Mobara, Japan

Takuo Kaitoh

This inventor holds 56 USPTO granted patents and 21 published patent applications and 1 EPO patent, primarily in Display Technology. Top assignees: Hitachi Displays, Ltd., Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.. Active years: 1997-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takuo Kaitoh. Retrieved from https://idiyas.com/inventor/takuo-kaitoh

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

USPTO Granted Patents = 56 

% Patents Active = 89.3

 

Average Co-Inventor Count = 3.8

ph-index = 5

Forward Citations = 102(Granted Patents)

Forward Citations (Not Self Cited) = 99(Dec 10, 2025)


Location History:

  • Mobara, JP (1997 - 2016)
  • Tokyo, JP (2022 - 2024)

Company Filing History:


Years Active: 1997-2026

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Areas of Expertise:
Display Device
Liquid Crystal Element
Semiconductor Device
Thin Film Transistor
Manufacturing Method
Multi-Gate TFTs
Electronic Apparatus
LDD Region
Pixel Region
Electronic Equipment
TFTs
Channel Regions
56 patents (USPTO):Explore Patents

Title: Takuo Kaitoh: A Pioneer in Semiconductor Technology

Introduction

Takuo Kaitoh, located in Mobara, Japan, is a renowned inventor and engineer known for his significant contributions to the field of semiconductor technology. With a remarkable portfolio of 53 patents, Kaitoh has developed innovative solutions that enhance the performance and reliability of thin-film transistors.

Latest Patents

Among his recent patents, one notable invention focuses on a semiconductor device aimed at suppressing changes in characteristics of thin-film transistors (TFTs) that utilize an oxide semiconductor film. This invention addresses the issue of oxygen being extracted by metal electrodes, which can adversely affect the performance of the semiconductor. The design includes a semiconductor device comprising a TFT with a gate insulating film above a gate electrode and an oxide semiconductor film that contains channel, drain, and source regions. The invention further incorporates a metal nitride film strategically positioned above the gate electrode to protect the channel region from potential degradation.

Another key patent details a semiconductor device that consists of a thin-film transistor with an oxide semiconductor layer. This design includes essential components such as the gate insulating layer, a gate electrode, a source electrode; and a drain electrode, all contributing to the effective functioning of the TFT.

Career Highlights

Kaitoh has played a pivotal role in the advancement of display technology through his work at notable companies, including Hitachi Displays, Ltd. and Japan Display Inc. He has been instrumental in pushing the boundaries of semiconductor innovations, leading to significant breakthroughs in device performance.

Collaborations

Throughout his career, Takuo Kaitoh has collaborated with distinguished professionals in the field, including Hidekazu Miyake and Toshio Miyazawa. These collaborations have fostered an environment of creativity and innovation, resulting in several patents and advancements in semiconductor technologies.

Conclusion

Takuo Kaitoh's contributions to semiconductor technology are noteworthy, and his extensive patent portfolio reflects his dedication to innovation and development. As technology continues to evolve, the impact of his inventions will likely influence the future of electronics and high-performance devices.

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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