Yamanashi, Japan

Toshio Takayama

This inventor holds 34 USPTO granted patents, primarily in Brake Control Systems. Top assignees: Tokico, Ltd., Kabushiki Kaisha Hitachi Seisakusho. Active years: 1983-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshio Takayama. Retrieved from https://idiyas.com/inventor/toshio-takayama

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 94.1

Average Co-Inventor Count = 2.0

ph-index = 9

Forward Citations = 223(Granted Patents)


Location History:

  • Yokohama, JP (1983)
  • Kanagawa, JP (1984 - 1989)
  • Nakakoma, JP (1992)
  • Yamanashi, JP (1993 - 2005)
  • Yamanashi-ken, JP (1996 - 2006)

Company Filing History:


Years Active: 1983-2006

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Areas of Expertise:
Master Cylinder
Pneumatic Booster
Brake Booster
Solenoid-Controlled Valve
Vehicle Brake Control
Motor-Driven Brake
Anti-Skid Control
Hydraulic Fluid Passage
Evaluation Method
Fluid Pressure Control
Braking Device
Vehicle Braking System
34 patents (USPTO):Explore Patents

Title: Innovations by Toshio Takayama: A Pioneer in Master Cylinder Apparatus

Introduction

Toshio Takayama, an esteemed inventor based in Yamanashi-ken, Japan, has made significant contributions to the field of automotive technology. With a total of 34 patents to his name, his latest innovations focus on enhancing the efficiency and reliability of master cylinder apparatuses in Brake-by-Wire (BBW) systems.

Latest Patents

One of Takayama's notable inventions is a master cylinder apparatus designed for BBW systems. This apparatus enables accurate detection of piston stroke without significantly increasing the size of the master cylinder. The design includes a master cylinder linked to wheel cylinders through fail-safe valves, a stroke simulator ensuring a desired brake pedal stroke, and a stroke sensor that transforms linear motion into rotational motion for precise measurement.

Another innovative approach by Takayama involves a master cylinder apparatus that mitigates the risk of brake delay, even when utilizing a plunger-type master cylinder. This invention features a tandem-type master cylinder that also connects to wheel cylinders through fail-safe valves. By incorporating cup seals in the cylinder body and optimizing the spring forces of the primary and secondary pistons, this design successfully achieves a reduction in master cylinder size while improving performance.

Career Highlights

Throughout his career, Toshio Takayama has been affiliated with reputable companies such as Tokico, Ltd. and Hitachi, Ltd. His work in these organizations has been instrumental in advancing braking technologies and ensuring safety in automotive applications.

Collaborations

During his journey as an inventor, Takayama has collaborated with prominent professionals in the field, including Kunihiro Matsunaga and Masaru Sakuma. These collaborations have helped to foster innovation and improve the technological landscape of braking systems.

Conclusion

Toshio Takayama's dedication to innovation is evident through his impressive portfolio of 34 patents, particularly in the realm of master cylinder apparatuses. His cutting-edge designs not only enhance vehicle safety but also contribute to the ongoing evolution of automotive technology.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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