Nagaokakyo, Japan

Shigeki Koya

USPTO Granted Patents = 64 

Average Co-Inventor Count = 3.6

ph-index = 6

Forward Citations = 104(Granted Patents)

Forward Citations (Not Self Cited) = 84(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Kokubunji, JP (2008 - 2013)
  • Koganei, JP (2012 - 2014)
  • Kyoto, JP (2016 - 2023)
  • Nagaokakyo, JP (2015 - 2024)

Company Filing History:


Years Active: 2008-2025

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Areas of Expertise:
Power Amplification Circuit
Power Amplifier
Semiconductor Device
Radio-Frequency Power Amplifying Element
Bipolar Transistor
Compound Semiconductor Device
Multilayer Wiring Substrate
Amplifier Module
Heterojunction Bipolar Transistor
Semiconductor Package
Power Amplification Device
Semiconductor Element
64 patents (USPTO):Explore Patents

Title: Innovations in Semiconductor Technology: The Contributions of Shigeki Koya

Introduction: Shigeki Koya, an esteemed inventor based in Nagaokakyo, Japan, has made significant strides in the field of semiconductor technology. With an impressive portfolio of 61 patents, Koya has contributed to the advancement of semiconductor devices, pushing the boundaries of innovation in the industry.

Latest Patents: Among his latest patents, Koya has developed a semiconductor device featuring a unique arrangement of cells on a substrate surface. Each cell includes unit transistors that are connected in parallel, optimizing performance and efficiency. The design allows collector electrodes to be strategically placed between adjacent cells. In one notable configuration, the base and emitter electrodes of the transistors are aligned along the same direction, maintaining consistency in the arrangement across the unit transistors. This innovative layout ensures that the distances between the emitter electrodes of adjacent transistors are minimized, thereby enhancing the device's functionality and performance.

Additionally, Koya's work includes a semiconductor design with transistors arranged side by side on the substrate surface, which are also interconnected in parallel. The inclusion of passive elements between these transistors exemplifies his commitment to advancing semiconductor technology, solidifying his reputation as a leading innovator in this field.

Career Highlights: Shigeki Koya has held significant roles in renowned technology companies, notably Murata Manufacturing Co., Ltd. and Renesas Electronics Corporation. His contributions in these leading firms have been pivotal in the evolution of semiconductor devices, reflecting his expertise and innovative spirit in the tech landscape.

Collaborations: Throughout his career, Koya has collaborated with notable professionals such as Yasunari Umemoto and Isao Obu. Their collective expertise has fostered a collaborative environment that has enriched the development of groundbreaking technologies in the semiconductor arena.

Conclusion: Shigeki Koya's contributions to semiconductor technology through his numerous patents highlight his position as a key inventor in the field. His innovative designs and collaborative efforts have paved the way for advancements that will influence the future of electronics. As technology continues to evolve, Koya's work remains a vital part of the conversation surrounding semiconductor innovations.

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