For the Inventor, By the Inventor

Enter assignee name

Oita University

Calculating rank

USPTO Granted Patents = 18

% Expired Patents = 38.9

EPO Patents = 2

Forward Citations = 15

Loading Chart...

Loading Chart...

60 inventors (with patents filed for the assignee):

Kimihiro Nishijima (4 out of 6 patents)

Akira Nakasuga (3 out of 34 patents)

Masahiro Toyoda (3 out of 10 patents)

4. Katsutoshi Nagaoka (3 out of 8 patents)

5. Yoshitaka Misaka (2 out of 10 patents)

6. Kazuhiro Kawasaki (2 out of 19 patents)

7. Yuji Gotoh (2 out of 2 patents)

8. Katsutoshi Sato (2 out of 7 patents)

9. Shoji Nozato (1 out of 22 patents)

10. Eisuke Takahashi (1 out of 40 patents)

11. Taichi Nakazawa (1 out of 20 patents)

12. Hiroji Fukui (1 out of 26 patents)

13. Hiromu Shiota (1 out of 8 patents)

14. Eiji Shimomura (1 out of 3 patents)

15. Yoichi Oi (1 out of 30 patents)

18 patents: Sort by Forward Citations

1. 12221349 - Exfoliated graphite and manufacturing method therefor (2025-02-11),

2. 12208374 - Catalyst composition and carbon material having nitrogen-containing group (2025-01-28),

3. 11907849 - Information processing system, endoscope system, information storage medium, and information processing method (2024-02-20),

4. 10658126 - Capacitor electrode material, method for producing same, and electric double layer capacitor (2020-05-19),

5. 10508709 - Vibration damping device and method for designing the same (2019-12-17),

6. 10458775 - Hardened layer depth measuring apparatus (2019-10-29),

7. 10284075 - Overvoltage protection circuit for protecting overvoltage corresponding to wide range of input voltage (2019-05-07),

8. 10192669 - Vector magnetic characteristic controlled material and iron core (2019-01-29),

9. 9962683 - Alloy microparticles and method for producing same, alloy microparticle cluster, catalyst, and method for producing same (2018-05-08),

10. 9960678 - Power converter with resonant circuit (2018-05-01),

11. 9919926 - Method for producing random-structure GIC, method for producing exfoliated graphite dispersion liquid, exfoliated graphite dispersion liquid, and exfoliated graphite (2018-03-20),

12. 9673465 - Catalyst, method for producing catalyst, and method for producing hydrogen-containing gas using catalyst, and hydrogen generating device, fuel cell system, and silicon-supported CeZr-based oxide (2017-06-06),

13. 9304108 - Quenching depth measurement method and quenching depth measurement apparatus (2016-04-05),

14. 9294076 - Switching power supply device and pulse width modulation circuit used therein (2016-03-22),

15. 9139489 - Method of manufacturing olefin having 2 to 4 carbon atoms by Fischer-Tropsch reaction (2015-09-22),

Company Overview

Oita University, located in Oita, Japan, is a prominent institution dedicated to higher education and research. The university specializes in a diverse range of fields, including engineering, health sciences, and environmental studies. It fosters innovation through interdisciplinary research and collaboration, aiming to address global challenges. Oita University is committed to advancing knowledge and technology, contributing to both local and international communities through its academic programs and research initiatives.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

18 Patents

#1 in Oita

#3,125 in Japan

#34,263 in the World

Oita University

Forward Citations = 15

60 inventors:

Kimihiro Nishijima (4 out of 6 patents)

Akira Nakasuga (3 out of 34 patents)

Masahiro Toyoda (3 out of 10 patents)

4. Katsutoshi Nagaoka (3 out of 8 patents)

5. Yoshitaka Misaka (2 out of 10 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Oita University. Retrieved from https://idiyas.com/company/oita-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]

Loading…