Toyota, Japan

Akihiko Ichikawa

This inventor holds 16 USPTO granted patents and 7 EPO patents, primarily in Vehicle Transmission. Top assignees: Toyota Jidosha Kabushiki Kaisha, Toyota Motorsport Gmbh, Kabushiki Kaisha Toyota Chuo Kenkyusho. Active years: 1990-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Akihiko Ichikawa. Retrieved from https://idiyas.com/inventor/akihiko-ichikawa

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

Calculating rank

% Patents Active = 37.5

 

Average Co-Inventor Count = 6.3

ph-index = 5

Forward Citations = 46(Granted Patents)


Location History:

  • Hadano, JP (2004)
  • Aichi, JP (2010)
  • Nagoya, JP (2010 - 2019)
  • Toyota, JP (1990 - 2021)

Company Filing History:


Years Active: 1990-2021

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Areas of Expertise:
Dog Clutch
Gear Change Control
Control Apparatus
Vehicle Transmission
Lubricating Oil Composition
Driving Force Transmission
Shift Mechanism
Porous Ceramics
16 patents (USPTO):Explore Patents

Title: Akihiko Ichikawa: Innovator in Automotive Technology

Introduction

Akihiko Ichikawa is a prominent inventor based in Toyota, Japan. He has made significant contributions to the automotive industry, holding a total of 16 patents. His innovative designs focus on enhancing vehicle performance and efficiency.

Latest Patents

One of Ichikawa's latest patents is a dog clutch for vehicles. This invention includes gear-side meshing teeth on a shifting gear that is rotatable relative to a shaft. The dog clutch features a dog ring with a first and second ring, along with springs positioned between them. The first ring has meshing teeth that engage with the shifting gear, while the second ring also has meshing teeth for improved functionality. Another notable patent is a gear change control device. This device detects the gear stage of a transmission and measures the input rotation rate of the transmission and the engine. It includes a controller that adjusts the torque of a clutch during gear changes, ensuring smoother transitions.

Career Highlights

Ichikawa has worked with Toyota Motor Corporation, where he has been instrumental in developing advanced automotive technologies. His work has significantly impacted vehicle design and functionality, contributing to the company's reputation for innovation.

Collaborations

Ichikawa has collaborated with notable colleagues, including Jun Yabuta and Shinichi Takeuchi. Their combined expertise has fostered a creative environment that encourages groundbreaking advancements in automotive technology.

Conclusion

Akihiko Ichikawa's contributions to the automotive industry through his patents and collaborations highlight his role as a key innovator. His work continues to influence vehicle technology and design, paving the way for future advancements.

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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