Hitachi, Japan

Yoshiaki Ishigami

USPTO Granted Patents = 54 

Average Co-Inventor Count = 2.6

ph-index = 8

Forward Citations = 348(Granted Patents)

Forward Citations (Not Self Cited) = 341(Oct 12, 2025)


Inventors with similar research interests:


Location History:

  • Tokyo, JP (2004 - 2015)
  • Hitachi, JP (2006 - 2017)

Company Filing History:


Years Active: 2004-2017

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54 patents (USPTO):Explore Patents

Title: The Innovative Mind of Yoshiaki Ishigami

Introduction: Yoshiaki Ishigami, based in Hitachi, Japan, is a notable inventor with a remarkable portfolio of 54 patents. His inventions reflect his contribution to the fields of connectors and antenna devices, showcasing his ingenuity and technical prowess.

Latest Patents: Among Yoshiaki Ishigami's latest inventions are groundbreaking patents that include a new connector designed to prevent disengagement through an innovative locking mechanism. This connector features a housing with a recessed portion that engages with a locking piece, ensuring stability during use. Additionally, his antenna device patent introduces a sophisticated phase shifter and feeding portion structured as a triplate line, facilitating efficient distribution and radiation of high-frequency signals across multiple antenna elements.

Career Highlights: Yoshiaki has built an impressive career through his work at renowned companies such as Hitachi Cable, Inc. and Hitachi Metals, Ltd. His expertise has positioned him as a key contributor within the industry, allowing him to advance technology in practical applications.

Collaborations: Throughout his career, Ishigami has collaborated with prominent colleagues like Yoshinori Sunaga and Kinya Yamazaki, enhancing the scope of his projects and enriching the innovation culture within his teams.

Conclusion: Yoshiaki Ishigami stands as a significant figure in the realm of technology and innovation. His extensive patent portfolio not only reflects his creative genius but also demonstrates his commitment to advancing technology, particularly in the areas of connectivity and high-frequency communication. His work continues to influence future advancements in these fields, securing his legacy as a pioneering inventor.

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