Location History:
- Hatano, JP (1989)
- Zama, JP (1989)
- Hadano, JP (1997)
- Kanagawa, JP (1992 - 2005)
Company Filing History:
5 out of 13,395 
2 out of 1,021 
2 out of 60 Years Active: 1989-2005
Title: Innovations of Toshio Yamaguchi
Introduction
Toshio Yamaguchi is a notable inventor based in Hadano, Japan. He has made significant contributions to the field of automotive technology, particularly in the design and functionality of automatic transmissions. With a total of eight patents to his name, Yamaguchi's work has had a lasting impact on the industry.
Latest Patents
Yamaguchi's latest patents include a speed change mechanism for automatic transmissions. This innovative design features a first planetary gear unit that converts input rotation from an input shaft to an output rotation with a lower speed. Additionally, a first unit comprising second and third planetary gear units is positioned between the first planetary gear unit and the output shaft. This configuration allows for seven types of rotation, corresponding to six forward speeds and one reverse position. Another significant patent is the drum supporting structure for automotive automatic transmissions. This structure includes larger and smaller diameter portions, along with a radially raised wall portion defined by an aluminum drum support. The design incorporates steel sleeves that provide stability and support for the drum.
Career Highlights
Throughout his career, Toshio Yamaguchi has worked with prominent companies in the automotive sector, including Nissan Motor Company Limited and Jatco Corporation. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking innovations in automatic transmission technology.
Collaborations
Yamaguchi has collaborated with talented individuals such as Kazuyoshi Iwanaga and Tsuyoshi Sugihara. These partnerships have fostered a creative environment that has led to the development of advanced automotive technologies.
Conclusion
Toshio Yamaguchi's contributions to the automotive industry through his innovative patents and collaborations highlight his expertise and dedication to advancing technology. His work continues to influence the design and functionality of automatic transmissions, making him a significant figure in the field.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.