This inventor holds 1 USPTO granted patent. Top assignees: Sanyo Electric Co., Ltd., Tokyo University of Science. Active years: 2008.
Company Filing History:
1 out of 8,782 
1 out of 11 
Years Active: 2008
Title: Keitarou Sekine: Innovator in Tuning Circuits
Introduction
Keitarou Sekine is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of radio communication through his innovative designs and patents. His work focuses on enhancing the functionality and efficiency of tuning circuits.
Latest Patents
One of Sekine's key patents is a tuning circuit with an amplitude attenuation function and an integrated circuit for radio communication apparatus. This patent describes a tuning circuit that includes a coil and a capacitor, along with a resistance-adjustment circuit connected in parallel. The resistance-adjustment circuit modifies the resistance of the tuning circuit when resonant. It consists of a series circuit of a resistor and a switching element, which has an ON-resistance smaller than that of the resistor. By turning the switching element on or off, the resistance of the tuning circuit can be altered during resonance.
Career Highlights
Throughout his career, Sekine has worked with prominent organizations, including Sanyo Electric Co., Ltd. and Tokyo University of Science. His experience in these institutions has allowed him to develop and refine his innovative ideas in the field of electronics.
Collaborations
Some of Sekine's notable coworkers include Masahiro Umewaka and Hiroya Yamamoto. Their collaboration has contributed to the advancement of technology in their respective fields.
Conclusion
Keitarou Sekine's contributions to tuning circuits and radio communication technology highlight his innovative spirit and dedication to advancing electronic design. His patent and collaborations reflect his commitment to enhancing the functionality of communication devices.