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For the Inventor, By the Inventor

Kitakyushu, Japan

Toto Ltd.


USPTO Granted Patents = 1,229

% Expired Patents = 9.7



Trademarks = 51

Forward Citations = 12,498

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1,141 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.  Hiroshi Hashimoto (35 out of 61 patents)

7.  Yuji Yoshioka (34 out of 34 patents)

8.  Yutaka Momiyama (32 out of 32 patents)

9.  Katsuhisa Tsuchiya (30 out of 30 patents)

10.  Minoru Sato (29 out of 29 patents)

11.  Makoto Hayakawa (29 out of 29 patents)

12.  Masafumi Ishikawa (29 out of 29 patents)

13.  Tsukasa Shigezumi (27 out of 27 patents)

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

15.  Toshiharu Ooe (25 out of 29 patents)


Core Competencies:
Flush Toilet
Toilet Device
Sanitary Washing Device
Urinal
Electrostatic Chuck
Defecation Recording System
Water Discharge Device
Remote Controller
Semiconductor Manufacturing
Nutrient Intake Estimation
Photography System
Mobile Toilet Vehicle

1,229 patents:

1. 12738460 - Semiconductor manufacturing apparatus (2026-09-15),
2. 12736140 - Hot water and cold water mixing apparatus (2026-09-15),
3. 12735884 - Flush toilet (2026-09-15),
4. 12729124 - Composite structure and semiconductor manufacturing apparatus including composite structure (2026-09-08),
5. D1145984 - Urinal (2026-09-01),
6. D1145788 - Display screen or portion thereof with graphical user interface (2026-09-01),
7. 12724861 - Toilet device, method for controlling toilet device, and control program of toilet device (2026-09-01),
8. 12697691 - Electrostatic chuck (2026-08-04),
9. 12689007 - Structural member (2026-07-21),
10. 12686030 - Structural member and method for producing the same (2026-07-21),
11. 12680286 - Toilet device, method for controlling a toilet device, and control program of a toilet device (2026-07-14),
12. 12668963 - Toilet device (2026-06-30),
13. D1131508 - Display screen or portion thereof with graphical user interface (2026-06-23),
14. 12644266 - Flush toilet device (2026-06-02),
15. 12624539 - Wall-mounted flush toilet (2026-05-12),
Toto Ltd., headquartered in Kitakyushu, Japan, is a leading innovator in toilet technology and sanitary solutions. The company specializes in the development and manufacturing of advanced toilet devices, including flush toilets, urinals, and sanitary washing devices. Toto is recognized for its commitment to enhancing user experience through technologies such as electrostatic chucks and defecation recording systems. With a focus on water discharge devices and remote control functionalities, Toto continues to set industry standards in hygiene and convenience.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Toto Ltd.
1,229 Patents

#1 in Kitakyushu

#192 in Japan

#828 in the World

Kitakyushu, JP
Kitakyushu, Japan

Toto Ltd.

Forward Citations = 12,498

1,141 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)

Please report any incorrect information to [email protected]
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