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For the Inventor, By the Inventor

Kitakyushu, Japan

Toto Ltd.


USPTO Granted Patents = 1,192



Trademarks = 58

Forward Citations = 12,097

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1,110 inventors (with patents filed for the assignee):

goldMedal Minoru Tani (76 out of 76 patents)

silverMedal Hajime Kakihana (51 out of 51 patents)

bronzeMedal Mitsuya Obara (47 out of 47 patents)

4.  Seijiro Kawamura (42 out of 42 patents)

5.  Shu Kashirajima (40 out of 40 patents)

6.  Yuji Yoshioka (32 out of 32 patents)

7.  Yutaka Momiyama (30 out of 30 patents)

8.  Hiroshi Hashimoto (30 out of 56 patents)

9.  Katsuhisa Tsuchiya (30 out of 30 patents)

10.  Makoto Hayakawa (29 out of 29 patents)

11.  Masafumi Ishikawa (29 out of 29 patents)

12.  Tsukasa Shigezumi (27 out of 27 patents)

13.  Lea Mari Mendoza (27 out of 27 patents)

14.  Minoru Sato (26 out of 26 patents)

15.  Toshiharu Ooe (25 out of 29 patents)


Core Competencies:
Abnormality Detection
Flush Toilet Apparatus
Sanitary Washing Device
Electrostatic Chuck
Excrement Judgement System
Nutrient Intake Estimation
Toilet Seat Technology
Bathtub Apparatus
Water Spouting Apparatus
Photography System
Semiconductor Manufacturing
Hypochlorous Acid Generating Electrode

1,192 patents:

1. 12497771 - Flush toilet (2025-12-16),
2. 12497769 - Flush toilet apparatus (2025-12-16),
3. 12484742 - Abnormality detection system (2025-12-02),
4. 12473729 - Flush toilet apparatus (2025-11-18),
5. 12421708 - Flush toilet (2025-09-23),
6. 12416142 - Discharge valve device, flush water tank device, and flush toilet (2025-09-16),
7. D1092696 - Shower handle (2025-09-09),
8. 12410599 - Flush toilet (2025-09-09),
9. D1091775 - Shower handle (2025-09-02),
10. 12404667 - Sanitary washing device (2025-09-02),
11. D1089575 - Toilet seat (2025-08-19),
12. D1089574 - Toilet seat (2025-08-19),
13. 12395101 - Electrostatic chuck (2025-08-19),
14. D1088199 - Toilet seat (2025-08-12),
15. D1088198 - Toilet seat (2025-08-12),
TOTO LTD. is a global leader in manufacturing high-quality bathroom fixtures and plumbing products. With a focus on innovative design, superior technology, and sustainable solutions, TOTO has been a trusted brand for over 100 years. Their extensive product line includes toilets, faucets, showers, bathtubs, and more. TOTO is committed to creating products that enhance people's lives while minimizing their environmental impact. For more information, please visit their official website.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 23 2025

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1,192 Patents

#1 in Kitakyushu

#188 in Japan

#828 in the World

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Kitakyushu, Japan

Toto Ltd.

Forward Citations = 12,097

1,110 inventors:

goldMedal Minoru Tani (76 out of 76 patents)

silverMedal Hajime Kakihana (51 out of 51 patents)

bronzeMedal Mitsuya Obara (47 out of 47 patents)

4.  Seijiro Kawamura (42 out of 42 patents)

5.  Shu Kashirajima (40 out of 40 patents)

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