Yokohama, Japan

Katsuhiko Koui

USPTO Granted Patents = 103 

Average Co-Inventor Count = 4.2

ph-index = 20

Forward Citations = 1,357(Granted Patents)

DiyaCoin DiyaCoin 0.75 


Inventors with similar research interests:


Location History:

  • Kawasaki, JP (2001 - 2010)
  • Kamagawa, JP (2011)
  • Ome, JP (2009 - 2012)
  • Kanagawa-ken, JP (2002 - 2013)
  • Tokyo, JP (2009 - 2013)
  • Yokohama, JP (2008 - 2019)
  • Kanagawa, JP (2015 - 2021)
  • Yokohama Kanagawa, JP (2015 - 2021)

Company Filing History:


Years Active: 2001-2021

where 'Filed Patents' based on already Granted Patents

103 patents (USPTO):

Title: Innovations of Katsuhiko Koui: A Pioneer in Magnetic Device Technology

Introduction: Katsuhiko Koui is a distinguished inventor based in Yokohama, Japan, known for his significant contributions to the field of magnetic devices. With an impressive portfolio of 103 patents, Koui's work has greatly advanced our understanding and capabilities in magnetic memory technology.

Latest Patents: Koui's latest innovations include a magnetic device that efficiently stores first and second values. This invention features a first conductive layer and a first magnetoresistive effect element, which utilizes a control terminal and a specialized circuit for current supply and voltage application. This technology enhances data storage by enabling logical operations between stored data values and control voltages. Additionally, he developed a magnetic memory device comprised of layered magnetic elements, controlled by a current flow through a conductive member. This design allows for the identification of three or more levels of electrical resistance value within the stacked layers, marking a significant advancement in magnetic memory device technology.

Career Highlights: Throughout his career, Katsuhiko Koui has worked with notable companies in the tech sector, including Kabushiki Kaisha Toshiba and TDK Corporation. His expertise in magnetic devices and memory technology has positioned him as a leading figure in the industry, particularly known for innovative solutions that merge functionality with efficiency.

Collaborations: Koui has collaborated with esteemed colleagues, including Hitoshi Iwasaki and Kenichiro Yamada. Their combined efforts in research and development have yielded advancements that continue to influence the landscape of magnetic storage technologies.

Conclusion: Katsuhiko Koui's contributions to the field of magnetic devices, showcased through his extensive patent portfolio, demonstrate his innovative spirit and commitment to advancing technology. His work not only enhances our current understanding but also paves the way for the future of magnetic memory systems.

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