Location History:
- Hitachinaka, JP (1998 - 2007)
- Tokyo, JP (2006 - 2008)
Company Filing History:
11 out of 42,508 
8 out of 248 
10 out of 832,880 Years Active: 1998-2008
Title: **Shigeru Tokumoto: Innovator in Throttle Valve Control Technology**
Introduction
Shigeru Tokumoto, based in Hitachinaka, Japan, is a prominent inventor recognized for his innovative contributions to the field of internal combustion engine technology. With a remarkable portfolio of 21 patents, Tokumoto has developed several groundbreaking inventions that enhance the efficiency and reliability of throttle valve systems.
Latest Patents
Among his latest patents are significant advancements in throttle valve control. One such invention is the "Throttle Valve Control Apparatus of Internal Combustion Engine and Automobile Using the Same." This apparatus addresses potential issues with throttle sensors by providing a long-service-life solution that delivers accurate output regarding throttle opening degree, utilizing a non-contact sensor design with hole elements.
Another noteworthy patent is the "Throttle Apparatus for an Internal Combustion Engine." In this invention, the returning spring for the electronic control throttle and a default spring for securing the initial opening degree of the throttle valve are designed with different diameters. This design innovation ensures effective functioning of the throttle valve by addressing air leakage and overshoot during operational changes, enhancing the overall control mechanism of the engine.
Career Highlights
Shigeru Tokumoto's career includes significant contributions while working for Hitachi, Ltd., where he played a crucial role in developing engineering solutions that cater to modern automotive demands. His expertise in throttle control technology has been instrumental in improving engine performance and reliability.
Collaborations
Throughout his career, Tokumoto has collaborated with notable professionals in the industry, including Toshifumi Usui and Yasuo Saito. These collaborations have undoubtedly contributed to his innovative achievements and success in the field.
Conclusion
Shigeru Tokumoto is a distinguished inventor whose work in throttle valve control technology has left a lasting impact on the automotive industry. His innovative patents not only showcase his technical prowess but also underline the importance of reliable and efficient engine management systems in the evolution of modern vehicles.