Company Filing History:
3 out of 3,252 
1 out of 1,838 Years Active: 1980-1996
Title: Hiromi Tokuda: Innovator in Automotive Technology
Introduction
Hiromi Tokuda is a notable inventor based in Nagoya, Japan. She has made significant contributions to the field of automotive technology, particularly in the development of devices that enhance vehicle safety and performance. With a total of 3 patents to her name, Tokuda's work reflects her commitment to innovation in the automotive industry.
Latest Patents
One of her latest inventions is a tire air pressure detecting device. This device aims to detect tire air pressure indirectly with high detection precision. It includes a speed sensor that outputs a signal corresponding to the rotational speed of a tire. An electronic control unit processes this signal to calculate wheel speed and perform frequency analysis, ultimately deriving a resonance frequency that corresponds to the unsprung mass in both vertical and longitudinal directions. The tire air pressure is then detected based on this resonance frequency.
Another significant patent is a shock absorber control apparatus. This apparatus connects a shock absorber between a vehicle body and a vehicle wheel, providing a variable damping force. The control apparatus includes an actuator that adjusts the damping force, a vibration detecting device that measures relative vibration, and a damping-factor estimating device that estimates the shock absorber's damping factor. Additionally, a speed estimating device determines the absolute speed of the spring upper member, allowing for precise control of the actuator's drive signal.
Career Highlights
Throughout her career, Hiromi Tokuda has worked with prominent companies in the automotive sector, including Nippondenso Co., Ltd. and Toyota Motor Corporation. Her experience in these organizations has allowed her to develop and refine her innovative ideas, contributing to advancements in vehicle technology.
Collaborations
Tokuda has collaborated with esteemed colleagues such as Takeyasu Taguchi and Toshiharu Naito. These partnerships have fostered a creative environment that has led to the successful development of her patented technologies.
Conclusion
Hiromi Tokuda's contributions to automotive technology through her innovative patents demonstrate her expertise and dedication to enhancing vehicle safety and performance. Her work continues to influence the industry and inspire future innovations.