Location History:
- Iruma, JP (1991)
- Saitama, JP (1993 - 1996)
Company Filing History:
Years Active: 1991-1996
Title: Shigefumi Hosokawa: Innovator in Optical Technology
Introduction
Shigefumi Hosokawa is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of optical technology, holding a total of 3 patents. His work focuses on innovative solutions that enhance the functionality and efficiency of optical systems.
Latest Patents
One of his latest inventions is the Pin-board matrix switch. This device features X- and Y-direction patterns arranged to form a matrix, with crosspoint holes at their intersections. Each hole contains contacts that connect to the patterns, allowing for selective electrical connections through a connecting pin with contact springs. Insulating members are strategically placed between the patterns to ensure optimal performance.
Another significant patent is the Automated optical main distributing frame system. This system interconnects external subscriber optical lines with office optical lines through a jumpering operation. It utilizes a matrix waveguide with 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 automated operations through robotic assistance.
Career Highlights
Shigefumi Hosokawa is currently employed at Nippon Telegraph and Telephone Corporation, where he continues to develop cutting-edge technologies in the optical field. His work has garnered attention for its practical applications and innovative designs.
Collaborations
He has collaborated with notable coworkers, including Tsuneo Kanai and Shigeru Umemura, contributing to advancements in optical technology through teamwork and shared expertise.
Conclusion
Shigefumi Hosokawa'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 systems.