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Tokyo Metropolitan University

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USPTO Granted Patents = 62

% Expired Patents = 48.4

EPO Patents = 13

Forward Citations = 148

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131 inventors (with patents filed for the assignee):

Kiyoshi Kanamura (14 out of 22 patents)

Hitoshi Kiya (11 out of 23 patents)

Masatake Haruta (9 out of 11 patents)

4. Takahiro Fukuhara (9 out of 114 patents)

5. Toru Murayama (8 out of 13 patents)

6. Eiji Kiyonaga (7 out of 9 patents)

7. Kenji Hikino (7 out of 7 patents)

8. Keiichiro Morita (7 out of 9 patents)

9. Makoto Mino (7 out of 7 patents)

10. Toshihisa Shimizu (6 out of 7 patents)

11. Shinichi Urabe (5 out of 6 patents)

12. Hirokazu Munakata (5 out of 5 patents)

13. Hiroyoshi Kawakami (3 out of 8 patents)

14. Yosuke Sato (3 out of 32 patents)

15. Yoshio Yamauchi (3 out of 7 patents)

Core Competencies:

Lithium-Sulfur Battery

Solid-State Battery

Battery Separator

Gas Separation Membrane

Catalyst Recycling

Photovoltaic Device

Atomic Oscillator

Image Processing

Nano-Electrospray Ionization

Denitration Catalyst

Power Supply Cells

Chemical Treatment

62 patents: Sort by Forward Citations

1. 11931726 - Gold-supporting catalyst (2024-03-19),

2. 11543366 - Information acquisition method, information acquisition apparatus, and recording medium (2023-01-03),

3. 11139534 - Lithium secondary battery separator and method of manufacturing same (2021-10-05),

4. 11107936 - Output voltage control circuit device for plurality of power supply cells connected in series (2021-08-31),

5. 11052355 - Gas separation membrane containing heteromorphous shaped silica nanoparticles (2021-07-06),

6. 10930911 - Separator for metal secondary batteries (2021-02-23),

7. 10906009 - Method for manufacturing gas separation membrane (2021-02-02),

8. 10865684 - Combustion system (2020-12-15),

9. 10862160 - All-solid-state lithium-sulfur battery and production method for same (2020-12-08),

10. 10767535 - Method for recycling denitration catalyst (2020-09-08),

11. 10746074 - Method for recycling denitration catalyst (2020-08-18),

12. 10746073 - Denitration catalyst and method for producing the same (2020-08-18),

13. 10720745 - Atomic oscillator (2020-07-21),

14. 10686186 - Solid-state battery positive electrode material, production method for solid-state battery positive electrode material, all-solid-state lithium-sulfur battery using solid-state battery positive electrode material, and production method for all-solid-state lithium-sulfur battery using solid-state battery positive electrode material (2020-06-16),

15. 10643032 - Output sentence generation apparatus, output sentence generation method, and output sentence generation program (2020-05-05),

Company Overview

Tokyo Metropolitan University is a leading institution in Japan, focusing on advanced research and development in battery technology. The university specializes in innovative areas such as lithium-sulfur and solid-state batteries, contributing to the evolution of energy storage solutions. Additionally, its research encompasses battery separators, gas separation membranes, and catalyst recycling, alongside developments in photovoltaic devices and image processing technologies. The university plays a pivotal role in fostering technological advancements that address contemporary energy challenges.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 3 2026

62 Patents

#709 in Tokyo

#1,498 in Japan

#11,767 in the World

Tokyo Metropolitan University

Forward Citations = 148

131 inventors:

Kiyoshi Kanamura (14 out of 22 patents)

Hitoshi Kiya (11 out of 23 patents)

Masatake Haruta (9 out of 11 patents)

4. Takahiro Fukuhara (9 out of 114 patents)

5. Toru Murayama (8 out of 13 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tokyo Metropolitan University. Retrieved from https://idiyas.com/company/tokyo-metropolitan-university

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

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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