Osaka, Japan

Katsuhiko Kishimoto

This inventor holds 181 USPTO granted patents and 89 published patent applications and 1 EPO patent, primarily in Organic Electroluminescent Devices (CPC class H01L51-56). Top assignees: Sakai Display Products Corporation, Sharp Kabushiki Kaisha Corporation, Hon Hai Precision Industry Co., Ltd.. Active years: 1996-2025.

USPTO Granted Patents = 181 

% Patents Active = 43.6

 

Average Co-Inventor Count = 1.6

ph-index = 10

Forward Citations = 681(Granted Patents)

Forward Citations (Not Self Cited) = 573(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • Nara-ken, JP (2001 - 2002)
  • Nara, JP (1996 - 2013)
  • Oskaka, JP (2019)
  • Osaka, JP (2013 - 2023)
  • Sakai, JP (2019 - 2024)

Company Filing History:


Years Active: 1996-2025

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Areas of Expertise:
Organic Electroluminescent Device
Vapor Deposition
Display Apparatus
Thin Film Encapsulation
Substrate Sealing
Flexible OLED
Deposition Mask
Light Emitting Element
Manufacturing Method
Surface Roughness
Color Uniformity
Electrode Design
181 patents (USPTO):Explore Patents

Title: Katsuhiko Kishimoto: Innovating the Future of Organic EL Displays

Introduction:

Katsuhiko Kishimoto, a prolific inventor hailing from Osaka, Japan, has made significant contributions to the field of organic EL (electroluminescent) displays. With an impressive portfolio of 172 patents, Kishimoto's expertise lies in developing display technologies with enhanced color and luminance uniformity. This article aims to delve into his latest patents, career highlights, notable collaborations, and overall impact on the industry.

Latest Patents:

Among Kishimoto's recent patent filings, two noteworthy innovations stand out. The first is an Organic EL Display Apparatus with Suppressed Color and/or Luminance Non-Uniformity. This invention involves a planarizing layer that ensures a smooth surface for the organic light emitting element, resulting in improved color and luminance uniformity. The second patent focuses on an Organic Electroluminescent Device with an Organic Flattening Layer, enhancing the evenness of the display by utilizing interlayer insulation layers with flush contact parts.

Career Highlights:

Kishimoto's impressive career spans across renowned companies in the display industry. He has significantly contributed to the growth and development of companies like Sakai Display Products Corporation and Sharp Kabushiki Kaisha Corporation.

Collaborations:

Throughout his journey, Kishimoto has worked closely with esteemed colleagues, including Kohichi Tanaka and Susumu Sakio. These collaborations have undoubtedly played a vital role in the successful development and commercialization of his inventions.

Conclusion:

Katsuhiko Kishimoto has emerged as a prominent figure in the realm of organic EL displays. With an extensive patent portfolio and his innovative contributions to the field, he has propelled advancements in color and luminance uniformity, thereby enhancing the user experience of such displays. His collaborations with industry experts have further amplified the impact of his work. As we move forward, Kishimoto's inventions hold the potential to revolutionize the display industry and pave the way for even more advanced and visually stunning display technologies.

Profile summary based on public USPTO records.
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