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For the Inventor, By the Inventor

Hitachi, Japan

Makoto Tsumura

This inventor holds 69 USPTO granted patents and 4 published patent applications, primarily in Liquid Crystal Displays (CPC class 3491). Top assignees: Hitachi, Ltd., Hitachi Displays, Ltd., Future Vision Inc.. Active years: 1986-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Makoto Tsumura. Retrieved from https://idiyas.com/inventor/makoto-tsumura

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

USPTO Granted Patents = 69 

% Patents Active = 65.2

Average Co-Inventor Count = 4.5

ph-index = 22

Forward Citations = 1,958(Granted Patents)

Forward Citations (Not Self Cited) = 1,940(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Ibaraki-ken, JP (2007)
  • Hitachi, JP (1986 - 2013)

Company Filing History:

goldMedal58 out of 42,740 
 
Hitachi, Ltd.
 patents
silverMedal4 out of 1,207 
 
Hitachi Displays, Ltd.
 patents
bronzeMedal2 out of 15 
 
Future Vision Inc.
 patents
4. 2 out of 365 
 
Hitachi Consumer Electronics Co., Ltd.
 patents
5. 2 out of 14 
 
Hitachi Haramachi Semi-Conductor, Ltd.
 patents
6. 1 out of 1,267 
 
Hitachi Koki Co., Ltd.
 patents
7. 1 out of 3,951 
 
Nitto-Denko Corporation
 patents
8. 1 out of 1,238 
 
Panasonic Liquid Crystal Display Co., Ltd.
 patents
9. 2 out of 834,570 
Other
 patents
where one patent can have more than one assignee

Years Active: 1986-2013

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Areas of Expertise:
Liquid Crystal Display
Image Display Device
Illumination Unit
Display Equipment
Luminous Intensity Control
Active Matrix LCD
Electroluminescence Panel
Optical Sheet
Back Light Device
Matrix Panel Display
Surface Light Source
Color Field Sequential Driving
69 patents (USPTO):Explore Patents
1. 8465168 - Lighting unit and display provided with the same (2013-06-18),
2. 8259257 - Back light device, liquid crystal display apparatus and image display apparatus using the same (2012-09-04),
3. 8177407 - Plane-like lighting units and display equipment provided therewith (2012-05-15),
4. 8070344 - Plane-like lighting units and display equipment provided therewith (2011-12-06),
5. 7990491 - Liquid crystal display device (2011-08-02),
6. 7928952 - Image display device (2011-04-19),
7. 7905616 - Illumination unit and display unit incorporating the same (2011-03-15),
8. 7855760 - Liquid crystal display apparatus (2010-12-21),
9. 7843525 - Liquid crystal display appliance (2010-11-30),
10. 7784986 - Plane-like lighting units and display equipment provided therewith (2010-08-31),
11. 7773194 - Liquid crystal display device (2010-08-10),
12. 7679598 - Image display device (2010-03-16),
13. 7633094 - Electroluminescence display panel, image display, and method for manufacturing them (2009-12-15),
14. 7495719 - Device capable of switching between an image display status and a mirror status, and an instrument disposed therewith (2009-02-24),
15. 7463235 - Light illumination apparatus and liquid crystal display apparatus using the same (2008-12-09),

Title: Pioneering Inventor Makoto Tsumura: Shaping the Future of Innovation

Introduction:

Makoto Tsumura, a visionary inventor based in Hitachi, Japan, has been at the forefront of technological advancement, pushing the boundaries of what is achievable in the digital age. With a remarkable 68 patents to his name, Tsumura's passion for innovation has been instrumental in shaping the future of technology.

Latest Patents:

One of Tsumura's recent patents includes a cutting-edge Lighting Unit and Display System. This innovative lighting unit can control luminance in multiple block areas independently, minimizing luminance irregularities caused by discreetly arranged light sources. By reducing the number of parts, Tsumura's invention enhances efficiency and quality in display technologies.

Another noteworthy patent by Tsumura is the Backlight Device for Liquid Crystal Display Apparatus. This invention features a sophisticated light source system, utilizing LEDs of different colors arranged strategically on a wiring board to offset light distribution deviations. Tsumura's meticulous attention to detail is evident in this groundbreaking display technology.

Career Highlights:

Throughout his illustrious career, Makoto Tsumura has made significant contributions to leading companies such as Hitachi Co., Ltd and Hitachi Displays, Ltd. His innovative spirit and dedication to excellence have earned him recognition as a trailblazer in the field of technology.

Collaborations:

Tsumura's collaborative efforts with esteemed colleagues Ikuo Hiyama and Masaya Adachi have further amplified the impact of his inventions. Together, they have pioneered groundbreaking solutions in display technologies, setting new standards for innovation in the industry.

Conclusion:

Makoto Tsumura's relentless pursuit of innovation and his commitment to pushing the boundaries of technology continue to inspire and shape the future of digital advancements. As a pioneering inventor in the digital age, Tsumura's legacy remains unparalleled, leaving an indelible mark on the world of innovation.

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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