Ferreira
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Data processing device including a microprocessor and an additional...
- Patent number 5,889,622
- Issue date Mar 30, 1999
- U.S. Philips Corporation
- Thomas Wille
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Device for implementing a message signature system and chip card co...
- Patent number 5,748,782
- Issue date May 5, 1998
- De La Rue Cartes Et Systems SAS
- Ronald Ferreira
- G07 - CHECKING-DEVICES