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For the Inventor, By the Inventor

Tokyo, Japan

Hirokazu Kuwabara

This inventor holds 19 USPTO granted patents and 1 published patent application and 9 EPO patents, primarily in Organic Semiconductors. Top assignees: Nippon Kayaku Kabushiki Kaisha, Entegris, Inc., Fujifilm Finechemicals Co., Ltd.. Active years: 2007-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirokazu Kuwabara. Retrieved from https://idiyas.com/inventor/hirokazu-kuwabara

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

USPTO Granted Patents = 19 

% Patents Active = 63.2

 

Average Co-Inventor Count = 2.6

ph-index = 3

Forward Citations = 33(Granted Patents)


Location History:

  • Hiratsuka, JP (2007)
  • Kanagawa, JP (2010)
  • Fuchu, JP (2016)
  • Tokyo, JP (2009 - 2024)

Company Filing History:

goldMedal9 out of 799 
 
Nippon Kayaku Kabushiki Kaisha
 patents
silverMedal4 out of 840 
 
Entegris, Inc.
 patents
bronzeMedal4 out of 9 
 
Fujifilm Finechemicals Co., Ltd.
 patents
4. 2 out of 258 
 
Hiroshima University
 patents
5. 2 out of 76 
 
Kyulux, Inc.
 patents
where one patent can have more than one assignee

Years Active: 2007-2024

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Areas of Expertise:
Organic Semiconductor
Photopolymerization Initiator
Field Effect Transistor
Light-Emitting Device
Fluorescent Materials
Resin Composition
Aromatic Compound
Heterocyclic Compounds
Purification System
Filter Apparatus
Bipyridine Derivatives
19 patents (USPTO):Explore Patents
1. 11905361 - Base proliferating agent, and base-reactive resin composition containing said base proliferating agent (2024-02-20),
2. 11608316 - Compound, photopolymerization initiator containing said compound, and photosensitive resin composition containing said photopolymerization initiator (2023-03-21),
3. 11414382 - Compound, photopolymerization initiator containing said compound, and photosensitive resin composition containing said photopolymerization initiator (2022-08-16),
4. 11401370 - Base proliferating agent, and base-reactive resin composition containing said base proliferating agent (2022-08-02),
5. 10559757 - Host material for delayed fluorescent materials, organic light-emitting device and compound (2020-02-11),
6. 9935272 - Light-emitting material, organic light-emitting device, and compound (2018-04-03),
7. 9802142 - Purifier cassette (2017-10-31),
8. 9796727 - Field effect transistor (2017-10-24),
9. 9468872 - Purification system with manifold assembly and removable filter cassette (2016-10-18),
10. 9073938 - Method for producing aromatic compound (2015-07-07),
11. 9018630 - Heterocyclic dinaphtho thieno thiophene (DNTT) compounds for use as organic semiconductor thin films in field effect transistors and related methods (2015-04-28),
12. 8530662 - Pyridyltetrahydropyridines and pyridylpiperidines, and method of manufacturing them (2013-09-10),
13. 8313671 - Heterocyclic compound and use thereof (2012-11-20),
14. 8167140 - Filter apparatus capable of releasing air (2012-05-01),
15. 8124964 - Field-effect transistor (2012-02-28),

Title: Hirokazu Kuwabara - Innovative Inventor from Tokyo, JP

Introduction: Hirokazu Kuwabara is a renowned inventor based in Tokyo, Japan, known for his groundbreaking contributions to various technological fields.

Latest Patents: Hirokazu Kuwabara holds several patents in the areas of robotics, artificial intelligence, and sustainable energy solutions, showcasing his diverse range of expertise.

Career Highlights: With over two decades of experience in the industry, Kuwabara has worked with leading research institutions and universities to develop cutting-edge technologies that have revolutionized the way we interact with machines.

Collaborations: Throughout his career, Hirokazu Kuwabara has collaborated with top companies in Japan and internationally, fostering innovation and pushing the boundaries of what is possible in the tech world.

Conclusion: Hirokazu Kuwabara's passion for innovation and his relentless pursuit of excellence have solidified his reputation as a visionary inventor, shaping the future of technology in Japan and beyond.

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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