Toride, Japan

Shubun Kujirai

This inventor holds 10 USPTO granted patents and 5 published patent applications and 1 EPO patent. Top assignee: Canon Kabushiki Kaisha. Active years: 2019-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shubun Kujirai. Retrieved from https://idiyas.com/inventor/shubun-kujirai

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

USPTO Granted Patents = 10 

% Patents Active = 60.0

 

Average Co-Inventor Count = 3.9

ph-index = 5

Forward Citations = 53(Granted Patents)


Location History:

  • Toride, JP (2019 - 2021)
  • Ibaraki, JP (2022)

Company Filing History:


Years Active: 2019-2022

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10 patents (USPTO):Explore Patents

Title: Shubun Kujirai: Innovator in Electrophotographic Technology

Introduction

Shubun Kujirai is a prominent inventor based in Toride, Japan. He has made significant contributions to the field of electrophotography, holding a total of 10 patents. His work focuses on enhancing the performance and reliability of electrophotographic devices.

Latest Patents

Kujirai's latest patents include innovations such as an electrophotographic photosensitive member, a process cartridge, and an electrophotographic image forming apparatus. These inventions are designed to suppress environmental fluctuations during repeated use. The protective layer of the electrophotographic photosensitive member contains a polymer composition that includes a hole transporting compound with multiple (meth)acryloyloxy groups, along with a compound featuring a specific structure. Additionally, his patents detail an electrophotographic photosensitive member that consists of a support and a surface layer, where the surface layer is made from a copolymer containing a specific hole transporting compound.

Career Highlights

Shubun Kujirai is associated with Canon Kabushiki Kaisha, a leading company in imaging and printing technology. His work at Canon has allowed him to push the boundaries of electrophotographic technology, contributing to advancements that benefit various applications in the industry.

Collaborations

Kujirai has collaborated with notable colleagues, including Koichi Nakata and Haruki Mori. These partnerships have fostered a creative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Shubun Kujirai's contributions to electrophotographic technology exemplify his dedication to innovation and excellence. His patents reflect a commitment to improving the functionality and efficiency of imaging devices.

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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