Chigasaki, Japan

Kunihiro Katayama

This inventor holds 107 USPTO granted patents, primarily in Semiconductor Memory (CPC class G11C1-606). Top assignees: Hitachi, Ltd., Renesas Technology Corp., Solid State Storage Solutions LLC. Active years: 1993-2016.


% Patents Active = 52.3

Average Co-Inventor Count = 4.6

ph-index = 23

Forward Citations = 2,260(Granted Patents)

Forward Citations (Not Self Cited) = 1,993(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • Kawasaki, JP (2007 - 2010)
  • Yokohama, JP (1993 - 2011)
  • Kanagawa, JP (2013 - 2014)
  • Chigasaki, JP (1998 - 2016)

Company Filing History:


Years Active: 1993-2016

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Areas of Expertise:
Flash Memory
Memory Card
Faulty Cells
Nonvolatile Memory
Memory Access Control
Storage Device
Semiconductor Device
Data Rewriting
IC Module
Mobile Communication
Programmable Cells
Information Management
107 patents (USPTO):Explore Patents

Title: The Visionary Inventor: Kunihiro Katayama

Introduction: Kunihiro Katayama, a visionary inventor hailing from Chigasaki, JP, is a luminary in the realm of technology. With an impressive portfolio of 107 patents, Katayama's innovative spirit and commitment to paving the way for a sustainable future have captivated the global innovation landscape.

Latest Patents: Among his latest patents is the groundbreaking "External storage device and memory access control method thereof," revolutionizing storage solutions by efficiently transmitting data between non-volatile semiconductor memory and host systems. Additionally, Katayama's "Semiconductor memory device having faulty cells" showcases his mastery in ensuring memory apparatus operability in the presence of faulty memory cells.

Career Highlights: Kunihiro Katayama's illustrious career includes tenures at renowned companies such as Hitachi, Ltd., and Renesas Technology Corp. His expertise and ingenuity have significantly influenced the advancement of technology in these organizations, leaving a profound impact on the industry as a whole.

Collaborations: Throughout his career, Katayama has collaborated with esteemed colleagues such as Takayuki Tamura and Kenichi Kaki, further amplifying the impact of his innovative pursuits. These collaborations have fostered a culture of creativity and excellence, driving groundbreaking technological advancements forward.

Conclusion: Kunihiro Katayama's legacy as a visionary inventor is etched in the annals of technological history. His relentless drive for excellence, coupled with a passion for innovation, continues to inspire generations of inventors and innovators worldwide. Katayama's contributions have reshaped the landscape of technology, setting new standards for creativity and sustainability in the digital era.

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