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Kagawa University

USPTO Granted Patents = 62

% Expired Patents = 19.4

EPO Patents = 3

Forward Citations = 119

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119 inventors (with patents filed for the assignee):

Ken Izumori (16 out of 32 patents)

Ichiro Ishimaru (15 out of 16 patents)

Masaaki Tokuda (13 out of 18 patents)

4. Osamu Matsushita (10 out of 18 patents)

5. Joshua Sakon (9 out of 16 patents)

6. Robert C Gensure (9 out of 11 patents)

7. Tulasi Ponnapakkam (8 out of 10 patents)

8. Kazuhiro Okuma (5 out of 7 patents)

9. Nozomu Nishi (5 out of 7 patents)

10. Hidekuni Takao (5 out of 5 patents)

11. Fusao Shimokawa (4 out of 4 patents)

12. Tetsuo Iida (4 out of 5 patents)

13. Kazuya Akimitsu (4 out of 5 patents)

14. Keiji Tsusaki (4 out of 31 patents)

15. Toshiaki Ohara (3 out of 14 patents)

Core Competencies:

Spectrometry Device

Optical Measuring Apparatus

Vascular Sap Measurement Sensor

Therapeutic Agents

Plant Disease Control

Fusion Proteins

Microparticle Measurement

Rare Sugars

Activity Enhancer

Biliary Tract Drainage Tube

Driver Fatigue Assessment

Gene Sequence

62 patents: Sort by Forward Citations

1. 12235157 - Spectrometry device (2025-02-25),

2. 12216076 - Vascular sap measurement sensor (2025-02-04),

3. 12158417 - Spectrometry device (2024-12-03),

4. 12133721 - Pulse-wave signal analysis device, pulse-wave signal analysis method and computer program (2024-11-05),

5. 12102430 - Spectral measurement device and spectral measurement method (2024-10-01),

6. 11815411 - Tactile sensor to quantify hairy skin sensation (2023-11-14),

7. 11653685 - D-psicose-containing sweetener and foods and drinks and the like obtained by using same (2023-05-23),

8. 11516562 - Core selective switch and optical node device (2022-11-29),

9. 11402270 - Spectral measurement device and spectral measurement method (2022-08-02),

10. 11324763 - Malaria transmission prevention agent having rare sugar as effective component thereof and malarial parasite growth regulating agent (2022-05-10),

11. 11279922 - Delivery of therapeutic agents by a collagen binding protein (2022-03-22),

12. 11278564 - Brain function-improving agent, food, and medicine using lipopolysaccharide (2022-03-22),

13. 11231272 - Optical measuring apparatus and optical measuring method (2022-01-25),

14. 11039576 - Vascular sap measurement sensor and method of manufacturing vascular sap measurement sensor (2021-06-22),

15. 11035782 - Optical characteristic measuring device and optical characteristic measuring method (2021-06-15),

Company Overview

Kagawa University, located in Kagawa, Japan, is a prominent institution engaged in advanced research and development in the field of spectroscopic measurement. The university specializes in various core technologies, including spectrometry devices and optical measuring apparatuses. Its research extends to innovative applications such as vascular sap measurement sensors, therapeutic agents, and plant disease control. Additionally, Kagawa University explores the realms of fusion proteins and microparticle measurement, contributing significantly to both scientific knowledge and practical solutions in agriculture and health.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

62 Patents

#4 in Kagawa

#1,500 in Japan

#11,779 in the World

Kagawa University

Forward Citations = 119

119 inventors:

Ken Izumori (16 out of 32 patents)

Ichiro Ishimaru (15 out of 16 patents)

Masaaki Tokuda (13 out of 18 patents)

4. Osamu Matsushita (10 out of 18 patents)

5. Joshua Sakon (9 out of 16 patents)

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