Location History:
- Nagareyama, JP (1994)
- Fukuoka, JP (1996)
Company Filing History:
2 out of 2,887 
2 out of 15 
1 out of 1 Years Active: 1994-1996
Title: An Insight into the Innovations of Keishi Ushijima
Introduction
Keishi Ushijima, an accomplished inventor based in Nagareyama, Japan, has made significant contributions to the field of optical radio communications. With a total of three patents to his name, Ushijima's work exemplifies the spirit of innovation in modern technology. His inventions revolve around enhancing communication systems through the use of optical signals, showcasing a blend of creativity and technical know-how.
Latest Patents
Ushijima's latest patents include groundbreaking advancements in optical radio transmission systems. One of his notable inventions is an optical radio communication system that consists of a first and a second light transmitting system. This system features a light-emitting element located at the focal point of a first parabolic reflector, generating light beams that are reflected and received by corresponding elements in the second parabolic reflector. Such designs allow for the direct transmission of broadband signals, including Manchester coded signals, via optical radio.
Another significant patent by Ushijima pertains to an optical radio repeater with integrated signal quality detection. This system improves communication between a host device and an end device, utilizing optical radio technology. The repeater processes light signals and includes mechanisms for quality detection, ensuring that only high-quality signals are transmitted. These innovations enhance the reliability and efficiency of optical communication systems.
Career Highlights
Throughout his professional journey, Keishi Ushijima has been associated with prominent companies in the communications sector. Notably, he worked with the Victor Company of Japan, Limited and NTT Data Communications Systems Corporation. His experience at these organizations has undoubtedly influenced his innovative mindset and shaped his contributions to optical communication technologies.
Collaborations
Ushijima’s collaborations with fellow engineers such as Kazutoshi Hirohashi and Takaaki Takeda have also played a vital role in the development of his patents. Working alongside talented individuals has fostered a collaborative spirit that often leads to innovative solutions in the field, further enriching his portfolio of inventions.
Conclusion
Keishi Ushijima's dedication to innovation within the realm of optical radio communications highlights the importance of inventors in advancing technology. His patents not only reflect his expertise but also contribute significantly to improving communication systems. As the world continues to embrace cutting-edge technologies, Ushijima's work stands as a testament to the relentless pursuit of innovation in addressing contemporary challenges.