Company Filing History:
Years Active: 2004-2011
Title: **Innovations of Hisanori Mishima in Document Security**
Introduction
Hisanori Mishima, an accomplished inventor based in Yokohama, Japan, has made significant contributions to the field of document security. With two patents to his name, Mishima's innovations focus on enhancing the integrity and verification processes of digital documents.
Latest Patents
Mishima's most recent patents include an **Authentication system and apparatus** and a **Digital signature generating method and digital signature verifying method**. The authentication system introduces a robust mechanism where a document creation unit calculates hash values for each software component, storing them for future verification. It also incorporates a time distribution unit that records time information, which is crucial for ensuring the accuracy of document management. The apparatus ensures tamper-proof document transmission and provides a verification process through hash value comparison and digital signature checks.
Career Highlights
Mishima is currently employed at Hitachi, Ltd., where he continues to pursue innovative solutions in technology. His extensive experience and focus on digital security have positioned him as a thought leader in the field, driving advancements that enhance the security of document creation and transmission.
Collaborations
Throughout his career, Mishima has collaborated with notable colleagues, including Kunihiko Miyazaki and Ryoichi Sasaki. Their teamwork has fostered a rich environment for innovation, enabling the development of cutting-edge technologies that respond to the growing demand for secure digital solutions.
Conclusion
Hisanori Mishima's contributions through his patents in document security exemplify the vital role that innovation plays in protecting digital information. As technology continues to evolve, the significance of his work will likely grow, ensuring that secure document handling remains at the forefront of technological advancements.