Osaka, Japan

Yutaka Nakagishi

This inventor holds 5 USPTO granted patents. Top assignees: Fuji Electric Co., Ltd., Mitsubishi Jukogyo Kabushiki Kaisha, Okuno Chemical Industries Co., Ltd.. Active years: 1995-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yutaka Nakagishi. Retrieved from https://idiyas.com/inventor/yutaka-nakagishi

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

Calculating rank

% Patents Active = 80.0

Average Co-Inventor Count = 5.0

ph-index = 2

Forward Citations = 11(Granted Patents)


Location History:

  • Ueno, JP (1995)
  • Osaka, JP (2000 - 2004)

Company Filing History:


Years Active: 1995-2004

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5 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Yutaka Nakagishi

Introduction

Yutaka Nakagishi, an accomplished inventor based in Osaka, Japan, has significantly impacted the field of electrophotography with his innovative ideas and patent contributions. With a total of five patents to his name, Nakagishi's inventions focus on enhancing the performance of photosensitive bodies in electrophotographic devices.

Latest Patents

Among his latest patents are the "Substrate for Electrophotography Photosensitive Body," "Electrophotography Photosensitive Body," and "Electrophotography Device - Substrate for Electrophotographic Photoconductor." A notable aspect of his inventions is the substrate designed for an electrophotographic photoconductor that features an anodic oxidation film on its surface. This substrate undergoes a two-step sealing treatment, utilizing nickel fluoride and nickel acetate as sealing agents. The improvements lead to a reduced charge potential difference during operation, resulting in minimal image defects, such as fogging, even in the absence of preliminary charging prior to printing.

Career Highlights

Throughout his career, Yutaka Nakagishi has worked with several prestigious companies, including Mitsubishi Jukogyo Kabushiki Kaisha and Okuno Chemical Industries Co., Ltd. These experiences have enabled him to sharpen his inventive skills and pursue pioneering solutions in the electrophotography sector.

Collaborations

Yutaka Nakagishi has collaborated with talented colleagues such as Masaaki Sakaguchi and Hidetaka Yahagi. Their partnership has fostered a creative environment that has led to the development of innovative technologies in the electrophotographic realm.

Conclusion

Yutaka Nakagishi's contributions to electrophotography demonstrate the power of innovation in enhancing technological performance. His impressive portfolio of patents highlights his commitment to furthering advancements in this field, and his collaborations with esteemed professionals continue to pave the way for future inventions.

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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