Azumino, Japan

Yasushi Yamazaki

This inventor holds 37 USPTO granted patents and 3 published patent applications and 2 EPO patents, primarily in Liquid Ejection Technology. Top assignees: Seiko Epson Corporation, Sony Corporation, Epson Imaging Devices Corporation. Active years: 2003-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasushi Yamazaki. Retrieved from https://idiyas.com/inventor/yasushi-yamazaki

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

USPTO Granted Patents = 37 

% Patents Active = 73.0


Average Co-Inventor Count = 1.8

ph-index = 8

Forward Citations = 245(Granted Patents)


Location History:

  • Suwa, JP (2003 - 2008)
  • Chino, JP (2010)
  • Azumino, JP (2009 - 2024)

Company Filing History:


Years Active: 2003-2025

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Areas of Expertise:
Liquid Ejecting Head
Piezoelectric Device
Electrophoretic Material
Solid-State Image Pickup
Electro-Optical Device
Display Device
Semiconductor Device
Active Matrix Substrate
Liquid Crystal Display
Electrophoresis Display Device
Manufacturing Method
Composite Solid Electrolyte
37 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Yasushi Yamazaki in Liquid Ejecting Technologies

Introduction: Yasushi Yamazaki, a prominent inventor based in Azumino, Japan, has made significant strides in the field of liquid ejecting technologies. With an impressive portfolio of 36 patents, his work primarily focuses on the development of advanced liquid ejecting heads and actuators, which have critical applications in various industries.

Latest Patents: Yamazaki's latest patents include innovative designs for liquid ejecting heads and liquid ejecting apparatus. One notable patent describes a liquid ejecting head that incorporates a piezoelectric element and a vibrating plate. This design features a first layer containing SiO (silicon dioxide) and a second layer composed of ZrO (zirconium oxide) that interacts dynamically with the first layer. The second layer also contains a unique first impurity element, with a higher concentration at the interface in contact with the first layer than in the internal region, showcasing a sophisticated approach to material interactions. Another significant patent elaborates on a piezoelectric device where a laminated structure consisting of a substrate, diaphragm, and piezoelectric actuator enhances performance, utilizing different metal elements and silicon nitride for improved efficiency.

Career Highlights: Throughout his career, Yasushi Yamazaki has worked with esteemed companies such as Seiko Epson Corporation and Sony Corporation. His experiences in these technologically advanced environments have undoubtedly contributed to his innovative mindset and successful patent developments.

Collaborations: Yamazaki has collaborated with notable professionals in the field, including Takashi Kunimori and Masanori Yasumori. These partnerships have facilitated the exchange of ideas and expertise, further driving advancements in liquid ejecting technologies.

Conclusion: Yasushi Yamazaki's contributions to liquid ejecting technologies are a testament to his creativity and expertise as an inventor. With his extensive patent portfolio and collaborations with influential colleagues, he continues to play a vital role in shaping the future of innovation in this specialized field. His work not only addresses current technological needs but also paves the way for future developments in fluid dynamics and electronic applications.

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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