This inventor holds 2 USPTO granted patents. Top assignees: Nsk Corporation, Nsk Steering Co., Ltd.. Active years: 2002-2008.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Maebashi, JP (2002)
- Gunma, JP (2008)
Company Filing History:
2 out of 2,469 
1 out of 1 Years Active: 2002-2008
Title: Innovations by Takeshi Ishikawa
Introduction
Takeshi Ishikawa is a notable inventor based in Gunma, Japan. He has made significant contributions to the field of sensor technology, particularly in automotive applications. With a total of two patents to his name, Ishikawa's work focuses on enhancing the functionality and reliability of steering systems.
Latest Patents
Ishikawa's latest patents include a steering angle sensor and a torque sensor. The steering angle sensor is designed to detect the rotational angle of a steering system that is assisted by an electric motor. It calculates the steering angle of the steering wheel using a sensor wheel that operates in conjunction with the steering shaft. This sensor includes a GMR element and a magnetizing portion, which work together to detect the rotational angle by measuring changes in resistance value due to variations in the magnetic field.
The torque sensor, on the other hand, consists of a pair of detection coils whose impedances change in opposite directions in response to the torque generated in a rotating shaft. An AC voltage is applied to a bridge circuit that includes these detection coils, allowing for the detection of a differential voltage that serves as the torque signal. This innovation also includes a mechanism to judge the failure of circuit components based on the phase difference between the applied AC voltage and the differential voltage.
Career Highlights
Throughout his career, Ishikawa has worked with prominent companies such as NSK Corporation and NSK Steering Co., Ltd. His experience in these organizations has allowed him to develop and refine his inventions, contributing to advancements in automotive technology.
Collaborations
Ishikawa has collaborated with notable colleagues, including Toshiyuki Onizuka and Takeshi Hara. Their combined expertise has likely played a role in the successful development of his patented technologies.
Conclusion
Takeshi Ishikawa's contributions to sensor technology, particularly in steering systems, highlight his innovative spirit and dedication to improving automotive safety and performance. His patents reflect a commitment to advancing technology in meaningful ways.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile