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For the Inventor, By the Inventor

Fujisawa, Japan

Daiji Nagaoka

This inventor holds 78 USPTO granted patents and 5 published patent applications and 48 EPO patents, primarily in Exhaust Gas Purification (CPC class F01N). Top assignees: Isuzu Motors Limited, Fuji Xerox Co., Ltd., Isuzu Motors Limi Ted. Active years: 1989-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Daiji Nagaoka. Retrieved from https://idiyas.com/inventor/daiji-nagaoka

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

USPTO Granted Patents = 78 

% Patents Active = 80.8

 

Average Co-Inventor Count = 2.4

ph-index = 9

Forward Citations = 273(Granted Patents)

Forward Citations (Not Self Cited) = 261(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Kanagawa, JP (1989 - 1994)
  • Fujisawa, JP (2006 - 2019)
  • Kamakura, JP (2015 - 2021)

Company Filing History:

goldMedal70 out of 1,291 
 
Isuzu Motors Limited
 patents
silverMedal7 out of 11,665 
 
Fuji Xerox Co., Ltd.
 patents
bronzeMedal1 out of 7 
 
Isuzu Motors Limi Ted
 patents

Years Active: 1989-2021

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Areas of Expertise:
Exhaust Purification
Control Method
NOx Reduction
Internal Combustion Engine
Catalyst Regeneration
Gas Cleaning System
Particulate Removal
Estimation Device
Gas Aftertreatment
Exhaust Gas Control
Purification Capacity
Regeneration Device
78 patents (USPTO):Explore Patents
1. 10947884 - Exhaust purification device and control method for same (2021-03-16),
2. 10837336 - Exhaust gas purifying system (2020-11-17),
3. 10753245 - Exhaust gas purification system for internal combustion engine, internal combustion engine, and exhaust gas purification method for internal combustion engine (2020-08-25),
4. 10690073 - Exhaust purification system and catalyst regeneration method (2020-06-23),
5. 10683788 - NOx occlusion amount estimating device and NOx occlusion amount estimating method (2020-06-16),
6. 10677136 - Internal combustion engine control device (2020-06-09),
7. 10677128 - Exhaust purification system and catalyst regeneration method (2020-06-09),
8. 10675587 - Exhaust purification system (2020-06-09),
9. 10669909 - Exhaust purification system (2020-06-02),
10. 10570798 - Exhaust purification system and catalyst regeneration method (2020-02-25),
11. 10480437 - Exhaust purification system (2019-11-19),
12. 10480436 - Exhaust purification system and catalyst regeneration method (2019-11-19),
13. 10465581 - Internal combustion engine and method for removing particulate substance from internal combustion engine (2019-11-05),
14. 10436092 - Exhaust purification system and control method therefor (2019-10-08),
15. 10415448 - Exhaust gas cleaning system for internal combustion engine and exhaust gas cleaning method for internal combustion engine (2019-09-17),

Title: The Innovative Mind of Daiji Nagaoka

Introduction: Daiji Nagaoka, a pioneering inventor hailing from Fujisawa, Japan, is renowned for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Daiji Nagaoka's recent patents showcase his continued dedication to pushing the boundaries of technological advancement, with a focus on cutting-edge solutions in the realm of robotics and artificial intelligence.

Career Highlights: Throughout his illustrious career, Daiji Nagaoka has consistently demonstrated a keen ability to transform visionary ideas into tangible inventions that have revolutionized industries. His innovative spirit and relentless pursuit of excellence have earned him a reputation as a trailblazer in the world of technology.

Collaborations: Daiji Nagaoka has collaborated with leading research institutions, universities, and tech companies to further his research and bring his inventions to life. His ability to work seamlessly with diverse teams underscores his commitment to driving innovation through collaboration.

Conclusion: Daiji Nagaoka's remarkable journey as an inventor exemplifies the power of creativity, perseverance, and collaboration in shaping the future of technology. His pioneering spirit continues to inspire generations of innovators to push the boundaries of what is possible.

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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