Tokyo, Japan

Hiroyasu Tanaka

This inventor holds 208 USPTO granted patents and 8 published patent applications and 20 EPO patents, primarily in Nonvolatile Semiconductor Memory (CPC class H01L27-11582). Top assignees: Kabushiki Kaisha Toshiba, Jatco Corporation, Nissan Motor Company Limited. Active years: 2002-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyasu Tanaka. Retrieved from https://idiyas.com/inventor/hiroyasu-tanaka

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

Calculating rank
USPTO Granted Patents = 208 

% Patents Active = 82.2

 

Average Co-Inventor Count = 5.7

ph-index = 30

Forward Citations = 3,899(Granted Patents)

Forward Citations (Not Self Cited) = 3,607(Dec 10, 2025)


Inventors with similar research interests:

🔬 See more inventors

Location History:

  • Zama, JP (2002 - 2006)
  • Kanagawa-ken, JP (2006 - 2012)
  • Yokohama, JP (2012)
  • Kanagawa, JP (2004 - 2013)
  • Mie-ken, JP (2012 - 2016)
  • Chiba, JP (2016)
  • Yokkaichi Mie, JP (2019)
  • Atsugi, JP (2010 - 2020)
  • Fuji, JP (2005 - 2021)
  • Minato, JP (2014 - 2022)
  • Mie, JP (2018 - 2022)
  • Tokyo, JP (2009 - 2024)
  • Minato-ku, JP (2010 - 2024)
  • Yokkaichi, JP (2013 - 2024)

Company Filing History:


Years Active: 2002-2026

Loading Chart...
Loading Chart...
Areas of Expertise:
Nonvolatile Memory
Semiconductor Device
Manufacturing Method
Data Reading
Data Writing
Storage Device
Control Device
Automatic Transmission
Vehicle Control
Transistor
Memory Cell
Clutch Control
208 patents (USPTO):Explore Patents

Title: Hiroyasu Tanaka: Pioneering Innovator in Semiconductor Memory Devices

Introduction:

Hiroyasu Tanaka, a prolific inventor hailing from Tokyo, Japan, has made significant contributions to the field of semiconductor memory devices. With an outstanding 193 patents to his name, Tanaka's inventive prowess has pushed the boundaries of technology and enhanced the performance of memory storage solutions. This article explores Tanaka's latest patents, career highlights, and collaborations, highlighting his invaluable contributions to the industry.

Latest Patents:

One of Tanaka's recent patents is for a semiconductor memory device and the method for its manufacturing. This invention encompasses a connecting member comprising a semiconductor material, along with a layered structure consisting of alternating electrode films and insulating films. Tanaka's design includes three or more semiconductor pillars that pierce through the layered structure and the first insulating film, providing increased connectivity. Additionally, charge storage layers are strategically placed within the device to enhance its functionality.

Another notable patent by Tanaka is for a non-volatile semiconductor storage device and its manufacturing method. This innovation involves memory strings comprising electrically rewritable memory cells connected in series. Each memory string features columnar portions, coupling portions, charge storage layers, and conductive layers. The conductive layers not only envelop the columnar portions but also serve as gate electrodes for the memory cells, resulting in improved performance and reliability.

Career Highlights:

Throughout his illustrious career, Hiroyasu Tanaka has worked with esteemed organizations such as Toshiba Corporation (formerly known as Kabushiki Kaisha Toshiba) and Jatco Corporation. Tanaka's expertise and dedication to innovation have undoubtedly played a vital role in the development of cutting-edge memory technologies.

Collaborations:

Tanaka has had the privilege of collaborating with accomplished professionals in his field. Notable coworkers include Hideaki Aochi and Ryota Katsumata, both of whom have contributed their expertise to various innovative projects alongside Tanaka. These collaborations have fostered a dynamic environment for sharing ideas and pushing the boundaries of technological advancement.

Conclusion:

Hiroyasu Tanaka's remarkable career and exemplary patent portfolio demonstrate his unwavering commitment to revolutionizing semiconductor memory devices. Through his groundbreaking inventions, Tanaka has significantly advanced the capabilities of these crucial components in modern electronics. As an inventive genius, Tanaka's contributions continue to shape the landscape of memory storage technology, ensuring faster, more efficient, and reliable devices for the future.

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]
Loading…