Location History:
- Otake, JP (2004)
- Hiroshima-ken, JP (2007)
- Hatsukaichi, JP (2008)
- Hiroshima, JP (1992 - 2012)
Company Filing History:
10 out of 4,680 
3 out of 1,357 
1 out of 2 
Years Active: 1992-2012
Title: Innovations of Junichi Doi
Introduction
Junichi Doi is a prominent inventor based in Hiroshima, Japan. He has made significant contributions to the field of automatic transmission technology, holding a total of 15 patents. His work has been influential in the automotive industry, showcasing his expertise and innovative spirit.
Latest Patents
One of Junichi Doi's latest patents involves an advanced automatic transmission system. This system features first, second, and third gear sets, along with first and second clutches, and first, second, and third brakes. The design includes interconnected sun gears and carriers, which enhance the efficiency of the transmission. Another notable patent describes an automatic transmission that incorporates a valve body with control valves for hydraulically managing friction engaging elements. This design also includes an electric control unit for precise gear shifting, demonstrating Doi's commitment to integrating technology with automotive engineering.
Career Highlights
Throughout his career, Junichi Doi has worked with esteemed companies such as Mazda Motor Corporation and Mitsubishi Rayon Company, Limited. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in automotive technology.
Collaborations
Junichi Doi has collaborated with talented individuals in the industry, including Shinya Kamada and Tatsutoshi Mizobe. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.
Conclusion
Junichi Doi's contributions to automatic transmission technology have established him as a key figure in the automotive industry. His innovative patents and collaborations reflect his dedication to advancing engineering solutions.