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For the Inventor, By the Inventor

Yokohama, Japan

Takaharu Nakano

This inventor holds 17 USPTO granted patents. Top assignees: Chisso Corporation, Karonite Chemical Co., Ltd.. Active years: 1985-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takaharu Nakano. Retrieved from https://idiyas.com/inventor/takaharu-nakano

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

USPTO Granted Patents = 17

% Patents Active = 70.6

Average Co-Inventor Count = 4.1

ph-index = 7

Forward Citations = 143(Granted Patents)


Location History:

  • Yokosukashi, JP (1987)
  • Yokohamashi, JP (1989)
  • Kanagawa, JP (1992)
  • Kumamoto, JP (1997)
  • Yokosuka, JP (2004)
  • Yokohama, JP (1985 - 2005)

Company Filing History:

goldMedal16 out of 1,109 
 
Chisso Corporation
 patents
silverMedal1 out of 3 
 
Karonite Chemical Co., Ltd.
 patents

Years Active: 1985-2005

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17 patents (USPTO):Explore Patents
1. 6936189 - Cyclic tertiary amine compound and organic electroluminescent device containing the compound (2005-08-30),
2. 6902832 - Charge-transporting material containing diazapentacene derivative, luminescent material, and organic electroluminescent element employing these (2005-06-07),
3. 6767654 - Organic electroluminescent device (2004-07-27),
4. 6761981 - Cyclic tertiary amine compound and organic electroluminescent device containing the compound (2004-07-13),
5. 6696182 - Organic electroluminescent device comprising dipyridylthiophene derivative (2004-02-24),
6. 6617053 - Organic electroluminescent device containing dithiafulvene derivative (2003-09-09),
7. 5672671 - Process for producing diorganopolysiloxane (1997-09-30),
8. 5140087 - Organosiloxane and process for preparing the same (1992-08-18),
9. 5098981 - Polyorganosiloxane (1992-03-24),
10. 5047491 - Polyorganosiloxane compounds (1991-09-10),
11. 4996280 - Polyorganosiloxane compounds with amino group (1991-02-26),
12. 4992521 - Organosiloxane and process for preparing the same (1991-02-12),
13. 4987203 - Polyorganosiloxane compounds with epoxy group (1991-01-22),
14. 4839443 - Polysiloxane containing hydroxyl groups and a silicone-modified (1989-06-13),
15. 4822850 - Modified polyorganosiloxane containing isocyanate group and process for (1989-04-18),

Title: The Innovations of Takaharu Nakano

Introduction

Takaharu Nakano is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of organic electroluminescent devices, holding a total of 17 patents. His work focuses on developing materials that enhance the efficiency and longevity of these devices.

Latest Patents

Among his latest patents is a cyclic tertiary amine compound and an organic electroluminescent device containing this compound. This invention discloses a cyclic tertiary amine compound represented by a specific formula, which serves as a hole transport material, hole injection material, or organic electroluminescent material. The use of this compound can lead to organic EL devices that exhibit high luminous efficiency and an extended service life. Another notable patent involves a charge-transporting material containing a diazapentacene derivative, along with a luminescent material and an organic electroluminescent device that utilizes these components. This invention aims to achieve high efficiency in organic electroluminescent devices.

Career Highlights

Takaharu Nakano has worked with several notable companies throughout his career, including Chisso Corporation and Karonite Chemical Co., Ltd. His experience in these organizations has contributed to his expertise in the field of organic materials and electroluminescent technology.

Collaborations

He has collaborated with several professionals in his field, including Nobumasa Ohtake and Takahiro Saho. These collaborations have likely enriched his research and development efforts, leading to innovative solutions in organic electroluminescent devices.

Conclusion

Takaharu Nakano's contributions to the field of organic electroluminescent devices are noteworthy. His innovative patents and collaborations reflect his commitment to advancing technology in this area. His work continues to influence the development of efficient and long-lasting organic EL 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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