Itami, Japan

Kazuhiko Nakahara

This inventor holds 20 USPTO granted patents and 1 published patent application and 2 EPO patents, primarily in High-Frequency Electronics. Top assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Electric Corporation, Biglobe Inc.. Active years: 1990-2023.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuhiko Nakahara. Retrieved from https://idiyas.com/inventor/kazuhiko-nakahara

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

Calculating rank
USPTO Granted Patents = 20 

% Patents Active = 95.0

 

Average Co-Inventor Count = 1.9

ph-index = 9

Forward Citations = 367(Granted Patents)


Location History:

  • Itami, JP (1990 - 1996)
  • Hyogo, JP (1996)
  • Tokyo, JP (2001 - 2023)

Company Filing History:


Years Active: 1990-2023

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Areas of Expertise:
Naphthol Resin
Epoxy Resin
High-Frequency Amplifier
Microwave Amplifier
Phase Shifter
High-Frequency Switch
Semiconductor Device
Bidirectional Amplifier
Optoelectronic Integrated Circuit
Inductive Structures
MMIC Production
Variable Attenuation
20 patents (USPTO):Explore Patents

Title: Innovations by Kazuhiko Nakahara: A Pioneer in High-Frequency Technologies

Introduction

Kazuhiko Nakahara, an esteemed inventor from Itami, Japan, has made significant contributions to the field of high-frequency technology, holding 19 patents to his name. His innovative work has greatly impacted the communication industry, particularly in the areas of amplifiers and switches.

Latest Patents

Nakahara's latest inventions showcase his dedication to advancing technology. One of his notable patents is the High-Frequency Amplifier, which incorporates a MIM capacitor within its matching circuits. This unique design performs impedance matching for fundamental waves in high-frequency signals with a transmission line, while also creating a short-circuit point for harmonics.

Another significant patent developed by Nakahara is the High-Frequency Switch. This invention includes a complex arrangement of transistors and a control unit, which allows for high efficiency in managing transmitted and received signals. The design enables different operational states for signal control, ensuring optimal performance during both transmission and reception with automatic gain control.

Career Highlights

Nakahara's journey in the technology sector includes significant roles at reputable companies such as Mitsubishi Denki Kabushiki Kaisha and Mitsubishi Electric Corporation. His work in these organizations has provided a strong foundation for his innovative developments and has further established him as a leader in high-frequency technology.

Collaborations

Throughout his career, Nakahara has collaborated with talented individuals, including esteemed colleagues like Naoto Andoh and Kazutomi Mori. These partnerships have allowed for the exchange of ideas and have contributed to the successful development of cutting-edge technologies.

Conclusion

Kazuhiko Nakahara stands out as a visionary inventor whose patents continue to shape the future of high-frequency technology. With a solid repertoire of innovations and collaborations with other industry professionals, Nakahara's contributions are bound to influence future advancements in this dynamic field. His work is a testament to the critical role inventors play in driving technological progress.

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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