Tochigi, Japan

Masahiko Asahi

This inventor holds 7 USPTO granted patents and 1 EPO patent. Top assignees: Tochigi Fuji Sangyo Kabushiki Kaisha, Gkn Automotive Gmbh, Gkn Driveline Japan Ltd.. Active years: 1998-2023.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masahiko Asahi. Retrieved from https://idiyas.com/inventor/masahiko-asahi-dhhx2h1p

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

Calculating rank

% Patents Active = 57.1


Average Co-Inventor Count = 2.4

ph-index = 4

Forward Citations = 32(Granted Patents)


Location History:

  • Tochigi-ken, JP (1998 - 2006)
  • Tochigi-Chi, JP (2008)
  • Tochigi, JP (2012 - 2023)

Company Filing History:


Years Active: 1998-2023

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7 patents (USPTO):Explore Patents

Title: Masahiko Asahi: Innovator in Differential Technology

Introduction

Masahiko Asahi is a notable inventor based in Tochigi, Japan. He has made significant contributions to the field of differential technology, holding a total of seven patents. His innovative designs have advanced the functionality and efficiency of differential devices.

Latest Patents

Among his latest patents, the "Differential Device" stands out. This invention features an input case with an axially directed end face and a differential gear set that allows for differential motion between side gears. It includes a clutch structure that engages with dog teeth on an output case, enabling the coupling of the output case or the second side gear with the input case when engaged. The design incorporates an axially movable clutch member and an armature that interacts with a solenoid to set the clutch structure in mesh with the dog teeth. Additionally, a spring biases the clutch member in the opposite direction.

Another significant patent is the "Differential Case." This invention consists of a rotatable carrier with a cylindrical fitting face and a radially projecting flange. The case includes a cover that fits onto the flange and aligns with a butting face. A ring gear is fitted onto the carrier, and a weld metal unites the components, ensuring structural integrity and functionality.

Career Highlights

Masahiko Asahi has worked with prominent companies such as Tochigi Fuji Sangyo and GKN Driveline Japan Ltd. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects.

Collaborations

Throughout his career, Asahi has collaborated with notable individuals, including Noboru Higano and Isao Hirota. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Masahiko Asahi's contributions to differential technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the industry, showcasing the importance of innovation in engineering.

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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