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For the Inventor, By the Inventor

Kyoto, Japan

Takumi Yamaguchi

This inventor holds 60 USPTO granted patents and 5 published patent applications, primarily in Solid-State Imaging (CPC class H01M). Top assignees: Panasonic Corporation, Matsushita Electric Industrial Co., Ltd., Panasonic Intellectual Property Management Co., Ltd.. Active years: 1992-2023.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takumi Yamaguchi. Retrieved from https://idiyas.com/inventor/takumi-yamaguchi

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

USPTO Granted Patents = 60 

% Patents Active = 81.7

Average Co-Inventor Count = 3.0

ph-index = 12

Forward Citations = 464(Granted Patents)

Forward Citations (Not Self Cited) = 455(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Katano, JP (2001)
  • Neyagawa, JP (2001)
  • Kyoto, JP (1992 - 2023)

Company Filing History:

goldMedal31 out of 16,454 
 
Panasonic Corporation
 patents
silverMedal24 out of 27,375 
 
Matsushita Electric Industrial Co., Ltd.
 patents
bronzeMedal2 out of 13,338 
 
Panasonic Intellectual Property Management Co., Ltd.
 patents
4. 1 out of 1,524 
 
Nidec Corporation
 patents
5. 1 out of 3 
 
Rosnes Corporation
 patents
6. 1 out of 8,782 
 
Sanyo Electric Co., Ltd.
 patents
7. 1 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1992-2023

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Areas of Expertise:
Solid-State Imaging Device
Electrochemical Device
Capacitor
Signal Processing
Camera Technology
High-Speed Photography
Optical Interference Filter
Noise Reduction Circuit
AD Converter
Manufacturing Method
Imaging System
Infrared Sensor
60 patents (USPTO):Explore Patents
1. 11621424 - Electrochemical device and method for manufacturing electrochemical device (2023-04-04),
2. 11211602 - Electrochemical device (2021-12-28),
3. 11056757 - Manufacturing method of a radio-frequency member (2021-07-06),
4. 10029572 - Power source system for a vehicle (2018-07-24),
5. 8737041 - Capacitor and method of manufacturing the same (2014-05-27),
6. 8477478 - Capacitor (2013-07-02),
7. 8378401 - Solid state imaging apparatus, method for driving the same and camera using the same (2013-02-19),
8. 8208054 - Solid-state imaging device (2012-06-26),
9. 8134191 - Solid-state imaging device, signal processing method, and camera (2012-03-13),
10. 8130487 - Capacitor and method of manufacturing the same (2012-03-06),
11. 8115241 - Solid state imaging apparatus and method for fabricating the same (2012-02-14),
12. 8106431 - Solid state imaging apparatus, method for driving the same and camera using the same (2012-01-31),
13. 8084796 - Solid state imaging apparatus, method for driving the same and camera using the same (2011-12-27),
14. 8040418 - Solid state imaging device with readout control and output control (2011-10-18),
15. 8018510 - Summing signals in pixel units of solid-state imager (2011-09-13),

Title: Takumi Yamaguchi: Innovator in Electrochemical Devices

Introduction: Takumi Yamaguchi is a prominent inventor based in Kyoto, Japan, known for his significant contributions to the field of electrochemical devices. With an impressive portfolio of 60 patents, Yamaguchi continues to push the boundaries of innovation.

Latest Patents: Among his latest inventions, two notable patents stand out. The first, titled "Electrochemical device and method for manufacturing electrochemical device," outlines an electrochemical device comprising a positive electrode, a negative electrode, and a separator. In this invention, the positive electrode contains a positive current collector made of aluminum, a conductive polymer material layer, and an aluminum oxide layer that incorporates fluorine. The second patent, simply named "Electrochemical device," features a similar structure but innovates further with a barrier layer that exhibits conductivity and higher acid resistance than the positive current collector. This active design integrates a conductive polymer layer and emphasizes the use of aluminum as the primary metal for the positive current collector.

Career Highlights: Yamaguchi has had a fruitful career with notable companies such as Panasonic Corporation and Matsushita Electric Industrial Co., Ltd. His experience in these organizations has greatly influenced his inventive process, leading to the successful development of cutting-edge technologies in the field.

Collaborations: Throughout his career, Yamaguchi has collaborated with talented individuals, including Takahiko Murata and Shigetaka Kasuga. Together, they have fostered a creative environment that enhances their collective ability to innovate and develop new solutions.

Conclusion: Takumi Yamaguchi remains a pivotal figure in the realm of electrochemical devices, with a wealth of patents that underscore his inventive prowess. His ongoing efforts and collaborations continue to inspire advancement within the industry, making him a notable inventor to watch in the future.

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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