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Sunstar Inc.

USPTO Granted Patents = 58

% Expired Patents = 8.6

CIPO Patents = 8

EPO Patents = 43

Trademarks = 8

Forward Citations = 763

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129 inventors (with patents filed for the assignee):

Masahiro Nishiura (7 out of 8 patents)

Keisuke Kato (4 out of 12 patents)

Yukinori Wada (4 out of 5 patents)

4. Naoki Tsurukawa (4 out of 4 patents)

5. Motonobu Matsumoto (4 out of 4 patents)

6. Shinya Sakurai (3 out of 6 patents)

7. Takashi Kusakari (3 out of 3 patents)

8. Mayumi Kotani (3 out of 3 patents)

9. Akihito Fujita (3 out of 5 patents)

10. Yasuhiro Kawai (2 out of 2 patents)

11. Hidekuni Takano (2 out of 3 patents)

12. Youko Sono (2 out of 2 patents)

13. Makoto Suwa (2 out of 2 patents)

14. Yasumitsu Shimizu (2 out of 2 patents)

15. Tsukasa Mitsui (2 out of 2 patents)

Core Competencies:

Electric Toothbrush

Interdental Cleaning Tool

Oral Composition

Toothbrush Module

Brushing Assistance System

Bactericidal Agent

Denture Fixative

Anti-Obesity Composition

Tripeptides

Health Support Method

Oral Preparation

Skin-Whitening Cosmetic

58 patents: Sort by Forward Citations

1. 12697288 - Composition for oral cavity (2026-08-04),

2. 12495890 - Molded article for oral care product and oral care product (2025-12-16),

3. 12495888 - Interdental cleaning tool (2025-12-16),

4. 11478342 - Electric toothbrush (2022-10-25),

5. 11426351 - Process for producing a pharmaceutical composition containing micro particles (2022-08-30),

6. 10925387 - Toothbrush module, attachment for toothbrush, brushing assistance system, brushing evaluation system, brushing assistance device, and brushing assistance program (2021-02-23),

7. 10676505 - Tripeptides having angiotensin converting enzyme inhibitory activity and uses thereof (2020-06-09),

8. 10603332 - Anti-obesity composition (2020-03-31),

9. 10335441 - Oral composition containing bifidobacteria and cruciferous vegetable (2019-07-02),

10. 10314676 - Oral cleaning device (2019-06-11),

11. 10098434 - Sprayer (2018-10-16),

12. 10020719 - Linear actuator (2018-07-10),

13. 9801917 - Composition for improving blood sugar metabolism (2017-10-31),

14. 9737634 - Non-woven fabric containing bone prosthetic material (2017-08-22),

15. 9700556 - Method for producing indigo-plant leaf extract (2017-07-11),

Sunstar Inc., headquartered in Osaka, Japan, specializes in the development and manufacturing of oral care products. The company is recognized for its innovative technologies in electric toothbrushes, interdental cleaning tools, and oral compositions. Sunstar's research focuses on enhancing oral hygiene through advanced brushing assistance systems and bactericidal agents, as well as providing solutions for denture fixation and anti-obesity compositions. With a commitment to improving health and well-being, Sunstar continues to lead in oral care innovation.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

58 Patents

#171 in Osaka

#1,572 in Japan

#12,371 in the World

Sunstar Inc.

Forward Citations = 763

129 inventors:

Masahiro Nishiura (7 out of 8 patents)

Keisuke Kato (4 out of 12 patents)

Yukinori Wada (4 out of 5 patents)

4. Naoki Tsurukawa (4 out of 4 patents)

5. Motonobu Matsumoto (4 out of 4 patents)

Please report any incorrect information to [email protected]

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