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For the Inventor, By the Inventor

Itami, Japan

Keiichi Inagaki

This inventor holds 10 USPTO granted patents. Top assignees: Minolta Company, Ltd., Minolta Camera Kabushiki Kaisha. Active years: 1992-2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keiichi Inagaki. Retrieved from https://idiyas.com/inventor/keiichi-inagaki-8k8vfdjb

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

Calculating rank
USPTO Granted Patents = 10

% Patents Active = 70.0

Average Co-Inventor Count = 2.6

ph-index = 5

Forward Citations = 59(Granted Patents)


Company Filing History:

goldMedal7 out of 2,816 
 
Minolta Company, Ltd.
 patents
silverMedal3 out of 2,979 
 
Minolta Camera Kabushiki Kaisha
 patents

Years Active: 1992-2008

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10 patents (USPTO):Explore Patents
1. 7344810 - Photosensitive member (2008-03-18),
2. 7041419 - Organic photoreceptor unit (2006-05-09),
3. 6511542 - Apparatus and method for producing electrophotographic photoreceptor (2003-01-28),
4. 6368764 - Photosensitive member for electrophotography (2002-04-09),
5. 6365309 - Photosensitive member for electrophotography with specic surface protective layer (2002-04-02),
6. 6280896 - Photosensitive member for electrophotography (2001-08-28),
7. 6120955 - Substrate for photosensitive member, photosensitive member, production (2000-09-19),
8. 5395715 - Photosensitive member having photosensitive layer which comprises amino (1995-03-07),
9. 5380613 - Photosensitive member comprising electronattracting compound and (1995-01-10),
10. 5166019 - Photosensitive member comprising specified distyryl compound as charge (1992-11-24),

Title: Keiichi Inagaki: Innovator in Electrophotographic Technology

Introduction

Keiichi Inagaki is a notable inventor based in Itami, Japan. He has made significant contributions to the field of electrophotography, holding a total of 10 patents. His work primarily focuses on the development of photosensitive members and organic photoreceptor units.

Latest Patents

One of his latest patents is related to a photosensitive member. This invention pertains to an electrophotographic photosensitive member that features a photosensitive layer superimposed over a substrate. In one aspect of the invention, sequential laminations of a dispersion layer of conductive tantalum-doped tin oxide powder dispersed in a binder resin solution are provided between the substrate layer and the photosensitive layer. Another aspect of this invention involves a protective layer for the photosensitive layer, which may be a dispersion layer formed by dispersing tantalum-doped tin oxide powder in a resin solution.

In addition, he has developed an organic photoreceptor unit. This invention includes a conductive base unit, a charge generating layer formed on the conductive base unit, a first charge transport layer containing a first bonding resin and a first charge transport material, and a second charge transport layer that contains a second bonding resin, which includes denatured polycarbonate resin, fluorine resin particles, and a second charge transport material. Notably, the content of the second charge transport material relative to the second bonding resin is larger than that of the first charge transport material relative to the first bonding resin.

Career Highlights

Throughout his career, Keiichi Inagaki has worked with prominent companies in the industry. He has been associated with Minolta Company, Ltd. and Minolta Camera Co., Ltd. His experience in these organizations has contributed to his expertise in the field of electrophotography.

Collaborations

Inagaki has collaborated with notable coworkers, including Shigeaki Tokutake and Hideaki Ueda. Their collective efforts have further advanced the innovations in electrophotographic technology.

Conclusion

Keiichi Inagaki's contributions to the field of electrophotography through his patents and collaborations highlight his role as a significant innovator. His work continues to influence advancements in this technology.

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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