Location History:
- Tanashi, JP (1984 - 1985)
- Tokyo, JP (1981 - 1988)
Company Filing History:
6 out of 226 
3 out of 339 
Years Active: 1981-1988
Title: **Haruo Sakaguchi: A Pioneer in Optical Communication Technologies**
Introduction
Haruo Sakaguchi is a notable inventor based in Tokyo, Japan, renowned for his significant contributions to the field of optical communication. With a total of nine patents to his name, his work has advanced the technologies that enable efficient data transmission over optical fibers.
Latest Patents
Sakaguchi's most recent patents reflect his innovative approach to solving complex challenges in optical communication systems. One of his key inventions is a **System for Measuring Delay Time Variation in Optical Fiber Digital**. This system measures delay time variation at terminal ends of an optical fiber communication system that includes optical regenerative repeaters. The invention provides a mechanism for monitoring changes in delay time by comparing reference clock signals and returning monitored signals from the farthest repeater, ensuring reliable communication.
Another notable patent is the **Signal Coupling System for Optical Repeater System**. This invention employs a signal coupler to connect multiple transmitter-receivers via optical fiber cables, optimizing data transmission through bit-multiplexing methods. The coupler manages the synchronization of signals to facilitate seamless communication among various destinations.
Career Highlights
Haruo Sakaguchi has had a successful career, working with reputable companies such as Kokusai Denshin Denwa Co., Ltd. and Kokusai Denshin Denwa Kabushiki Kaisha. His experience in these organizations has allowed him to develop groundbreaking technologies that enhance optical communication systems.
Collaborations
Throughout his career, Sakaguchi has collaborated with esteemed colleagues, notably Norio Seki and Shu Yamamoto. Their combined expertise has contributed to the advancement of optical technologies and innovation in the field.
Conclusion
Haruo Sakaguchi stands out as an influential inventor in optical communication. His dedication to innovation has resulted in several patents that significantly improve data transmission techniques, making him a valuable asset to the engineering community. His work exemplifies the spirit of innovation that drives advancements in technology today.