Tokyo, Japan

Masahiko Akiyama

This inventor holds 57 USPTO granted patents and 2 EPO patents, primarily in Display Technology (CPC class F16H). Top assignees: Kabushiki Kaisha Toshiba, Honda Motor Co., Ltd., Denso Corporation. Active years: 1992-2025.

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

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


% Patents Active = 61.4

 

Average Co-Inventor Count = 2.3

ph-index = 22

Forward Citations = 1,803(Granted Patents)

Forward Citations (Not Self Cited) = 1,781(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Kawasaki, JP (1992)
  • Ota-ku, JP (1999)
  • Shimotsuke, JP (2012)
  • Ota, JP (2019)
  • Saitama, JP (2021)
  • Tokyo, JP (1995 - 2023)
  • Wako, JP (2013 - 2023)

Company Filing History:


Years Active: 1992-2025

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Areas of Expertise:
Active Matrix Display
Liquid Crystal Display
Pattern Formation
Thin Film Transistor
Electronic Device
Sensor Technology
Motor Control
Phase Current Estimation
Vehicle Control
Flexible Display
Height Control Member
Display Input System
57 patents (USPTO):Explore Patents

Title: Masahiko Akiyama: A Pioneer in Shift Range Control Technology

Introduction: Masahiko Akiyama, an accomplished inventor based in Tokyo, Japan, holds an impressive portfolio of 56 patents. His innovations primarily revolve around shift range control devices, significantly contributing to the automotive industry. His work demonstrates a profound understanding of motor control systems, essential for enhancing vehicle performance and efficiency.

Latest Patents: Among Akiyama's latest innovations are two notable patents: the "Shift Range Control Device" and the "Shift Range Control Apparatus." The Shift Range Control Device operates by switching a shift range through precise motor driving control. It incorporates a learning unit that determines position correction values based on reference angles when the output shaft signal is accessible post activation of a start switch. The first reference angle corresponds to the motor's position when a signal changes in reaction to motor rotation in one direction, while the second reference angle indicates the opposite motor movement. The device optimally sets a target motor angle by storing normal state time correction values.

The Shift Range Control Apparatus further refines this technology by managing a shift range switching system. It calculates motor angles from rotation angle signals, retrieves output shaft signals via sensors, and dynamically adjusts motor driving to achieve desired rotation angles. It is designed to ensure that the target rotation angle remains within set limits based on the positions of shift ranges prior to and following transition, demonstrating Akiyama's innovative approach to motor control and vehicle dynamics.

Career Highlights: Throughout his career, Masahiko Akiyama has significantly impacted the engineering landscape. His tenure at leading companies such as Toshiba Corporation and Honda Motor Co., Ltd. has cemented his reputation as a forward-thinking inventor. His patented technologies are integral to the advancement of automotive shift control systems, enhancing vehicle safety and user experience.

Collaborations: Akiyama has collaborated with esteemed professionals in the industry, including Yujiro Hara and Tsuyoshi Hioki. These partnerships have facilitated the exchange of ideas and technological advancements, leading to groundbreaking innovations in shift range control technology.

Conclusion: Masahiko Akiyama's contributions to the field of motor control and automotive engineering are notable for their complexity and practical application. With 56 patents to his name, he continues to push the boundaries of innovation, influencing the future of vehicular technology and seamless driving experiences. His work remains a testament to the significant impact of dedicated inventors in the ever-evolving industry landscape.

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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