Location History:
- Wako, JP (1988 - 1989)
- Saitama, JP (1989 - 1993)
- Tokorozawa, JP (1987 - 1994)
Company Filing History:
Years Active: 1987-1994
Title: Kouji Yamaguchi: Innovator in Hydraulic Servo Systems
Introduction
Kouji Yamaguchi is a prominent inventor based in Saitama, Japan, recognized for his significant contributions in the field of hydraulic systems. With an impressive portfolio of 31 patents, Yamaguchi has made substantial advancements in technologies that enhance the efficiency of vehicle transmissions.
Latest Patents
Among his latest contributions, Yamaguchi's innovative designs include a hydraulic servo unit with solenoid-operated valves having variable duty. This sophisticated hydraulic servo unit enables precise control over the swash plate angle of continuously variable transmissions. It features a cylinder divided into rod-side and head-side chambers, allowing for optimal working oil flow control, especially at very low rates. This invention enhances the performance and smooth operation of speed reduction ratios in vehicles.
Another notable patent is his shift control system designed for vehicle transmissions comprising multiple gear trains. This system facilitates shifting without the need to disengage the clutch, thereby enabling prompt gear changes. By adjusting engine crankshaft revolutions through ignition and fuel supply controls, the system ensures synchronization of the main shaft and counter shaft, significantly improving transmission efficiency.
Career Highlights
Kouji Yamaguchi is currently associated with Honda Giken Kogyo Kabushiki Kaisha, where he continues to drive innovations in automotive technology. His work has not only strengthened Honda's position in the market but also contributed to advancements in vehicle handling and performance.
Collaborations
Throughout his career, Yamaguchi has collaborated with esteemed colleagues such as Yoshikazu Ishikawa and Koji Sasajima. Together, they have tackled complex engineering challenges and delivered cutting-edge solutions that have helped shape modern automotive systems.
Conclusion
Kouji Yamaguchi stands out as a visionary inventor whose contributions to hydraulic systems and transmission technologies continue to impact the automotive industry. Through his work at Honda and innovative patents, Yamaguchi exemplifies the spirit of innovation that drives progress in vehicle engineering.
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.