Company Filing History:
Years Active: 1991-1993
Title: Shigeru Umemura: Innovator in Optical Technology
Introduction
Shigeru Umemura is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical technology, holding a total of 2 patents. His work focuses on innovative solutions for optical distribution systems, showcasing his expertise and creativity in this specialized area.
Latest Patents
Umemura's latest patents include an "Automated Optical Main Distributing Frame System." This invention involves an optical MDF designed for interconnecting external subscriber optical lines with office optical lines through a jumpering operation. The system utilizes a matrix waveguide with multiple crosspoints that can be switched ON or OFF based on the presence of matching oil, which has the same refractive index as the waveguides. This innovative approach allows for efficient light signal management and switching.
Another notable patent is the "Matrix Switching Device and Method of Manufacturing the Same." This device features a matrix board with X- and Y-conductor patterns arranged in parallel. At each crossing point, a through hole is formed, allowing for electrical connections through conductive portions. This design enhances the functionality and reliability of matrix switching devices.
Career Highlights
Shigeru Umemura is currently employed at Nippon Telegraph and Telephone Corporation, where he continues to develop cutting-edge technologies in the telecommunications sector. His work has significantly impacted the efficiency and effectiveness of optical communication systems.
Collaborations
Umemura has collaborated with notable colleagues, including Tsuneo Kanai and Shigefumi Hosokawa. These partnerships have fostered innovation and contributed to the advancement of optical technologies.
Conclusion
Shigeru Umemura's contributions to optical technology through his patents and work at Nippon Telegraph and Telephone Corporation highlight his role as a leading inventor in the field. His innovative solutions continue to shape the future of optical communication systems.