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For the Inventor, By the Inventor

Kanagawa, Japan

Takuro Sekiya

This inventor holds 67 USPTO granted patents and 2 EPO patents, primarily in Inkjet Technology (CPC class 347 ). Top assignee: Ricoh Company, Ltd.. Active years: 1985-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takuro Sekiya. Retrieved from https://idiyas.com/inventor/takuro-sekiya

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

USPTO Granted Patents = 67

% Patents Active = 56.7


Average Co-Inventor Count = 1.5

ph-index = 20

Forward Citations = 966(Granted Patents)

Forward Citations (Not Self Cited) = 595(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Yokoyama, JP (1995)
  • Yokohama, JP (1985 - 2014)
  • Kanagawa, JP (2002 - 2015)

Company Filing History:

goldMedal67 out of 28,934 
 
Ricoh Company, Ltd.
 patents

Years Active: 1985-2015

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Areas of Expertise:
Inkjet Head
High-Speed Printing
Functional Device Fabrication
Image Formation
Electron-Emitting Device
Optical Recording
Liquid Jet Apparatus
Color Inkjet
Circuit Board Manufacturing
Telecommunication Systems
Surface-Emission Laser Diode
Recording Medium
67 patents (USPTO):Explore Patents
1. 8926071 - Liquid-jet recording apparatus including multi-nozzle inkjet head for high-speed printing (2015-01-06),
2. 8721056 - Continuous multi-nozzle inkjet recording apparatus (2014-05-13),
3. 8517530 - Fabrication of functional device mounting board making use of inkjet technique (2013-08-27),
4. 8086141 - Electric charging apparatus and image forming apparatus using the same (2011-12-27),
5. 8081331 - Image forming apparatus (2011-12-20),
6. 8058791 - Electronic circuit board manufacturing apparatus and electronic circuit board (2011-11-15),
7. 8052274 - Ink-jet recording apparatus, ink-jet copier and recording medium (2011-11-08),
8. 8002008 - Conveyance system having identification attaching unit (2011-08-23),
9. 7884537 - Pattern substrate including conductive pattern of overlapping circular patterns disposed on substrate (2011-02-08),
10. 7738261 - Functional device fabrication apparatus and functional device fabricated with the same (2010-06-15),
11. 7728503 - Electron emission element, charging device, process cartridge, and image forming apparatus (2010-06-01),
12. 7715062 - Image reading apparatus and recording apparatus including image reading apparatus (2010-05-11),
13. 7673980 - Ink-jet recording apparatus, ink-jet copier and recording medium (2010-03-09),
14. 7651195 - Color inkjet recording apparatus and copier with increased reliability (2010-01-26),
15. 7637606 - Liquid jet apparatus, liquid jet head, and liquid (2009-12-29),

Title: Takuro Sekiya: A Pioneer in Liquid-Jet Recording Technologies

Introduction

Takuro Sekiya, based in Kanagawa, Japan, is a distinguished inventor known for his significant contributions to the field of liquid-jet recording technologies. With an impressive portfolio of 67 patents, Takuro has established himself as a leading innovator within the industry.

Latest Patents

Among his latest patents, Takuro has focused on enhancing printing technology through the development of the Liquid-Jet Recording Apparatus, which includes a multi-nozzle inkjet head for high-speed printing. This apparatus incorporates various innovative features such as a liquid-jet recording head unit, conveyance unit, and several additional components that optimize ink droplet ejection and collection on the recording medium. Another notable invention is the Continuous Multi-Nozzle Inkjet Recording Apparatus, employing a gas flow applicator and heating unit to precisely control ink droplet formation, ensuring high-quality image printing.

Career Highlights

Takuro Sekiya has built a remarkable career at Ricoh Company, Ltd., where he has played a vital role in advancing imaging technologies. His expertise in liquid-jet recording has not only led to a plethora of patents but also positioned him as a key player in the design of cutting-edge printing solutions.

Collaborations

Throughout his career, Takuro has collaborated with notable colleagues, including Kyuhachiro Iwasaki and Takashi Kimura. Together, they have contributed to various initiatives and projects that have further propelled the evolution of printing technology and enhanced the capabilities of liquid-jet recording systems.

Conclusion

Takuro Sekiya's innovative spirit and dedication to advancing liquid-jet recording technologies have left a lasting impact in the field. With a wealth of patents to his name, his work continues to influence the future of high-speed printing and imaging solutions, cementing his legacy as a prominent figure in the world of inventions.

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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