Kanagawa, Japan

Satoko Shitagaki

This inventor holds 166 USPTO granted patents and 20 published patent applications and 12 EPO patents, primarily in Light-Emitting Devices (CPC class H01L51-0072). Top assignees: Semiconductor Energy Laboratory Co., Ltd., Semiconductor Energy Laboratory Co., Ltd.. Active years: 2005-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Satoko Shitagaki. Retrieved from https://idiyas.com/inventor/satoko-shitagaki

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

USPTO Granted Patents = 166 

% Patents Active = 74.1

 

Average Co-Inventor Count = 4.2

ph-index = 24

Forward Citations = 2,537(Granted Patents)

Forward Citations (Not Self Cited) = 1,914(Dec 10, 2025)


Inventors with similar research interests:

🔬 See more inventors

Location History:

  • Atsugi, JP (2005 - 2015)
  • Isehara, JP (2011 - 2020)
  • Kanagawa, JP (2006 - 2024)

Company Filing History:


Years Active: 2005-2026

Loading Chart...
Loading Chart...
Areas of Expertise:
Light-Emitting Element
Organic Compound
Electronic Device
Lighting Device
Display Device
Carbazole Derivative
Fluorene Derivative
Electronic Appliance
Exciplex Formation
Novel Organic Compound
166 patents (USPTO):Explore Patents

Title: Satoko Shitagaki: Illuminating Innovation in Light-Emitting Technology

Introduction:

Satoko Shitagaki, a talented inventor hailing from Kanagawa, Japan, has made significant contributions to the field of light-emitting technology. As an expert in the development of light-emitting elements and devices, Shitagaki's work focuses on creating low-voltage, high-efficiency solutions for electronic appliances and lighting devices. With over 151 patents to their name, this article delves into Shitagaki's latest patents, career highlights, and collaborations.

Latest Patents:

Among Shitagaki's recent patents is the development of a groundbreaking light-emitting element. This element offers exceptional performance by utilizing a combination of organic compounds with specific electron-transport and hole-transport properties. By introducing a third organic compound, capable of converting triplet excitation energy into light emission, the light-emitting element achieves low driving voltage and high emission efficiency. Shitagaki's ingenuity in this area opens up new possibilities for energy-efficient lighting solutions.

Another notable patent by Shitagaki involves the design of a light-emitting device. This device incorporates a light-emitting layer comprising a guest, n-type host, and p-type host between two electrodes. The energy difference between the triplet excited state and ground state of the n-type host (or p-type host) and the guest plays a crucial role in achieving efficient light emission. Shitagaki's expertise is evident, as the patent explores various factors like LUMO (lowest unoccupied molecular orbital) and HOMO (highest occupied molecular orbital) levels to optimize the device's performance.

Career Highlights:

Satoko Shitagaki is an esteemed member of the Semiconductor Energy Laboratory Co., Ltd., a prominent organization dedicated to semiconductor research and innovation. Their commitment to pushing the boundaries of technology aligns perfectly with Shitagaki's passion for creating advanced light-emitting solutions. Within the company, Shitagaki has demonstrated exceptional expertise, leading to the successful development and patenting of numerous innovations.

Collaborations:

Shitagaki's remarkable achievements would not have been possible without the support and collaboration of their talented colleagues. Notably, Satoshi Seo and Nobuharu Ohsawa have worked alongside Shitagaki, contributing their expertise and insights to various projects. Their collaborative efforts have resulted in the creation of cutting-edge inventions and patents that pave the way for future advancements in light-emitting technology.

Conclusion:

Satoko Shitagaki's impressive repertoire of patents, coupled with their dedication to enhancing light-emitting technology, underscore their status as an exceptional innovator. Through their inventions, including the development of a new light-emitting element and device, Shitagaki has contributed significantly to the world of electronic appliances and lighting devices. As their career continues to flourish at the Semiconductor Energy Laboratory Co., Ltd., we can eagerly anticipate further groundbreaking inventions from this talented 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…