This inventor holds 5 USPTO granted patents. Top assignees: Hitachi Kiden Kogyo Kabushiki Kaisha, Tsumura Research Institute Co., Yagiantena Kabushiki Kaisha. Active years: 1986-2006.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
2 out of 9 
2 out of 2 
2 out of 2 Years Active: 1986-2006
Title: The Innovations of Toshihiro Tsumura
Introduction
Toshihiro Tsumura is a notable inventor based in Osaka, Japan. He has made significant contributions to the field of optical communication and telephone regulation systems. With a total of five patents to his name, Tsumura's work showcases his expertise and innovative spirit.
Latest Patents
One of Tsumura's latest patents is a multi-channel optical communication system that controls optical reflection for each channel. This system includes an optical transmitting apparatus and an optical receiving apparatus. The optical transmitting apparatus features a retroreflector and a modulator that modulates light reflected by the retroreflector according to a transmission signal. The light receiving apparatus consists of a light source and a demodulating circuit that demodulates the transmission signal modulated by the modulator. The modulator is equipped with multiple optical reflection devices that can control optical reflection independently. Another significant patent is a telephone regulation system and portable telephone terminal device. This system regulates the usage of a telephone terminal that communicates via radio waves. It includes an approach recognition device and a departure recognition device that transmit commands to the portable telephone terminal as it enters or leaves a predetermined region.
Career Highlights
Toshihiro Tsumura has worked with prominent companies such as Hitachi Kiden Kogyo and Yagiantena. His experience in these organizations has allowed him to develop and refine his innovative ideas.
Collaborations
Tsumura has collaborated with notable individuals in his field, including Shigeki Kamei and Akira Takahashi. Their joint efforts have contributed to the advancement of technology in optical communication and telephone systems.
Conclusion
Toshihiro Tsumura's contributions to innovation in optical communication and telephone regulation systems highlight his role as a leading inventor. His patents reflect a commitment to advancing technology and improving communication systems.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile