Company Filing History:
3 out of 5,207 
1 out of 1 
1 out of 36,546 
Years Active: 1986-1987
Title: The Innovative Contributions of Toyohisa Yamada
Introduction
Toyohisa Yamada is a notable inventor based in Anjo, Japan. He has made significant contributions to the field of automotive technology, particularly in the development of hydraulic systems for vehicles. With a total of three patents to his name, Yamada's work has had a lasting impact on vehicle safety and performance.
Latest Patents
Yamada's latest patents include a hydraulic anti-skid apparatus for automotive vehicles. This innovative system features a cut-off valve within a braking circuit that connects a master cylinder to a wheel brake cylinder. It also includes a bypass valve in a bypass passage of the braking circuit. The apparatus utilizes first and second pistons to control the opening and closing operations of the cut-off and bypass valves. Each piston is designed to respond to hydraulic braking pressure from the master cylinder and hydraulic power pressure from a fluid pump. A solenoid valve is incorporated to manage the power pressure applied to the first piston, while a regulator valve controls the power pressure for both pistons based on the braking pressure. This sophisticated design allows for the production of hydraulic pressure that exceeds the braking pressure, enhancing vehicle safety.
Career Highlights
Throughout his career, Toyohisa Yamada has worked with prominent companies in the automotive industry, including Aisin Seiki Co., Ltd. and Toyota Motor Corporation. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking innovations in vehicle technology.
Collaborations
Yamada has collaborated with esteemed colleagues such as Masamoto Ando and Hiroaki Takeuchi. Their combined expertise has fostered an environment of innovation and creativity, leading to advancements in automotive safety systems.
Conclusion
Toyohisa Yamada's contributions to the field of automotive technology, particularly through his hydraulic anti-skid apparatus, demonstrate his commitment to enhancing vehicle safety and performance. His work continues to influence the industry and inspire future innovations.
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.