Location History:
- Yokosuka, JP (2012)
- Koriyama, JP (2012 - 2015)
- Tokyo, JP (2015 - 2016)
Company Filing History:
6 out of 4,711 
2 out of 25,550 
1 out of 7,525 
Years Active: 2012-2016
Title: Kumiko Yamaguchi: Innovator in Mobile Technology
Introduction
Kumiko Yamaguchi is a prominent inventor based in Koriyama, Japan. She has made significant contributions to the field of mobile technology, holding a total of six patents. Her innovative work focuses on enhancing the functionality and security of mobile terminals.
Latest Patents
One of her latest patents is for a mobile terminal and information reading preventing method. This invention allows a mobile terminal to determine whether a near field communication source is indeed a mobile terminal, thereby appropriately restricting information reading in near field communication. The mobile terminal is equipped with an antenna for near field communication and an RF part. The RF part includes an electromotive force measuring component that assesses the electromotive force of a carrier wave received by the antenna. If the measured electromotive force is less than or equal to a predetermined threshold, the system determines that the sender of the carrier wave is a mobile terminal and outputs a communication prohibition signal. An RF controller then locks the RF part based on this signal.
Another notable patent involves a portable terminal and recording medium. This invention enables a portable terminal to supply power to a chip card even when the host power is off. The power controller manages the power supply from a battery to the host, the chip card, and a CLF. The system includes switches that open or close power supply channels to the chip card based on specific conditions, ensuring efficient power management.
Career Highlights
Kumiko Yamaguchi has worked with notable companies such as NTT Docomo, Inc. and Sharp Corporation. Her experience in these organizations has allowed her to develop and refine her innovative ideas in mobile technology.
Collaborations
Some of her coworkers include Tetsuhiro Tanno and Masaharu Nakatsuchi. Their collaboration has contributed to the advancement of mobile technology and the successful development of her patents.
Conclusion
Kumiko Yamaguchi is a trailblazer in mobile technology, with her patents reflecting her commitment to innovation and security in mobile communications. Her work continues to influence the industry and inspire future advancements.