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For the Inventor, By the Inventor

Yamagata, Japan

Yamagata University

Calculating rank
USPTO Granted Patents = 60

% Expired Patents = 25.0



Forward Citations = 68

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128 inventors (with patents filed for the assignee):

goldMedal Masaru Tanaka (14 out of 17 patents)

silverMedal Yasuhisa Minagawa (10 out of 63 patents)

bronzeMedal Shizuo Tokito (8 out of 12 patents)

4.  Takashi Hoshiba (8 out of 9 patents)

5.  Daisuke Kumaki (7 out of 9 patents)

6.  Daisuke Yokoyama (7 out of 7 patents)

7.  Tomokazu Shibuya (6 out of 6 patents)

8.  Takefumi Abe (6 out of 11 patents)

9.  Yasuhiro Kuwana (6 out of 7 patents)

10.  Masato Kurihara (5 out of 9 patents)

11.  Shigeki Hattori (4 out of 6 patents)

12.  Kaori Tsuruoka (4 out of 12 patents)

13.  Haruka Emura (4 out of 4 patents)

14.  Takayuki Chiba (3 out of 3 patents)

15.  Yong-Jin Pu (3 out of 5 patents)


Core Competencies:
Organic Photoelectronic Element
Silver Nanoparticles
Medical Analysis Device
Cancer Cell Capture
Conductive Resin
Polycarbonate Resin
Zwitterionic Polymer
Piezoelectric Sensor
Thin Film Transistor
Electroluminescent Device
Liquid Crystal Display
Ferroelectric Polymer

60 patents:

1. 12234339 - Conductive resin, manufacturing method for the same, and sensor (2025-02-25),
2. 12233540 - Differential mechanism (2025-02-25),
3. 12207898 - Evaluation test apparatus (2025-01-28),
4. 12145876 - Transparent conductive film-attached glass sheet, transparent conductive film-attached glass roll, and manufacturing method therefor (2024-11-19),
5. 11912878 - Method of producing organic-inorganic hybrid infrared absorbing particles and organic-inorganic hybrid infrared absorbing particles (2024-02-27),
6. 11891509 - Polycarbonate resin composition, method for producing the same, masterbatch pellet, and molded body (2024-02-06),
7. 11660596 - Medical analysis device and cell analysis method (2023-05-30),
8. 11614440 - Specific cell fractionating and capturing methods (2023-03-28),
9. 11573232 - Method for capturing specific cells (2023-02-07),
10. 11469377 - Composition, organic photoelectronic element, and production methods therefor (2022-10-11),
11. 11437596 - Organic photoelectronic element having hole transport layer containing fluorinated polymer and organic semiconductor material (2022-09-06),
12. 11389115 - Piezoelectric sensor (2022-07-19),
13. 11360078 - Medical analysis device and cell analysis method (2022-06-14),
14. 11355734 - Organic photoelectronic element comprising fluorinated polymer (2022-06-07),
15. 11248222 - Method for controlling enzyme productivity of microorganisms (2022-02-15),
Company Overview
Yamagata University, located in Yamagata, Japan, is a prominent institution engaged in advanced research and development in the field of organic electronics. The university specializes in innovative technologies such as organic photoelectronic elements and silver nanoparticles, contributing to various applications including medical analysis devices and cancer cell capture technologies. Its research also encompasses conductive and polycarbonate resins, zwitterionic polymers, and piezoelectric sensors, positioning it at the forefront of material science and engineering.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

Yamagata University USPTO Patent Assignee Logo
60 Patents

#2 in Yamagata

#1,534 in Japan

#12,094 in the World

Yamagata, JP
Yamagata, Japan

Yamagata University

Forward Citations = 68

128 inventors:

goldMedal Masaru Tanaka (14 out of 17 patents)

silverMedal Yasuhisa Minagawa (10 out of 63 patents)

bronzeMedal Shizuo Tokito (8 out of 12 patents)

4.  Takashi Hoshiba (8 out of 9 patents)

5.  Daisuke Kumaki (7 out of 9 patents)

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