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Kikkoman Corporation

USPTO Granted Patents = 244

% Expired Patents = 8.6

EPO Patents = 63

Trademarks = 53

Forward Citations = 1,459

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336 inventors (with patents filed for the assignee):

Atsushi Ichiyanagi (22 out of 22 patents)

Naoki Kajiyama (20 out of 20 patents)

Denmi Kuwagaki (17 out of 17 patents)

4. Yosuke Masakari (16 out of 16 patents)

5. Nobuyuki Yamaji (16 out of 17 patents)

6. Yasuji Koyama (15 out of 19 patents)

7. Kozo Hirokawa (14 out of 14 patents)

8. Masaru Matsuura (13 out of 14 patents)

9. Eiichi Nakano (12 out of 17 patents)

10. Keiko Kurosawa (10 out of 10 patents)

11. Takeharu Nakahara (10 out of 10 patents)

12. Seiichi Hara (9 out of 10 patents)

13. Masashi Fukumoto (9 out of 9 patents)

14. Seiji Murakami (9 out of 10 patents)

15. Akio Obata (9 out of 10 patents)

Core Competencies:

Glucose Measurement

Virus-Resistant Plants

Soy Sauce Production

Amadoriase

Fermentation

Selenoneine

Food Seasoning

Measurement Kit

Ethanolamine Phosphate

Transformed Fungus

Histamine Measurement

Container Design

244 patents: Sort by Forward Citations

1. 12723272 - NOVEL MEDIATOR (2026-09-01),

2. 12677859 - Powdered soy sauce and production method thereof (2026-07-14),

3. 12635704 - Method for manufacturing cheese-like fermented food, and cheese-like fermented food (2026-05-26),

4. 12622449 - Method for producing sweetener (2026-05-12),

5. 12618080 - SOLANACEOUS PLANT AND SOLANACEOUS PLANT CELL HAVING RESISTANCE TO TOMATO SPOTTED WILT VIRUS, AND METHOD FOR PRODUCING SOLANACEOUS PLANT (2026-05-05),

6. 12571758 - GLUCOSE REDOX REACTION AND COMPOSITION FOR GLUCOSE MEASUREMENT USING FLAVIN COMPOUND (2026-03-10),

7. 12565672 - Sampling method and kit for histamine measurement (2026-03-03),

8. 12511336 - Food information presentation system, food information presentation method, food information presentation device, food information presentation program, and storage medium on which program is recorded (2025-12-30),

9. 12492409 - SOLANACEOUS PLANT RESISTANT TO VIRUS OF GENUS BEGOMOVIRUS CAUSING TOMATO YELLOW LEAF CURL SYMPTOMS, SOLANACEOUS PLANT CELL, AND METHOD FOR PRODUCING SOLANACEOUS PLANT (2025-12-09),

10. 12398411 - Method for producing selenoneine (2025-08-26),

11. 12258589 - Glycated hemoglobin oxidase variant and method for measurement (2025-03-25),

12. 12234466 - microorganism carrying disruptions of multiple genes and a method of producing thereof (2025-02-25),

13. 11932880 - Enzyme and method for assaying pentosidine using same (2024-03-19),

14. 11932860 - Method for producing alkaline phosphatase, alkaline phosphatase obtained using said method, and vector and transformant for production thereof (2024-03-19),

15. 11879149 - Quantification method of ethanolamine phosphate, oxidoreductase for quantification, composition for quantification, kit for quantification and sensor for quantification (2024-01-23),

Kikkoman Corporation, headquartered in Chiba, Japan, is a leading player in the food technology sector, renowned for its expertise in soy sauce production and food seasoning. The company specializes in various core technologies, including fermentation processes and glucose measurement, contributing to advancements in food safety and quality. Kikkoman is also engaged in innovative research areas such as virus-resistant plants and the development of measurement kits, reflecting its commitment to enhancing food technology and sustainability.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

Kikkoman Corporation

244 Patents

#5 in Chiba

#620 in Japan

#3,545 in the World

Kikkoman Corporation

Forward Citations = 1,459

336 inventors:

Atsushi Ichiyanagi (22 out of 22 patents)

Naoki Kajiyama (20 out of 20 patents)

Denmi Kuwagaki (17 out of 17 patents)

4. Yosuke Masakari (16 out of 16 patents)

5. Nobuyuki Yamaji (16 out of 17 patents)

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