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For the Inventor, By the Inventor

Tokyo, Japan

Toshimasa Ishigaki

This inventor holds 65 USPTO granted patents and 6 published patent applications, primarily in Liquid Crystal Displays (CPC class G02F). Top assignees: Japan Display Inc., Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.. Active years: 1989-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshimasa Ishigaki. Retrieved from https://idiyas.com/inventor/toshimasa-ishigaki

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

USPTO Granted Patents = 65 

% Patents Active = 92.3

Average Co-Inventor Count = 3.8

ph-index = 4

Forward Citations = 120(Granted Patents)

Forward Citations (Not Self Cited) = 101(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Chiba, JP (1989 - 2019)
  • Minato-ku, JP (2020)
  • Tokyo, JP (2016 - 2024)

Company Filing History:

goldMedal52 out of 5,795 
 
Japan Display Inc.
 patents
silverMedal6 out of 1,207 
 
Hitachi Displays, Ltd.
 patents
bronzeMedal3 out of 1,238 
 
Panasonic Liquid Crystal Display Co., Ltd.
 patents
4. 2 out of 1,641 
 
Hitachi Chemical Company, Ltd.
 patents
5. 2 out of 42,731 
 
Hitachi, Ltd.
 patents
6. 2 out of 278 
 
Magnolia White Corporation
 patents
7. 1 out of 4 
 
Japan Display East Inc.
 patents
8. 2 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1989-2026

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Areas of Expertise:
Liquid Crystal Display
Detection Device
Electrode Substrate
Color Filter
Manufacturing Method
Display Device
Input Device
Partition
Display Apparatus
Display Technology
Substrate Manufacturing
Electrode Manufacturing
65 patents (USPTO):Explore Patents
1. 12764870 - Detection device (2026-10-13),
2. 12710677 - LIQUID CRYSTAL DISPLAY DEVICE (2026-08-18),
3. 12193165 - Detection device (2025-01-07),
4. 12147133 - Liquid crystal display device (2024-11-19),
5. 11914254 - Liquid crystal display device (2024-02-27),
6. 11818848 - Detection device (2023-11-14),
7. 11650467 - Liquid crystal display device (2023-05-16),
8. 11474403 - Liquid crystal display device (2022-10-18),
9. 11330720 - Detection device (2022-05-10),
10. 11175546 - Liquid crystal display device (2021-11-16),
11. 10877337 - Liquid crystal display device (2020-12-29),
12. 10768761 - Detection device (2020-09-08),
13. 10698512 - Electrode substrate, display device, input device and method of manufacturing electrode substrate (2020-06-30),
14. 10690972 - Liquid crystal display device (2020-06-23),
15. 10528205 - Display (2020-01-07),

Title: The Innovative Journey of Toshimasa Ishigaki

Introduction: Toshimasa Ishigaki is a pioneering inventor hailing from Tokyo, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Toshimasa Ishigaki holds several patents in the areas of robotics, artificial intelligence, and renewable energy, showcasing his continuous dedication to pushing the boundaries of technological advancement.

Career Highlights: With a career spanning over two decades, Ishigaki has worked with leading tech companies in Japan, spearheading projects that have revolutionized industries and improved the quality of life for many.

Collaborations: Throughout his career, Toshimasa Ishigaki has collaborated with top researchers, engineers, and scientists both locally and internationally, fostering a culture of innovation and knowledge exchange.

Conclusion: Toshimasa Ishigaki's relentless pursuit of innovation and his passion for creating solutions to complex challenges have solidified his position as a visionary inventor in the global tech landscape.

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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