Higashimatsuyama, Japan

Mutsuro Yamakoshi

This inventor holds 10 USPTO granted patents. Top assignee: Jidosha Kiki Co., Ltd.. Active years: 1987-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Mutsuro Yamakoshi. Retrieved from https://idiyas.com/inventor/mutsuro-yamakoshi

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 1.3

ph-index = 4

Forward Citations = 46(Granted Patents)


Location History:

  • Sakado, JP (1988)
  • Saitama, JP (1987 - 1994)
  • Higashimatsuyama, JP (1988 - 2000)

Company Filing History:


Years Active: 1987-2000

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10 patents (USPTO):Explore Patents

Title: Mutsuro Yamakoshi: Innovator in Brake Technology

Introduction

Mutsuro Yamakoshi is a notable inventor based in Higashimatsuyama, Japan. He has made significant contributions to the field of brake technology, holding a total of 10 patents. His innovative designs focus on enhancing the efficiency and safety of braking systems in vehicles.

Latest Patents

One of Yamakoshi's latest inventions is a liquid pressure control device for load responding brakes. This device features valve mechanisms that reduce liquid pressure from a brake master cylinder and transmit it to rear wheel brake cylinders. The operation is facilitated by a pair of plungers that respond to loads independently, ensuring optimal braking performance. Additionally, a load sensing mechanism adjusts the pressure reducing operation based on the vehicle's load, preventing hitting sounds during sudden braking and improving the durability of the components involved.

Another significant patent is for a brake fluid pressure control valve. This valve includes a plunger that is slidably fitted in a cylinder housing, with a retainer that maintains the plunger's position. The design incorporates an engagement hole that serves as both a securing mechanism and an air bleeding path, enhancing the valve's functionality.

Career Highlights

Throughout his career, Yamakoshi has worked with reputable companies such as Jidosha Kiki Co., Ltd. and Jidosha Kiko Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to advancements in automotive technology.

Collaborations

Yamakoshi has collaborated with notable colleagues, including Shinichi Inagaki and Kimio Ishihara. Their combined expertise has fostered innovation in the field of brake systems.

Conclusion

Mutsuro Yamakoshi's contributions to brake technology through his patents and collaborations highlight his role as a key innovator in the automotive industry. His work continues to influence the development of safer and more efficient braking systems.

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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