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For the Inventor, By the Inventor

Kanagawa, Japan

Keiji Okada

This inventor holds 14 USPTO granted patents. Top assignees: Nissan Motor Company Limited, Sumitomo Eaton Nova Corporation, Sen Corporation, an Shi and Axcelis Company. Active years: 1991-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keiji Okada. Retrieved from https://idiyas.com/inventor/keiji-okada-h2s0h7c7

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

Calculating rank
USPTO Granted Patents = 14

% Patents Active = 64.3

Average Co-Inventor Count = 3.4

ph-index = 7

Forward Citations = 121(Granted Patents)


Location History:

  • Shusou-gun, JP (1999)
  • Saijo, JP (2009)
  • Ehime, JP (1991 - 2012)
  • Yokohama, JP (2005 - 2015)
  • Kanagawa, JP (2001 - 2022)

Company Filing History:

goldMedal7 out of 13,420 
 
Nissan Motor Company Limited
 patents
silverMedal3 out of 21 
 
Sumitomo Eaton Nova Corporation
 patents
bronzeMedal2 out of 12 
 
Sen Corporation, an Shi and Axcelis Company
 patents
4. 1 out of 1,109 
 
Chisso Corporation
 patents
5. 1 out of 81 
 
Sumitomo Heavy Industries Ion Technology Co., Ltd.
 patents

Years Active: 1991-2022

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14 patents (USPTO):Explore Patents
1. 11322770 - Solid oxide fuel cell (2022-05-03),
2. 10566641 - Fuel cell system and control method for controlling moisture content of fuel (2020-02-18),
3. 9666413 - Ion implantation apparatus and control method for ion implantation apparatus (2017-05-30),
4. 8974983 - Electrical conductive member and polymer electrolyte fuel cell using the same (2015-03-10),
5. 8096744 - Wafer processing system, wafer processing method, and ion implantation system (2012-01-17),
6. 7597531 - Method of controlling mover device (2009-10-06),
7. 7187143 - Mover device and semiconductor manufacturing apparatus and method (2007-03-06),
8. 6902832 - Charge-transporting material containing diazapentacene derivative, luminescent material, and organic electroluminescent element employing these (2005-06-07),
9. 6516612 - Exhaust gas purification device for an engine and A/F ratio control for early activating a NOx trapping catalyst (2003-02-11),
10. 6497846 - Exhaust gas purifying system for internal combustion engine (2002-12-24),
11. 6289673 - Air-fuel ratio control for exhaust gas purification of engine (2001-09-18),
12. 6220017 - Exhaust emission control system for internal combustion engine (2001-04-24),
13. 5931627 - Wafer transport apparatus that can transfer multiple wafers in a short (1999-08-03),
14. 5046992 - Robot arm capable of three-dimensionally moving a robot arm member (1991-09-10),

Title: Keiji Okada - Innovative Inventor from Kanagawa, Japan

Introduction: Keiji Okada is a renowned inventor hailing from Kanagawa, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Keiji Okada holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his diverse range of expertise and innovative spirit.

Career Highlights: With a career spanning over two decades, Keiji Okada has worked with leading tech companies in Japan, spearheading research and development projects that have led to significant advancements in various industries.

Collaborations: Throughout his career, Keiji Okada has collaborated with top researchers, engineers, and scientists both locally and internationally, fostering a culture of innovation and knowledge sharing.

Conclusion: Keiji Okada's passion for innovation and his relentless pursuit of excellence have solidified his reputation as a visionary inventor, shaping the landscape of technology for years to come.

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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