This inventor holds 4 USPTO granted patents, plus 1 CIPO patent. Top assignees: Koninklijke Kpn N.v., Koninklijke Ptt Nederland N.v., Nokia Corporation. Active years: 1999-2007.
Company Filing History:
2 out of 389 
1 out of 159 
1 out of 8,283 
Years Active: 1999-2007
Title: Willem Rombaut: Innovator in Cryptographic Technologies
Introduction
Willem Rombaut is a notable inventor based in The Hague, Netherlands. He has made significant contributions to the field of cryptography, holding a total of 4 patents. His work focuses on enhancing the security of data processing and electronic payment systems.
Latest Patents
Rombaut's latest patents include a "Method and device for cryptographically processing data." This invention involves feeding data (X) and a key (K) into a cryptographic process (P), which may be a known process. To obscure the nature of this process, auxiliary values are introduced, such as a supplementary key (K*), which generates the key proper (K) through a supplementary process (P*). This combination results in an unknown process, thereby improving cryptographic security. Another significant patent is the "Method of debiting an electronic payment means." This invention provides a secure method for debiting electronic payment mechanisms, such as telephone cards. It utilizes a communication protocol that incorporates authentication to identify the payment mechanism, ensuring that the contents of the dynamic memory related to authentication are preserved during the protocol.
Career Highlights
Willem Rombaut has worked with prominent companies, including Koninklijke KPN N.V. and Koninklijke PTT Nederland N.V. His experience in these organizations has contributed to his expertise in cryptographic technologies and electronic payment systems.
Collaborations
Rombaut has collaborated with notable individuals in his field, including Frank Muller and Rob Pieterse. These partnerships have likely enriched his work and led to innovative solutions in cryptography.
Conclusion
Willem Rombaut is a distinguished inventor whose work in cryptography and electronic payment systems has made a significant impact. His innovative patents reflect his commitment to enhancing security in data processing.