Nagano, Japan

Hisashi Miyazawa

This inventor holds 126 USPTO granted patents, plus 2 CIPO patents and 14 EPO patents, primarily in Ink Jet Technology (CPC class B41J2-175). Top assignees: Seiko Epson Corporation, Bridgestone Corporation, Silicon Valley Bank. Active years: 1991-2018.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hisashi Miyazawa. Retrieved from https://idiyas.com/inventor/hisashi-miyazawa

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


% Patents Active = 63.5


 

Average Co-Inventor Count = 2.6

ph-index = 26

Forward Citations = 2,157(Granted Patents)

Forward Citations (Not Self Cited) = 1,832(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • Suwq, JP (2000)
  • Isehara, JP (2005)
  • Nagano-ken, JP (2001 - 2011)
  • Suwa, JP (1991 - 2012)
  • Okaya, JP (2010 - 2016)
  • Nagano, JP (1991 - 2018)

Company Filing History:


Years Active: 1991-2018

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Areas of Expertise:
Ink Cartridge
Fluid Ejection Device
Maintenance Device
Wiper Device
Ink Supply Unit
Liquid Ejection Apparatus
Cleaning Method
Head Repairing Apparatus
Moisturizing Ink
Connection Unit
Ink Jet Recording Device
Humidification Member
126 patents (USPTO):Explore Patents

Certainly! Here is an article focusing on inventor Hisashi Miyazawa:

Title: Hisashi Miyazawa: Pioneering Renewable Energy Innovations

Introduction:

Hisashi Miyazawa, a renowned inventor hailing from Nagano, Japan, has been a driving force in the realm of renewable energy, showcasing unwavering dedication to innovation and a profound passion for creating a sustainable future. With a remarkable portfolio of 125 patents, Miyazawa's groundbreaking contributions are reshaping the landscape of renewable energy technologies globally.

Latest Patents:

Among his latest patents, Miyazawa has introduced revolutionary inventions such as the "Ink Cartridge for Ink Jet Recording Apparatus." This innovative cartridge features a differential pressure valve mechanism that ensures a consistent supply of ink to the recording head, regardless of ink variations or carriage movements. This cutting-edge technology guarantees an optimal ink pressure for seamless printing results.

Career Highlights:

Throughout his illustrious career, Hisashi Miyazawa has held pivotal roles at esteemed organizations like Seiko Epson Corporation and Bridgestone Corporation, where his innovative spirit and visionary mindset have driven significant advancements in renewable energy solutions. His profound understanding of technology and unwavering commitment to excellence have earned him a stellar reputation in the industry.

Collaborations:

Miyazawa's collaborative efforts have also been instrumental in fueling innovation. Working alongside talented individuals such as Satoshi Shinada and Takao Kobayashi, he has fostered a culture of creativity and excellence, inspiring the next generation of inventors and researchers to push the boundaries of what is possible in the field of renewable energy.

Conclusion:

In conclusion, Hisashi Miyazawa's remarkable journey as an inventor underscores his unwavering commitment to driving positive change through innovation. His relentless pursuit of sustainable solutions and groundbreaking inventions continues to inspire and shape the future of renewable energy technologies, making him a true trailblazer in his field.

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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