Fuchu, Japan

Tsuyoshi Yamagiwa

This inventor holds 5 USPTO granted patents. Top assignees: Mazda Motor Corporation, Daikyonishikawa Corporation. Active years: 2009-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsuyoshi Yamagiwa. Retrieved from https://idiyas.com/inventor/tsuyoshi-yamagiwa

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


% Patents Active = 60.0

Average Co-Inventor Count = 4.9

ph-index = 3

Forward Citations = 21(Granted Patents)


Location History:

  • Fuchu-cho, JP (2009 - 2010)
  • Hiroshima, JP (2009 - 2022)

Company Filing History:


Years Active: 2009-2022

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5 patents (USPTO):Explore Patents

Title: Innovator Tsuyoshi Yamagiwa: Pioneering Vehicle Safety Technologies

Introduction: Tsuyoshi Yamagiwa is a notable inventor based in Fuchu-cho, Japan. With a remarkable track record of five patents, he has significantly contributed to the automotive industry, particularly in enhancing vehicle safety and interior structure.

Latest Patents: Among his latest innovations, Yamagiwa has developed a unique vehicle interior structure that features an impact-absorbing member. This member is strategically placed between the roof panel and the top ceiling below it. The design includes a base plate and a hollow, cone-shaped portion with a fragile section that enables effective vertical crush and deformation during impacts. Another significant invention is the rear structure of a vehicle equipped with a curtain airbag apparatus. This design comprises middle and rear pillar trims that are sturdier than the roof trim, allowing for the deployment of a curtain airbag that safely collapses towards the front within the vehicle cabin.

Career Highlights: Throughout his career, Tsuyoshi Yamagiwa has worked with several prominent companies, including Mazda Motor Corporation and Daikyonishikawa Corporation. His engineering expertise has played a vital role in the development of advanced vehicle safety features and interior designs.

Collaborations: Yamagiwa has collaborated with talented professionals such as Shouichirou Hidaka and Hiroaki Nakao. Together, they have collectively contributed to innovative solutions in the automotive industry, enhancing both safety and functionality.

Conclusion: Tsuyoshi Yamagiwa stands out as a pioneering inventor whose work has made significant strides in automotive safety innovations. His latest patents are a testament to his commitment to creating safer vehicle environments, reflecting the continual 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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