Takeo Yamaguchi

This inventor holds 19 USPTO granted patents and 6 published patent applications and 7 EPO patents, primarily in 3D Printing Technology. Top assignees: Ricoh Company, Ltd., Teijin Limited, Toyo Ink Manufacturing Company. Active years: 1994-2026.

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

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

USPTO Granted Patents = 19 (Patent Applications = 6)

% Patents Active = 73.7

EPO Patents = 7 (Patent Applications = 13)

Average Co-Inventor Count = 2.9

ph-index = 5

Forward Citations = 77(Granted Patents)

Location History:

Kamiitabashi, JP (1994)
Yokohama, JP (2007)
Kanagawa, JP (2008 - 2020)
Tokyo, JP (1997 - 2024)

Company Filing History:

Toyo Ink Manufacturing Company

patents

4. 2 out of 20

Kanagawa Institute of Industrial Science and Technology

patents

5. 1 out of 1

Cyber Gadget Holdings Corporation

patent

6. 1 out of 591

Tokyo Institute of Technology

where one patent can have more than one assignee

Years Active: 1994-2026

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Areas of Expertise:

Composite Membrane

Stereoscopic Modeling

3D Object Production

Fuel Cell

Textile Printing

Electrophotographic Toner

Catalyst Layer

Liquid Material

High Dielectric Polymer

Image Forming Apparatus

Curable Liquid Resin

Glass Object Manufacturing

19 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12573652 - Substrate for composite membrane (2026-03-10),

2. 11929531 - Composite membrane (2024-03-12),

3. D987724 - Video game controller (2023-05-30),

4. 11276871 - Electrolyte membrane and method for producing same (2022-03-15),

5. 10767071 - Liquid material for forming three-dimensional object and material set for forming three-dimensional object, three-dimensional object producing method and three-dimensional object producing apparatus (2020-09-08),

6. 10464241 - Stereoscopic modeling apparatus, method of manufacturing stereoscopic modeled product, and non-transitory recording medium (2019-11-05),

7. 10442141 - Stereoscopic modeling apparatus and stereoscopic modeling method (2019-10-15),

8. 10233110 - Material set for manufacturing glass object, liquid material for manufacturing glass object, method of manufacturing glass object, glass object, and device for manufacturing glass object (2019-03-19),

9. 10226918 - Three-dimensional object formation powder material, three-dimensional object formation material set, and three-dimensional object production method (2019-03-12),

10. 9799894 - Catalyst layer for gas diffusion electrode, method for manufacturing the same, membrane electrode assembly, and fuel cell (2017-10-24),

11. 9605378 - Textile printing method, inkjet ink for textile printing, and electrophotographic toner for textile printing (2017-03-28),

12. 7344791 - Electrolytic membrane for fuel cell and its manufacturing method, and fuel cell and its manufacturing method (2008-03-18),

13. 7340204 - Color image forming apparatus and process cartridge therefor (2008-03-04),

14. 7215912 - Intermediate transfer medium and image forming apparatus using the intermediate transfer medium (2007-05-08),

15. 6284424 - Electrophotographic toner and image forming method and apparatus using the toner (2001-09-04),

Title: Takeo Yamaguchi: A Pioneer in Innovative Patents

Introduction

Takeo Yamaguchi, based in Tokyo, Japan, is a distinguished inventor known for his significant contributions to the field of technology and materials science. With an impressive portfolio of 18 patents, Yamaguchi has established himself as a leading figure in the development of innovative solutions.

Latest Patents

Among his recent inventions, Yamaguchi's patent for a composite membrane stands out. This invention comprises a substrate that includes a microporous polyolefin membrane, designed to carry a hydrophilic resin compound within its pores. The specifications reveal that the average pore diameter ranges from 1 nm to 50 nm, while the porosity varies between 50% to 78%. Additionally, the membrane thickness is defined between 1 μm to 12 μm. Notably, when a mixed solution of ethanol and water (in a volume ratio of 1/2) is dripped onto the unmodified surface of the membrane, specific contact angles are observed, ensuring optimal performance characteristics in various applications. Furthermore, Yamaguchi has also developed a video game controller that showcases his versatility in addressing different technological needs.

Career Highlights

Throughout his career, Takeo Yamaguchi has worked with renowned companies, further enhancing his expertise and influence in the industry. Notably, he has been associated with Ricoh Company, Ltd. and Toyo Ink Manufacturing Company, where he collaborated on cutting-edge projects that bridged technology and innovation.

Collaborations

Yamaguchi has worked alongside talented professionals, including his coworkers Miki Kawashima and Toru Kurihashi. Their collaborative efforts have contributed to advancements in the inventions and patents he has developed, fostering innovation in their respective fields.

Conclusion

Takeo Yamaguchi’s relentless pursuit of innovation has resulted in a remarkable portfolio of patents that reflect his dedication to pushing the boundaries of technology. His groundbreaking work on composite membranes and video game controllers not only demonstrates his inventive spirit but also his significant impact on the industry. As he continues to innovate, Yamaguchi remains a key figure to watch in the evolving landscape of technology.

Profile summary based on public USPTO records.