Azumino, Japan

Eiju Hirai

USPTO Granted Patents = 126 

 

Average Co-Inventor Count = 3.3

ph-index = 5

Forward Citations = 125(Granted Patents)

Forward Citations (Not Self Cited) = 108(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Nagano-ken, JP (2008)
  • Fujimi, JP (2009 - 2011)
  • Minamiminowa, JP (2013)
  • Fujimi-machi, JP (2011 - 2015)
  • Minamiminowa-mura, JP (2012 - 2016)
  • Okaya, JP (2012 - 2018)
  • Minowa-machi, JP (2015 - 2018)
  • Suwa, JP (2018)
  • Nagano, JP (2018)
  • Azumino, JP (2017 - 2024)

Company Filing History:


Years Active: 2008-2025

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Areas of Expertise:
Liquid Ejecting Head
Liquid Ejecting Apparatus
Piezoelectric Device
Piezoelectric Actuator
Mems Device
Liquid Discharge Device
Liquid Discharge Head
Ultrasonic Device
Manufacturing Method
Electronic Device
Liquid Ejection Method
Wiring Substrate
126 patents (USPTO):Explore Patents

Title: Eiju Hirai: Pioneering Innovations in Liquid Ejecting Technology

Introduction:

Meet Eiju Hirai, a brilliant inventor hailing from Azumino, Japan. With an impressive portfolio of 111 patents, Hirai has made significant contributions to the field of liquid ejecting technology. His latest patents demonstrate his expertise in creating advanced liquid ejecting heads and apparatus. Let's explore his groundbreaking work and discover more about his career highlights and collaborations.

Latest Patents:

Hirai's recent patents showcase his deep understanding of the intricacies involved in liquid ejecting systems. Among his latest inventions is a liquid ejecting head that incorporates a piezoelectric device, vibration plate, pressure chamber plate, and a wiring board. This innovative design optimizes the liquid ejection process, resulting in enhanced precision and efficiency.

Additionally, another recent patent introduces a liquid ejecting head featuring multiple pressure chambers and nozzle channels. This design allows for precise control over liquid ejection by utilizing different communication channels within the head. This advancement enables improved performance and versatility in various liquid ejection applications.

Career Highlights:

Eiju Hirai's professional journey has been closely linked with Seiko Epson Corporation, a renowned technology company based in Japan. He has dedicated his expertise and creativity to this prestigious organization, pushing the boundaries of liquid ejecting technology.

Throughout his career, Hirai has consistently proven himself as a visionary inventor, contributing significantly to the growth and development of Seiko Epson Corporation. His 111 patents stand as a testament to his unwavering commitment to innovation and excellence.

Collaborations:

In his pursuit of groundbreaking innovations, Hirai has collaborated with talented individuals within Seiko Epson Corporation. Notably, he has worked closely with Motoki Takabe and Yoichi Naganuma, two prominent coworkers who have contributed their exceptional skills to the team. This collaborative environment has fostered a culture of innovation, allowing them to combine their expertise and create remarkable liquid ejecting solutions.

Conclusion:

Eiju Hirai's relentless pursuit of innovation has marked him as a trailblazer in the field of liquid ejecting technology. With an impressive portfolio of 111 patents, his inventions at Seiko Epson Corporation have undoubtedly shaped the industry.

Through his latest patents, Hirai has showcased his ability to design advanced liquid ejecting heads and apparatus, emphasizing precision, efficiency, and versatility. Collaborating with fellow inventors, such as Motoki Takabe and Yoichi Naganuma, further enriches his contributions and fosters a culture of innovation.

Eiju Hirai's exceptional career and innovative mindset position him as a valued contributor to the world of liquid ejecting technology. We eagerly anticipate his future endeavors and the remarkable inventions he will continue to offer.

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