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For the Inventor, By the Inventor

Sennan, Japan

Kenji Minami

This inventor holds 21 USPTO granted patents, primarily in Azo Compounds. Top assignees: Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo, Kanzaki Paper Manufacturing Co., Ltd., Sugai Chemical Industry Co., Ltd.. Active years: 1988-2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kenji Minami. Retrieved from https://idiyas.com/inventor/kenji-minami

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

USPTO Granted Patents = 21

% Patents Active = 66.7

Average Co-Inventor Count = 4.4

ph-index = 3

Forward Citations = 39(Granted Patents)


Location History:

  • Osaka, JP (1998 - 2001)
  • Sennan, JP (1988 - 2008)

Company Filing History:

goldMedal19 out of 93 
 
Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo
 patents
silverMedal1 out of 195 
 
Kanzaki Paper Manufacturing Co., Ltd.
 patents
bronzeMedal1 out of 11 
 
Sugai Chemical Industry Co., Ltd.
 patents
4. 1 out of 22 
 
Ueno Fine Chemicals Industry, Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1988-2008

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Areas of Expertise:
Naphthol Derivative
Charge Control Agent
Azo Compounds
Production Process
Condensed Azo Compounds
Water-Soluble Azo Compounds
Heat-Sensitive Recording Material
Alkylenebisnaphtol
Binaphthol Derivative
Metal Salt
Dimer Production
Toning Agent
21 patents (USPTO):Explore Patents
1. 7449608 - Naphthol derivative and charge control agent comprising the same (2008-11-11),
2. 7169523 - Charge controllers (2007-01-30),
3. 7074536 - Alkylenebisnaphtol derivative and charge control agent which consists of the same (2006-07-11),
4. 6891072 - Process for production of dimers or aromatic monohydroxyl compounds (2005-05-10),
5. 6849742 - Binaphthol derivative and process for producing the same (2005-02-01),
6. 6639092 - Metal salt of binaphthol derivative and method for preparing the same (2003-10-28),
7. 6548703 - Toning agent (2003-04-15),
8. 6451988 - Naphthol derivatives (2002-09-17),
9. 6409812 - AZO compounds and process for producing the same (2002-06-25),
10. 6284924 - Compounds (2001-09-04),
11. 6252104 - Naphthol derivatives and process for producing the same (2001-06-26),
12. 6239263 - Water-soluble azo compounds and process for the preparation thereof (2001-05-29),
13. 6084101 - Naphtol derivative and process for producing the same (2000-07-04),
14. 6072042 - Bis(aminocarbonylnaphthol) derivative (2000-06-06),
15. 6020470 - Water-soluble azo compounds and process for producing the same (2000-02-01),

Title: Innovations of Kenji Minami – A Pioneer in Charge Control Agents

Introduction

Kenji Minami, based in Sennan, Japan, is an accomplished inventor with a remarkable portfolio of 21 patents. His work primarily focuses on creating innovative chemical compounds, particularly in the field of charge control agents, which are crucial for electrophotographic applications.

Latest Patents

Among his latest inventions are two significant patents: one for a naphthol derivative and another for a charge control agent utilizing this derivative. The novel naphthol derivative is particularly notable for its ability to function as a positively electrifiable charge control agent. This innovation supports advancements in the production of electrophotographic toners, enhancing their performance through improved chargeability and compatibility with binder resins.

His work reflects a deep understanding of chemical interactions, providing safe charge control solutions that improve the dispersibility and applicability of toners in various coloring processes.

Career Highlights

Throughout his career, Kenji Minami has worked with esteemed organizations, such as Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo. His career has been marked by a continuous drive to innovate in the realm of chemical engineering and materials science, contributing significantly to the industry’s growth and technological advancements.

Collaborations

Kenji has had the privilege of collaborating with notable individuals in his field, including Ryuzo Ueno and Masaya Kitayama. Their collective efforts have fueled the development of cutting-edge materials and processes that have broad applications in the marketplace.

Conclusion

In conclusion, Kenji Minami's contributions to the field of charge control agents through his extensive patent portfolio showcase his expertise and innovative spirit. His latest inventions, aimed at enhancing electrophotographic toners, reaffirm his status as a leading inventor dedicated to advancing chemical technology in the industry.

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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