Tokyo, Japan

Akira Nagumo

This inventor holds 61 USPTO granted patents and 4 published patent applications and 3 EPO patents, primarily in Image Forming Apparatus (CPC class B41J). Top assignees: Oki Data Corporation, Oki Electric Industry Co., Ltd., Oki Electric Industrial Co., Ltd.. Active years: 1988-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Akira Nagumo. Retrieved from https://idiyas.com/inventor/akira-nagumo

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

USPTO Granted Patents = 61 

% Patents Active = 59.0

 

Average Co-Inventor Count = 1.2

ph-index = 10

Forward Citations = 233(Granted Patents)

Forward Citations (Not Self Cited) = 195(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Hachioji, JP (2004 - 2011)
  • Gunma, JP (2012 - 2014)
  • Takasaki, JP (2013 - 2017)
  • Tokyo, JP (1988 - 2021)

Company Filing History:


Years Active: 1988-2021

Loading Chart...
Loading Chart...
Areas of Expertise:
Image Forming Apparatus
Drive Circuit
LED Array
Optical Print Head
Driving Device
Light Emitting Diode
Print Head
Semiconductor Device
Light Emission
Driving Apparatus
Light-Emitting Element
Temperature Compensation
61 patents (USPTO):Explore Patents

Title: Akira Nagumo: A Prolific Innovator in Tokyo

Introduction:

In the bustling innovation hub of Tokyo, resides a brilliant mind by the name of Akira Nagumo. With a remarkable track record of 61 patents to his name, Nagumo has made significant contributions to the fields of semiconductor manufacturing and light-emission drive circuits. This article delves into his latest patents, career highlights, noteworthy collaborations, and sheds light on the accomplishments of this remarkable inventor.

Latest Patents:

One of Nagumo's recent patents is titled "Method of manufacturing driven element chip, driven element chip, exposing device, and image forming apparatus." This patent reveals an innovative method of manufacturing driven element chips by dividing a semiconductor wafer into these chips. The method involves arrayed chip substrate portions with interconnects, dummy conductors, and clearances between adjacent chip substrate portions. This invention showcases Nagumo's proficiency in semiconductor manufacturing.

Additionally, Nagumo holds another patent for a "Light-emission drive circuit and image forming apparatus." This invention introduces a light-emission drive circuit comprising a power supply, a pull-up circuit, and a controller. By utilizing this circuit, a control signal is provided to drive a light-emitting section more efficiently. This patent highlights Nagumo's expertise in developing circuits for image forming devices.

Career Highlights:

During his illustrious career, Nagumo has worked with renowned companies such as Oki Data Corporation and Oki Electric Company Industry Co., Ltd. Nagumo's association with these companies showcases his expertise and dedication to innovating in the technology sector. His significant contributions have led to advancements and breakthroughs within the semiconductor and image forming industries.

Collaborations:

Throughout his career, Nagumo has had the opportunity to collaborate with notable colleagues in the field of innovation. Two of his notable coworkers include Jiro Tanuma and Shinichi Katakura. The collaboration between these brilliant minds has likely served as a catalyst for the development of groundbreaking inventions and technologies. Together, they have shared their knowledge and expertise to push boundaries and drive progress.

Conclusion:

Akira Nagumo, a prolific inventor hailing from Tokyo, has made significant contributions to the fields of semiconductor manufacturing and light-emission drive circuits. With a staggering portfolio of 61 patents, Nagumo's innovative ideas have led to advancements in manufacturing techniques and circuit designs. Throughout his career, Nagumo has worked alongside talented colleagues, such as Jiro Tanuma and Shinichi Katakura, fostering a collaborative environment that nurtures innovation. As we look to the future, we eagerly anticipate the next wave of contributions from this remarkable inventor.

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…