Company Filing History:
Years Active: 1987
Title: The Innovative Contributions of Jisaburo Ushizawa
Introduction
Jisaburo Ushizawa, a notable inventor based in Tokyo, Japan, has made significant contributions to the field of acoustic wave technology. With a focus on surface acoustic wave devices, his work has paved the way for advancements in various applications, making him a prominent figure in the realm of innovation.
Latest Patents
Ushizawa holds a patent for a groundbreaking surface acoustic wave device. This invention features a surface acoustic wave filter that incorporates multiple electroacoustic interdigital electrodes constructed from thin aluminum films on a Li₂B₄O₇ single crystal substrate. Additionally, the device includes a surface acoustic wave resonator designed with electroacoustic interdigital electrodes and grating reflectors, also made of aluminum thin films. Notably, the cut angle of the substrate and the wave propagation direction are meticulously configured to ensure a temperature coefficient of frequency (TCD) of the device is below ±5 ppm/°C, while achieving a coupling coefficient (K²) of about 1.0%. This innovation minimizes angular dependence in propagation speed, showcasing Ushizawa's exceptional engineering skills.
Career Highlights
Throughout his career, Jisaburo Ushizawa has been affiliated with Kabushiki Kaisha Toshiba, a leading company in electronics and technology. His role within Toshiba has enabled him to focus on research and development in advanced acoustic technologies, where he has demonstrated remarkable innovation.
Collaborations
Ushizawa has collaborated with esteemed colleagues Hitoshi Suzuki and Yasuo Ebata. Together, they have contributed to pushing the boundaries of surface acoustic wave technology, enhancing the efficacy and performance of these devices through their collective expertise.
Conclusion
Jisaburo Ushizawa's contributions to the field of surface acoustic wave devices underscore his innovative spirit and dedication to technological advancement. With a patent that exemplifies precision and efficiency, Ushizawa remains an influential inventor whose work continues to impact the industry positively. His collaborations further highlight the importance of teamwork in achieving groundbreaking innovations in technology.
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