Kudamatsu, Japan

Ryoji Fukuyama

This inventor holds 3 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1986-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryoji Fukuyama. Retrieved from https://idiyas.com/inventor/ryoji-fukuyama

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

Calculating rank

% Patents Active = 66.7

Average Co-Inventor Count = 4.9

ph-index = 3

Forward Citations = 101(Granted Patents)


Company Filing History:


Years Active: 1986-2003

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3 patents (USPTO):Explore Patents

Title: Ryoji Fukuyama: Innovator in Plasma Processing Technology

Introduction

Ryoji Fukuyama is a notable inventor based in Kudamatsu, Japan. He has made significant contributions to the field of plasma processing, holding a total of 3 patents. His work focuses on advancing technologies that enhance the efficiency and effectiveness of plasma processing apparatuses.

Latest Patents

Fukuyama's latest patents include a plasma processing apparatus and a plasma processing method. The plasma processing apparatus features a vacuum chamber equipped with a process gas supply means, an electrode for holding samples, a plasma generator, and a vacuum exhaust system. A bias voltage of Vdc = -300 to -50 V is applied, maintaining the surface temperature of the silicon-made plate between 100 to 200 °C, with fluctuations kept within ±25 °C. His plasma processor invention includes a processing chamber, pressure reduction means, processing gas introduction means, and electric and magnetic field generation means. This design allows for miniaturization of the processor while ensuring uniform processing of samples.

Career Highlights

Ryoji Fukuyama has built a successful career at Hitachi, Ltd., where he has been instrumental in developing innovative plasma processing technologies. His expertise in this area has led to advancements that benefit various applications in the industry.

Collaborations

Fukuyama has collaborated with notable colleagues, including Norio Nakazato and Makoto Nawata. Their combined efforts have contributed to the success of various projects within the realm of plasma processing.

Conclusion

Ryoji Fukuyama's contributions to plasma processing technology highlight his innovative spirit and dedication to advancing the field. His patents and work at Hitachi, Ltd. continue to influence the industry positively.

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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