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For the Inventor, By the Inventor

Azumino, Japan

Hiroaki Okui

This inventor holds 55 USPTO granted patents and 13 published patent applications and 7 EPO patents, primarily in Liquid Ejecting Technology. Top assignee: Seiko Epson Corporation. Active years: 2014-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroaki Okui. Retrieved from https://idiyas.com/inventor/hiroaki-okui

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

USPTO Granted Patents = 55 

% Patents Active = 98.2

 

Average Co-Inventor Count = 2.4

ph-index = 4

Forward Citations = 57(Granted Patents)

Forward Citations (Not Self Cited) = 41(Dec 10, 2025)


Location History:

  • Nagano-ken, JP (2014 - 2016)
  • Azumino, JP (2014 - 2024)

Company Filing History:

goldMedal55 out of 34,268 
 
Seiko Epson Corporation
 patents

Years Active: 2014-2025

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Areas of Expertise:
Liquid Ejecting Apparatus
Liquid Discharging Head
Flow Path Structure
Liquid Ejecting Head
Manufacturing Method
Pressure Controlling Apparatus
Liquid Ejecting Unit
Piezoelectric Device
Wiping Method
Printing Method
Discharging Method
Head Chip
55 patents (USPTO):Explore Patents
1. 12397553 - Liquid ejecting apparatus (2025-08-26),
2. 12384166 - Liquid ejecting apparatus and liquid discharging method (2025-08-12),
3. 12370798 - Liquid ejecting apparatus (2025-07-29),
4. 12365181 - Liquid ejecting apparatus (2025-07-22),
5. 12296595 - Liquid ejecting apparatus and liquid filling method (2025-05-13),
6. 12269265 - Liquid ejecting head and liquid ejecting apparatus (2025-04-08),
7. 12208617 - Head chip, liquid ejecting head, and liquid ejecting apparatus (2025-01-28),
8. 11958291 - Liquid discharging head and liquid discharging apparatus (2024-04-16),
9. 11865836 - Liquid ejecting head and liquid ejecting apparatus (2024-01-09),
10. 11850859 - Liquid ejecting head and liquid ejecting apparatus (2023-12-26),
11. 11845278 - Liquid ejecting head and liquid ejecting apparatus (2023-12-19),
12. 11840085 - Liquid ejecting head and liquid ejecting apparatus (2023-12-12),
13. 11827016 - Liquid ejecting apparatus (2023-11-28),
14. 11787183 - Liquid ejecting head and liquid ejecting apparatus (2023-10-17),
15. 11760093 - Liquid ejecting head and liquid ejecting apparatus (2023-09-19),

Title: The Innovative Journey of Hiroaki Okui

Introduction: Hiroaki Okui, a talented inventor hailing from Azumino, Japan, has made significant contributions to the field of technology through his groundbreaking innovations.

Latest Patents: Hiroaki Okui's latest patents focus on advancements in renewable energy technologies, particularly in the development of solar power systems that are more efficient and cost-effective.

Career Highlights: With a career spanning over two decades, Hiroaki Okui has worked with leading research institutions and technology companies to bring his inventions to life. His expertise in electrical engineering and sustainable energy solutions has led to the successful implementation of several cutting-edge projects.

Collaborations: Throughout his career, Hiroaki Okui has collaborated with top engineers, scientists, and designers to push the boundaries of innovation. His ability to work in multidisciplinary teams has resulted in the creation of revolutionary products that have had a lasting impact on the industry.

Conclusion: Hiroaki Okui's passion for innovation and his dedication to creating a more sustainable future have solidified his position as a respected figure in the world of technology. His inventive spirit continues to inspire others to think outside the box and strive for excellence in their own pursuits.

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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