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For the Inventor, By the Inventor

Kanagawa, Japan

Akihiro Yamanaka

This inventor holds 57 USPTO granted patents and 1 EPO patent, primarily in Ink Jet Technology (CPC class B41J). Top assignees: Canon Kabushiki Kaisha, Jgc Corporation, Global Nuclear Fuel-Japan Co., Ltd.. Active years: 1986-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Akihiro Yamanaka. Retrieved from https://idiyas.com/inventor/akihiro-yamanaka

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

USPTO Granted Patents = 57

% Patents Active = 77.2


Average Co-Inventor Count = 3.9

ph-index = 21

Forward Citations = 1,244(Granted Patents)

Forward Citations (Not Self Cited) = 1,205(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Hiratsuka, JP (1990 - 1999)
  • Kawasaki, JP (1997 - 2008)
  • Kanagawa-ken, JP (2004 - 2010)
  • Yokohama, JP (1986 - 2012)
  • Kanagawa, JP (2003 - 2013)

Company Filing History:

goldMedal54 out of 92,994 
 
Canon Kabushiki Kaisha
 patents
silverMedal2 out of 165 
 
Jgc Corporation
 patents
bronzeMedal1 out of 6 
 
Global Nuclear Fuel-Japan Co., Ltd.
 patents

Years Active: 1986-2013

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Areas of Expertise:
Ink Jet Printer
Liquid Discharge Head
Recording Apparatus
Ink Container
Cartridge
Liquid Ejection
Micro-Electromechanical Device
Pressure Adjustment Chamber
Liquid Supply System
Manufacturing Method
Image Recording
57 patents (USPTO):Explore Patents
1. 8425022 - Ink container for ink jet printer, holder for the container, carriage for the holder, and ink jet printer (2013-04-23),
2. 8096644 - Liquid ejection head and liquid ejection method (2012-01-17),
3. 7914137 - Ink container for ink jet printer, holder for the container, carriage for the holder, and ink jet printer (2011-03-29),
4. 7708365 - Liquid-discharge recording head (2010-05-04),
5. 7407275 - Ink container for ink jet printer, holder for the container, carriage for the holder and ink jet printer (2008-08-05),
6. 7407274 - Ink container for ink jet printer, holder for the container carriage for the holder and ink jet printer (2008-08-05),
7. 7401909 - Ink container for ink jet printer, holder for the container, carriage for the holder and ink jet printer (2008-07-22),
8. 7303260 - Liquid ejection recording head (2007-12-04),
9. 7300137 - Liquid-discharge recording head (2007-11-27),
10. 7150519 - Ink jet recording apparatus (2006-12-19),
11. 7044588 - Ink jet head storing structure and liquid filling method (2006-05-16),
12. 6945643 - Ink jet head storing structure and liquid filling method (2005-09-20),
13. 6945633 - Liquid discharge head substrate, liquid discharge head, liquid discharge apparatus having these elements, manufacturing method of liquid discharge head, and driving method of the same (2005-09-20),
14. 6851795 - Cartridge with opposed electrical and ink connection portions, and carriage and ink jet recording apparatus for same (2005-02-08),
15. 6847695 - Nuclear fuel assembly lower tie-plate and method of its assembling (2005-01-25),

Title: Akihiro Yamanaka: Innovator in Inkjet Printing Technology

Introduction

Akihiro Yamanaka, based in Kanagawa, Japan, is a prolific inventor known for his significant contributions to inkjet printing technology. With an impressive portfolio of 57 patents, he has made advancements that enhance the efficiency and performance of inkjet printers.

Latest Patents

Among his latest inventions are several groundbreaking patents that focus on improving ink dispensing and print head designs. One of his notable patents is for an ink container designed for inkjet printers. This innovative container allows for a secure and efficient ink supply to the inkjet head, incorporating features such as an ink supply port, an air vent for fluid communication with the ambient environment, and a claw-like projection for secure attachment. Another key patent involves a liquid ejection head and method that addresses the issues of cavitation and durability by ensuring that the generated bubble in the print head communicates efficiently with the air, resulting in improved performance and reliability of ink ejection.

Career Highlights

Throughout his career, Akihiro Yamanaka has held important positions in well-known companies, including Canon Inc. and JGC Corporation. His work at these companies has been pivotal in developing advanced inkjet printing technologies that are widely used in today's printing industry. His focus on innovation has not only elevated industry standards but also propelled further research and development in this field.

Collaborations

Yamanaka has collaborated with several esteemed colleagues throughout his career, including Keiichiro Tsukuda and Naoki Tashiro. These collaborations have assisted in enhancing the collective expertise within the realm of inkjet technology, resulting in several patented solutions that address contemporary challenges in printing processes.

Conclusion

Akihiro Yamanaka's extensive experience and innovative spirit have made significant contributions to the field of inkjet printers. His notable patents reflect a deep understanding of the mechanics of printing technology and a continuous commitment to improving product performance. As a leading inventor, Yamanaka remains a key figure in the advancement of printing solutions that serve various industries around the world.

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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