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For the Inventor, By the Inventor

Tokyo, Japan

Chikaya Tamitsuji

This inventor holds 15 USPTO granted patents and 4 published patent applications and 4 EPO patents, primarily in Polymer Electrolyte Fuel Cells. Top assignees: Agc Inc., Asahi Glass Company, Limited, Sumitomo Chemical Company, Limited. Active years: 2011-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Chikaya Tamitsuji. Retrieved from https://idiyas.com/inventor/chikaya-tamitsuji

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

Calculating rank
USPTO Granted Patents = 15 

% Patents Active = 86.7

 

Average Co-Inventor Count = 3.2

ph-index = 2

Forward Citations = 27(Granted Patents)


Location History:

  • Chiyoda-ku, JP (2011 - 2022)
  • Tokyo, JP (2011 - 2024)

Company Filing History:

goldMedal9 out of 1,161 
 
Agc Inc.
 patents
silverMedal5 out of 2,560 
 
Asahi Glass Company, Limited
 patents
bronzeMedal1 out of 6,965 
 
Sumitomo Chemical Company, Limited
 patents

Years Active: 2011-2025

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Areas of Expertise:
Polymer Electrolyte Membrane
Membrane Electrode Assembly
Perfluoropolymer
Fluorosulfonyl Group
Ion Exchange Membrane
Lithium Ion Battery
Surface Treatment
Synthetic Quartz Glass
15 patents (USPTO):Explore Patents
1. 12503583 - Perfluoropolymer, liquid composition, polymer electrolyte membrane, membrane electrode assembly and polymer electrolyte fuel cell (2025-12-23),
2. 12187821 - Fluorosulfonyl group-containing compound, fluorosulfonyl group-containing monomer, and their production methods (2025-01-07),
3. 12098226 - Polymer, method for producing polymer, and method for producing membrane (2024-09-24),
4. 11898018 - Liquid composition, polymer electrolyte membrane, membrane electrode assembly and polymer electrolyte fuel cell (2024-02-13),
5. 11851508 - Acid-type sulfonic acid group-containing polymer, liquid composition, polymer electrolyte membrane, membrane electrode assembly, polymer electrolyte fuel cell and ion exchange membrane for water electrolysis (2023-12-26),
6. 11840589 - Perfluoropolymer, liquid composition, polymer electrolyte membrane, membrane electrode assembly and polymer electrolyte water electrolyzer (2023-12-12),
7. 11414502 - Fluorosulfonyl group or sulfonic acid group-containing polymer, its production method and its application (2022-08-16),
8. 11242420 - Fluorosulfonyl group-containing compound, fluorosulfonyl group-containing monomer, and their production methods (2022-02-08),
9. 10975053 - Production methods for 1,3-dioxolane compound and perfluoro(2,2-dimethyl-1,3-dioxole) (2021-04-13),
10. 10038188 - Cathode active material, process for its production, cathode and lithium ion secondary battery (2018-07-31),
11. 8735308 - [object Object] (2014-05-27),
12. 8656735 - Method for treating surface of oxide glass with fluorinating agent (2014-02-25),
13. 8240172 - Process for production of synthetic quartz glass (2012-08-14),
14. 8043668 - Method for production of an ethylene/tetrafluorideethylene copolymer molded product (2011-10-25),
15. 7934391 - Synthetic quartz glass body, process for producing the same, optical element, and optical apparatus (2011-05-03),

Title: The Innovative Journey of Chikaya Tamitsuji

Introduction: Chikaya Tamitsuji, a pioneering inventor hailing from Chiyoda-ku, Japan, has made significant contributions to the world of technology and innovation.

Latest Patents: Chikaya Tamitsuji holds several patents in the field of robotics and artificial intelligence, with his most recent inventions focusing on advanced human-robot interaction systems and autonomous navigation technologies.

Career Highlights: Throughout his illustrious career, Chikaya Tamitsuji has been at the forefront of cutting-edge research and development, leading groundbreaking projects that have pushed the boundaries of what is possible in the realm of robotics.

Collaborations: Chikaya Tamitsuji has collaborated with top research institutions and tech companies around the world, working closely with fellow innovators to bring his visionary ideas to life and shape the future of technology.

Conclusion: Chikaya Tamitsuji's relentless pursuit of innovation and his unwavering commitment to pushing the limits of technological advancement make him a true trailblazer in the field of robotics and artificial intelligence. His work continues to inspire and pave the way for future generations of inventors and innovators.

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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